CAREL GDSBI20C00 Gas Leakage Detector User Manual
- July 25, 2024
- Carel
Table of Contents
CAREL GDSBI20C00 Gas Leakage Detector
Product Description
The Gas Leakage Detector is designed for commercial and industrial applications to continuously monitor indoor air for refrigerant leaks. It belongs to the GLD Small series and is suitable for use in refrigeration applications such as cold rooms, freezer rooms, and equipment rooms.
Specifications
- Product: Gas Leakage Detector
- Applications: Commercial and industrial
- Model: +0300047IE
- Version: 1.1 – 26.04.2023
Product Usage Instructions
1. Installation:
Follow these steps for proper installation:
- General Information: Familiarize yourself with the product components and specifications.
- Installation Tips: Ensure proper placement and connection of the detector.
- Additional Installation Notes: Pay attention to specific installation requirements mentioned in the manual.
2. Operation:
Understanding how the detector operates is crucial. Refer to the manual for details on sensor operating principles, gas detected, and relay operations.
3. Maintenance:
Regular maintenance is essential for optimal performance. Follow the maintenance instructions provided in the manual.
4. Further Information:
For more in-depth knowledge about the product, refer to sections detailing sensor operating principles, detected gases, and mounting templates.
FAQs
Q: What should I do if the detector indicates a refrigerant leak?
A: If the detector triggers an alarm for a refrigerant leak, follow these steps:
- Evacuate the area immediately.
- Identify the source of the leak if possible.
- Contact a qualified technician to repair the leak and reset the
detector.
Q: How often should I calibrate the detector?
A: It is recommended to calibrate the detector annually or as per the manufacturer’s guidelines to ensure accurate detection of leaks.
Gas Leakage Detector
Per applicazioni commerciali e industriali For commercial and industrial
applications
MANUALE D’USO USER MANUAL
NO POWER & SIGNAL CABLES TOGETHER
READ CAREFULLY IN THE TEXT!
Gas Leakage Detector +0300047IE – ITA/ENG Up to date version available on
www.carel.com
GENERAL WARNINGS
DISPOSAL
ENG
CAREL bases the development of its products on decades of experience in HVAC,
on continuous investments in technological innovations to products, procedures
and strict quality processes with in-circuit and functional testing on 100% of
its products, and on the most innovative production technology available on
the market. CAREL and its subsidiaries/affiliates nonetheless cannot guarantee
that all the aspects of the product and the software included with the product
respond to the requirements of the final application, despite the product
being developed according to startof-the-art techniques. The customer
(manufacturer, developer or installer of the final equipment) accepts all
liability and risk relating to the configuration of the product in order to
reach the expected results in relation to the specific final installation
and/or equipment. CAREL may, based on specific agreements, act as a consultant
for the successful commissioning of the final unit/application, however in no
case does it accept liability for the correct operation of the final
equipment/system. The CAREL product is a state-of-the-art product, whose
operation is specified in the technical documentation supplied with the
product or can be downloaded, even prior to purchase, from the website
www.carel.com. Each CAREL product, in relation to its advanced level of
technology, requires setup/configuration/programming/commissioning to be able
to operate in the best possible way for the specific application. Failure to
complete such operations, which are required/indicated in the user manual, may
cause the final product to malfunction; CAREL accepts no liability in such
cases. Only qualified personnel may install or carry out technical service on
the product. The customer must only use the product in the manner described in
the documentation relating to the product. In addition to observing any
further warnings described in this manual, the following warnings must be
heeded for all CAREL products:
· prevent the electronic circuits from getting wet. Rain, humidity and all
types of liquids or condensate contain corrosive minerals that may damage the
electronic circuits. any case, the product should be used or stored in
environments that comply with the temperature and humidity limits specified in
the manual;
· do not install the device in particularly hot environments. Too high
temperatures may reduce the life of electronic devices, damage them and deform
or melt the plastic parts. In any case, the product should be used or stored
in environments that comply with the temperature and humidity limits specified
in the manual;
· do not attempt to open the device in any way other than described in the
manual.
· do not drop, hit or shake the device, as the internal circuits and
mechanisms may be irreparably damaged;
· do not use corrosive chemicals, solvents or aggressive detergents to clean
the device;
· do not use the product for applications other than those specified in the
technical manual.
All of the above suggestions likewise apply to the controllers, serial cards,
programming keys or any other accessory in the CAREL product portfolio. CAREL
adopts a policy of continual development. Consequently, CAREL reserves the
right to make changes and improvements to any product described in this
document without prior warning. The technical specifications shown in the
manual may be changed without prior warning. The liability of CAREL in
relation to its products is specified in the CAREL general contract
conditions, available on the website www.carel.com and/or by specific
agreements with customers; specifically, to the extent where allowed by
applicable legislation, in no case will CAREL, its employees or
subsidiaries/affiliates be liable for any lost earnings or sales, losses of
data and information, costs of replacement goods or services, damage to things
or people, downtime or any direct, indirect, incidental, actual, punitive,
exemplary, special or consequential damage of any kind whatsoever, whether
contractual, extra-contractual or due to negligence, or any other liabilities
deriving from the installation, use or impossibility to use the product, even
if CAREL or its subsidiaries/affiliates are warned of the possibility of such
damage.
Fig. 1
Fig. 2
INFORMATION FOR USERS ON THE CORRECT HANDLING OF WASTE
ELECTRICAL AND ELECTRONIC EQUIPMENT (WEEE) The product is made up of metal
parts and plastic parts. In reference to European Union directive 2002/96/EC
issued on 27 January 2003 and related national legislation, please note that:
· WEEE cannot be disposed of as municipal waste and such waste must
be collected and disposed of separately; · the public or private waste
collection systems defined by local legisla-
tion must be used. In addition, the equipment can be returned to the
distributor at the end of its working life when buying new equipment; · the
equipment may contain hazardous substances: the improper use or incorrect
disposal of such may have negative effects on human health and on the
environment; · the symbol (crossed-out wheeled bin) shown on the product or on
the packaging and on the technical leaflet indicates that the equipment has
been introduced onto the market after 13 August 2005 and that it must be
disposed of separately; · in the event of illegal disposal of electrical and
electronic waste, the penalties are specified by local waste disposal
legislation. Warranty on materials: 2 years (from production date, excluding
consumables). Approval: the quality and safety of CAREL S.p.A. products are
guaranteed by the ISO 9001 certified design and production system.
NO POWER & SIGNAL CABLES TOGETHER READ CAREFULLY IN THE TEXT!
Separate as much as possible the probe and digital input cables from cables to
inductive loads and power cables, so as to avoid possible electromagnetic
disturbance. Never run power cables (including the electrical panel cables)
and signal cables in the same conduits.
Key to the symbols:
Caution: to bring critical issues to the attention of those using the product.
Notice: to focus attention on important topics; in particular the practical
application of the various product functions. Caution: this product is to be
integrated and/or incorporated into the final apparatus or equipment.
Verification of conformity to the laws and technical standards in force in the
country where the final apparatus or equipment will be operated is the
manufacturer’s responsibility. Before delivering the product, Carel has
already completed the checks and tests required by the relevant European
directives and harmonised standards, using a typical test setup, which however
cannot be considered as representing all possible conditions of the final
installation.
HACCP: IMPORTANT
Food Safety programs based on procedures such as HACCP and, more generally, certain national regulations, require that the devices used for food storage be periodically checked to ensure that measurement errors are within the limits allowed for the application used. Carel recommends users to follow, for example, the indications of the European standard “Temperature recorders and thermometers for the transport, storage and distribution of chilled, frozen, deep-frozen/quick-frozen food and ice cream – PERIODIC VERIFICATION”, EN 13486 – 2001 (or subsequent updates) or similar regulations and provisions in force in the country in question. Further information can be found in the manual regarding the technical characteristics, correct installation and configuration of the product.
Gas Leakage Detector +0300047IE rel 1.1 – 26.04.2023
Avvertenze 3
ENG
Gas Leakage Detector +0300047IE rel 1.1 – 26.04.2023
Indice 5
ENG
PRODUCT DESCRIPTIONS
1.1 Intended uses / Applications
The GLD Small series leakage detectors continuously monitor the indoor air for
any refrigerant leaks. The devices can be used for refrigeration applications
(cold rooms, freezer rooms, equipment rooms). Always check the refrigerant
type setting and the warning and alarm thresholds, as described later in this
manual.
The GLD series detectors are available in the following configurations:
· GDSB – Built-in version · GDSR – Remote version
They are calibrated to detect most refrigerants currently available on the
market. The sensitive elements are constructed using semiconductor (SC)
technology or infrared (IR) technology.
The GLD series detectors can be used in stand-alone applications or connecte
to Carel controllers or third-party devices. Communication with Carel
controllers uses an analogue output, or an RS485 Modbus® serial connection.
When a refrigerant leakage exceeding a certain concentration threshold is
detected, an alarm or warning status is activated, depending on the level of
concentration set, and the GLD responds as follows:
· The combination of LEDs that are on changes; · A dedicated internal relay
(SPDT) is activated; · The analogue output is controlled (in proportion to the
detected concentration); · The change in status is signalled via the RS485
Modbus® output and the RILEVA TE application.
Furthermore, the “RILEVA TE” app, available in both App Store and Play Store,
can be used to access the device. The GLD Small series detectors ensure
compliance with refrigeration safety standards (EN 378) through visual and
audible alarms to alert personnel in the event of a refrigerant leakage.
WARNING: semiconductor sensors detect the gas they have been calibrated for,
but are also sensitive to other types of gases, solvents, alcohol, or
substances containing ammonia, such as cleaning products, present in the
environment. This, in certain areas and applications, can lead to false alarms
when the substances described above are present. Nonetheless, although they do
not only detect the specific gas, they still give a reliable indication of the
concentration of the gas they have been calibrated for. WARNING: This device
is neither certified nor approved for operation in oxygen-enriched
atmospheres. Non-compliance can lead to EXPLOSION.
WARNING: This device has not been designed to guarantee intrinsic safety when
used in areas classified as hazardous (“Directive 2014/34/ EU ATEX” and “NFPA
70, Hazardous Location”). For operator safety, DO NOT use it in hazardous
locations (classified as such).
GLD Small is available in five main versions: · Infrared version for CO2 ·
Electrochemical version for ammonia · Semiconductor version for R32
refrigerant gas blends · Semiconductor version for HC refrigerant gases ·
Semiconductor version for HFC/HFO refrigerant gases
Gas Leakage Detector +0300047IE rel 1.1 – 26.04.2023
Product descriptions 7
ENG
1.1.1 Physical dimensions
Built-in version
Remote version
116
20
116
20
20
20
134
134
38
104
63
Ø4.5 45 18
49
8 Product descriptions
43
120
46.5
104
63
Ø4.5 45 18
120
25
49 16
25 35.5
78.5
Ø6 Ø11
Gas Leakage Detector +0300047IE rel 1.1 – 26.04.2023
ENG
INSTALLATION
WARNING: the gas detector must only be installed by qualified personnel. It is
recommended to read the manual completely in order to use the product
correctly.
2.1 General information
The performance and overall effectiveness of the system strictly depend on the
characteristics of the place where the gas detector is installed. It is
therefore necessary to scrupulously comply with and carefully analyse every
detail of the installation process, including (but not limited to) the
following aspects: · local, state and national regulations and standards
governing the installation of gas monitoring equipment; · electrical standards
governing the laying and connection of power and signal cables to gas
monitoring equipment; · all possible environmental conditions that the devices
will be exposed to; · the physical characteristics of the gas to be detected
(in particular, its specific weight); · the characteristics of the application
(e.g. possible leakages, movement of air, areas where gas may stagnate, high
pressure
areas, etc.); · the accessibility needed for routine maintenance and repairs;
· the types of equipment and accessories needed to manage the system; · any
limiting factors or regulations that may affect system performance or
installations.
IMPORTANT: the installation surfaces must not be exposed to continuous
vibrations so as to prevent damage to the connections and electronic devices.
2.2 Installation tips
CAUTION: THERE IS NO GENERAL RULE for establishing the appropriate number of
sensors and their location for each application. Therefore, the guidelines
described below are intended as support for installers, and not as rules in
their own right. CAREL accepts no liability for the installation of the gas
detectors.
2.2.1 Equipment rooms
In equipment rooms, the gas detectors can be installed as follows: · Position
the gas detectors near areas with a high concentration of refrigerant, such as
compressors, cylinders, storage tanks,
pipes and conduits. Avoid vibrating surfaces. · Position the gas detectors
near mechanical parts such as pressure reducers, valves, flanges, joints
(brazed or mechanical) and
pipes. In particular, above or below these in relation to the type of gas (see
below). · Position the gas detectors around the perimeter of the room, so as
to completely surround the equipment. · Position the gas detectors in all
enclosed areas (stairwells, pits, enclosed corners, etc.) where pockets of
stagnant gas may
form. · Position the gas detectors near ventilation air flows, both natural
and mechanical (if present). · Do not place the gas detectors too close to
areas with high-pressure gas, to allow this to spread in the space around the
gas
detector. Otherwise the device may not detect the refrigerant leak if the flow
of gas is too fast.
Ceiling
Recommended position
for the sensor
Recommended installation
for heavier-than-air gases
L
L
Recommended installation
for lighter-than-air gases
Floor
2.2.2 Cold rooms
In cold rooms, position the gas detectors near the return air flow from the
evaporator, ideally on a side wall, but not directly in front of the
evaporator.
Where there are several evaporators, it may be possible to use one gas
detector for every two evaporators, if their positioning allows.
Finally, position the gas detectors near mechanical parts or joints such as
valves, flanges and pipes, avoiding areas with high-pressure gas.
Gas Leakage Detector +0300047IE rel 1.1 – 26.04.2023
Installation 9
ENG
2.2.3 Chillers
Measuring leaks on outdoor chillers is generally more difficult, given the
highly-variable air flow. Generally, it is recommended to install the gas
detectors near the compressor, as this is the place where refrigerant leaks
are most likely to occur. In particular, check if it is possible to install
the gas detector inside the closed unit near the compressor, where gas is more
likely to stagnate. However, avoid vibrating surfaces or surfaces that are
difficult to access for maintenance. It is also recommended to install gas
detectors along the ventilation system, especially in the event of low or
variable air flow speeds.
2.2.4 Air conditioning – direct VRF/VRV systems
In air conditioned buildings, it is recommended to install at least one gas
detector in each room, identifying the areas of greatest risk, such as air
flows from ventilation systems and heating systems such as radiators. In these
spaces, the refrigerant gas is usually denser than air: consequently, the gas
detectors should be installed close to the floor. Also consider installing the
gas detector in ceilings or false ceilings, if not adequately sealed. Do not
install the gas detectors underneath mirrors/washbasins and inside bathrooms.
Do not install the gas detectors near sources of steam.
2.3 Installation
Once the optimal position to install the sensor has been chosen, it is
recommended to install the sensor (identifiable on the device by the red
colour) in a vertical position, with the sensitive element (red part) facing
downwards. The sensor can now be mounted on the wall, as follows: 1. Drill the
holes in the wall using the template (at the end of the manual) as a
reference. 2. Remove the two top and bottom plastic frames, as shown in the
figure 3. Fix the device using four screws, chosen according to the type of
installation and the type of wall, maximum diameter 4 mm.
4. Open the cover of the GLD, fit the cable glands and make the required electrical connections. The plug-in terminals can be removed from the device to facilitate wiring.
10 Installation
J6
W3 W2 W1
3B 2B
1BJ5
3A 2A
1AJ4
24 Vac/dc
R1 W4
J3
W5 B
A
W6 G0
W8 W7 J2 Sh
J7 G
J8 J1
Gas Leakage Detector +0300047IE rel 1.1 – 26.04.2023
ENG
5. Power the device on and complete the settings using the rotary switch, as
described in the following paragraphs, or using the app, ass described below.
6. Close the cover. Use the cable glands provided to pass through and connect
the cables to the terminals, as shown in the figure and in the connection
table below. The terminals can be removed to simplify wiring.
J6
W3 W2 W1
3B
2B
1B J5
3A
2A
1A J4
24 Vac/dc + J3
R1 W4 W5 B
A
W6 G0 W8 W7 Sh J2
J7 G J1
- J8
Electrical connection
J1 +
Analogue output
G
Analogue output reference
J2 Sh
Shielded RS485 cable
G0
GND for RS485
A
Tx + / Rx + for RS485
B
Tx- / Rx- for RS485
J3 +24 Vac/dc For Vac power supply, connect the second transformer wire
+24 Vac/dc For Vdc power supply, connect one of the two power wires, the device automatically recognises whether this is + or GND.
For Vac power supply, connect one of the two transformer wires.
J4 1A
NO contact for warning/fault relay
2A
Common for warning/fault relay
3A
NC contact for warning/fault relay
J5 1B
NO contact for a alarm relay
2B
Common for alarm relay
3B
NC contact for alarm relay
J6 +
V+ for the output voltage provided for service
G
Service voltage reference
J7 /
Built-in version sensor connector
J8 /
Remote version sensor connector (connection not to be used for built-in products)
7. Secure the detector cover with the four screws. 8. Reposition the
previously removed plastic frames. 9. Power the device on and set the
parameters using the “RILEVA TE” app (see the relevant chapter) if the
settings were not
previously made using the rotary switch.
2.4 Additional installation notes
Before commencing electrical installation and wiring, carefully read the
following notes. · Power must be supplied by a safety isolation transformer
(Class 2) with no earth connection on the secondary winding. · The cable for
the relays must be sized and fitted with fuses based on the rated voltages,
currents and environmental conditions. · If stranded wires are used, it is
recommended to use an end terminal · To comply with RFI immunity regulations,
the communication cable shield on BOSS, mini-BOSS or other supervisors must be
earthed (e.g. to the chassis, earth bar, etc.) · Complete all wiring before
powering on.
Gas Leakage Detector +0300047IE rel 1.1 – 26.04.2023
Installation 11
ENG
OPERATION
3.1 Power on
When power is connected, the device begins the start-up cycle, divided into
two phases: · start-up · warm-up
The start-up sequence lasts around 20 seconds, during which the main functions
of the gas detector are initialised and verified. In this phase, the LEDs on
the front panel are activated in sequence, and the device cannot yet be used.
At the end of the start-up sequence, the warm-up phase commences, during which
the sensor output signal is adjusted and stabilised. In this phase, the device
can be used to detect gas and installation can be completed via the rotary
switch, app or supervisor; nonetheless, the measurement is less reliable and
calibration is not possible.
During the warm-up phase, the green LED flashes around twice every second. The
duration of the warm-up phase depends on the sensor technology used: ·
Semiconductor = 5 min · Electrochemical = 5 min · Infrared = 2 min
The sensors may take longer to warm up than specified; in these cases, do not
take any action, wait for the device to stabilise. The time required for
complete stabilisation of the device may vary depending on the type of gas and
installation.
3.2 Device operating states
The CAREL GLD series gas detectors provide visual indications of their current
operating status, in addition to the relay outputs. Visual indication of
device operating status is provided by three LEDs (green/red/orange).
Device status and the corresponding outputs are shown in the following table:
Relay Warning Fault mode not enabled
Status
LED
Warning/Fault relay
Alarm relay
Warm-up Normal Bluetooth Serial connected Warning delay active Alarm delay active Warning Alarm Fault
Internal LED W8 on steady
OFF
OFF
OFF
OFF
OFF
OFF
—
—
OFF
OFF
ON
OFF
ON
OFF
ON
ON
ON
ON
Tab. 3.a
If relay failsafe mode is active, the relay activation logic is reversed.
Device status and corresponding outputs, relay Relay Warning Fault mode enabled
Status
LED
Warning/Fault relay
Warm-up Normal Bluetooth Serial connected Warning delay active Alarm delay active Warning Alarm Fault
OFF
OFF
OFF
Internal LED W8 on steady
—
OFF
ON
OFF
OFF
ON
Alarm relay
OFF OFF OFF –OFF OFF OFF ON OFF
Tab. 3.b
Key:
= LED on steady = LED flashing
12 Operation
Gas Leakage Detector +0300047IE rel 1.1 – 26.04.2023
ENG
3.3 Setting the device using the rotary switch
The rotary switch is located inside the device, on the electronic board (R1).
J6
W3 W2 W1
3B
2B
1B J5
3A
2A
1A J4
24 Vac/dc + J3
R1 W4 W5 B
A
W6 G0 W8 W7 Sh J2
J7 G J1
- J8
Fig. 3.a
The basic configuration can be performed using the rotary switch, following
the instructions described below. To complete the configuration, a digital
multimeter is required, with the test leads connected to connector J6. In this
way, the tester will show a voltage between 0 and 10 Volts, indicating the
value selected by the rotary switch. The meaning of the voltage value
displayed changes depending on the selected function: the table below shows
the meaning of each voltage for each function.
Setting mode is activated by pressing and holding the rotary switch for 5
seconds. The LED that is ON acts as the menu point, indicating which
parameters will be set (all the other LEDs are OFF). Turn the switch to select
the parameter to be set. Reading the table, the voltage read with a voltmeter
connected to the service terminal indicates the chosen setting. Pressing the
rotary switch for 2 seconds accesses the selected parameter. The corresponding
LED flashes. Turning the rotary switch changes the parameter setting. After
having made the setting, pressing the rotary switch for 5 seconds saves the
new value. Turning the rotary switch again moves to the next parameter. After
two minutes of inactivity or using the magnetic latch, the detector returns to
normal operating mode.
Description of the rotary switch LEDs The table below shows the value of the selected parameter and the corresponding voltage value. Each LED corresponds to a different parameter. The default parameter values are saved to permanent memory.
LED W1 LED W2 LED W3 LED W4
LED W5
LED W6 LED W7 LED W8
Not used Warning level.
The operator can set the warning threshold.
See the table below for the voltage value corresponding to the selected
setting. Alarm level
The operator can set the alarm threshold.
See the table below for the voltage value corresponding to the selected
setting. Modbus address
The operator can set the Modbus address.
To set the values with greater precision, use the Modbus serial connection or
app.
See the table below for the voltage value corresponding to the selected
setting. Alarm delay
The operator can select the delay time for activation of the LED and the alarm
relay after the alarm threshold has
been exceeded.
See the table below for the voltage value corresponding to the selected
setting. Type of analogue output voltage.
The operator can select the type of analogue output.
See the table below for the voltage value corresponding to the selected
setting. Alarm/warning reset function mode
This parameter is used to select the warning and alarm reset modes.
0 = manual reset (latch) / 1 = automatic reset Modbus configuration
The operator can choose the desired Modbus configuration from the options
available.
See the table below for the voltage value corresponding to the selected
setting.
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Operation 13
ENG
Possible configurations of how to set the warning and alarm relay status in relation to operation of LED W7:
W=0
Manual reset
Manual reset
A=0
Warning
Alarm
W=1
Automatic reset
Manual reset
A=0
Warning
Alarm
W=0
Manual reset
Automatic reset
A=1
Warning
Alarm
W=1
Automatic reset
Automatic reset
A=1
Warning
Alarm
Conversion table voltage value j6 / selected function
W2/W3
W4
Service
wheel
Full
Full
Full
Full
LED
scale scale scale scale
1000 4000 10000 100
Voltage [PPM] [PPM] [PPM] [PPM] [–] [V]
0
0
0
0
0
0
0,1 10 100 100 1 1
0,2 20 200 200 2 2
0,3 30 300 300 3 3
0,4 40 400 400 4 4
0,5 50 500 500 5 5
0,6 60 600 600 6 6
0,7 70 700 700 7 7
0,8 80 800 800 8 8
0,9 90 900 900 9 9
1
100 1000 1000 10 10
1,1 110 1100 1100 11 11
1,2 120 1200 1200 12 12
1,3 130 1300 1300 13 13
1,4 140 1400 1400 14 14
1,5 150 1500 1500 15 15
1,6 160 1600 1600 16 16
1,7 170 1700 1700 17 17
1,8 180 1800 1800 18 18
1,9 190 1900 1900 19 19
2
200 2000 2000 20 20
2,1 210 2100 2100 21 21
2,2 220 2200 2200 22 22
2,3 230 2300 2300 23 23
2,4 240 2400 2400 24 24
2,5 250 2500 2500 25 25
2,6 260 2600 2600 26 26
2,7 270 2700 2700 27 27
2,8 280 2800 2800 28 28
2,9 290 2900 2900 29 29
3
300 3000 3000 30 30
3,1 310 3100 3100 31 31
3,2 320 3200 3200 32 32
3,3 330 3300 3300 33 33
3,4 340 3400 3400 34 34
3,5 350 3500 3500 35 35
3,6 360 3600 3600 36 36
3,7 370 3700 3700 37 37
3,8 380 3800 3800 38 38
3,9 390 3900 3900 39 39
4
400 4000 4000 40 40
4,1 410
4100 41 41
4,2 420
4200 42 42
4,3 430
4,4 440
4,5 450
4,6 460
4,7 470
4,8 480
4,9 490
5
500
5,1 510
5,2 520
5,3 530
4300 43 43 4400 44 44 4500 45 45 4600 46 46 4700 47 47 4800 48 48 4900 49 49 5000 50 50 5100 51 51 5200 52 52 5300 53 53
5,4 540
5400 54 54
5,5 550
5500 55 55
5,6 560
5600 56 56
5,7 570
5700 57 57
5,8 580
5800 58 58
5,9 590
5900 59 59
6
600
6000 60 60
6,1 610
6100 61 61
6,2 620
6200 62 62
6,3 630
6300 63 63
6,4 640 6,5 650
6400 64 64 6500 65 65
W5
W6
W7
W8
[m] [—] [—] [—]
0
1
2
3
4
5
6
7
8
9
10
9600 8N1
11
12
13
14
15
16
17
18
19
20 4-20 mA W=0 A=0 9600 8N2
19200 8N1
19200 8N2
1-5 V W=1 A=0
9600 8E1
14 Operation
Gas Leakage Detector +0300047IE rel 1.1 – 26.04.2023
W2/W3
W4 W5
W6
W7
W8
Service
wheel
Full
Full
Full
Full
LED
scale scale scale scale
1000 4000 10000 100
Voltage [PPM] [PPM] [PPM] [PPM] [–] [m] [—] [—] [—] [V]
6,6 660
6,7 670
6,8 680
6,9 690
7
700
7,1 710
7,2 720
7,3 730
7,4 740
6600 66 66 6700 67 67 6800 68 68 6900 69 69 7000 70 70 7100 71 71 7200 72 72 7300 73 73 7400 74 74
19200 8E1
7,5 750
7500 75 75
7,6 760
7600 76 76
7,7 770
7700 77 77
7,8 780
7800 78 78
7,9 790
7900 79 79
8
800
8000 80 80
2-10 V W=0 A=1 9600 8O1
8,1 810
8100 81 81
8,2 820
8200 82 82
8,3 830
8300 83 83
8,4 840
8400 84 84
8,5 850
8500 85 85
8,6 860
8,7 870
8,8 880
8,9 890
9
900
9,1 910
9,2 920
9,3 930
9,4 940
9,5 950
9,6 960
8600 86 86 8700 87 87 8800 88 88 8900 89 89 9000 90 90 9100 91 91 9200 92 92 9300 93 93 9400 94 94 9500 95 95 9600 96 96
19200 8O1
9,7 970
9700 97 97
9,8 980
9800 98 98
9,9 990
9900 99 99
10 1000
10000 100 100
0-10 V W=1 A=1
ENG
3.4 Analogue output
The CAREL GLD series gas detectors feature a single configurable analogue
output. During normal operation, the device’s analogue output signal is
proportional to the gas concentration measured, and can be selected from the
following options: · 1 to 5 V · 2 to 10 V · 0 to 10 V · 4 to 20 mA (default)
The CAREL GLD series gas detectors use different voltage/current values to indicate different operating modes. In normal operation, the gas concentration is indicated by the analogue output signal level. The relationship between output signal level and gas concentration is shown below:
Gas concentration
1-5 V
2-10 V
0-10 V
4-20 mA
0%
1 V
2 V
0 V
4 mA
50%
3 V
6 V
5 V
12 mA
100%
5 V
10 V
10 V 20 mA
3.5 Alarm management
The alarms are activated when the set thresholds are exceeded. The alarm
threshold value must always be greater than the warning value. The alarm and
warning thresholds must be less than or equal to the full scale range, and
must be greater than or equal to the allowed limit. The alarms are activated
when the set thresholds are exceeded.
Alarm set points
Sensor, gas and range
GLD group 1 and 2
GLD group 3
GLD GLD
group group
4, 5,
NCOH23
Minimum value
150 400 1000 15
Alarm default
500 800 5000 30
Warning default
150 400 1500 15
Maximum value
800 3000 8000 80
Unit of measure
ppm ppm ppm ppm
Gas Leakage Detector +0300047IE rel 1.1 – 26.04.2023
Operation 15
ENG
Soglia d’allarme
Soglia di warning
Delay
Delay
Valore in ppm
1
2
3
4
5
t
1
2
300 PreAlarmflag = 0 300 PreAlarmflag = 0 307 PreWarningFlag = 0 307 PreWarningFlag = 1
308 WarningFlag = 0 309 AlarmFlag = 0
308 WarningFlag = 0 309 AlarmFlag = 0
Yellow LED OFF
Yellow LED flashing
Red LED OFF Warning relay OFF Alarm relay OFF
Red LED OFF Warning relay OFF Alarm relay OFF
3
4
300 PreAlarmflag = 0 300 PreAlarmflag = 1 307 PreWarningFlag = 1 307 PreWarningFlag = 1
308 WarningFlag = 1 308 WarningFlag = 1
309 AlarmFlag = 0
309 AlarmFlag = 0
Yellow LED ON
Yellow LED ON
Red LED OFF Warning relay ON Alarm relay OFF
Red LED flashing Warning relay ON Alarm relay OFF
5
300 PreAlarmflag = 1 307 PreWarningFlag = 1 308 WarningFlag = 1 309 AlarmFlag
= 1
Yellow LED ON Red LED ON Warning relay ON Alarm relay ON
3.6 Magnetic key for configuration
The device is supplied with a magnet for configuration, located inside one of
the two plastic frames on the GLD. By placing it in the slot provided, the
following functions can be managed:
1
2
Bluetooth activation After 5 seconds of exposing the magnet to the magnetic
sensor, Bluetooth mode is activated. If if Bluetooth is already on, after 5
seconds of exposure Bluetooth is deactivated. Bluetooth mode is automatically
deactivated after 20 minutes of inactivity. Product operation in Bluetooth
mode is indicated by the rapid flashing of the green LED. Bluetooth Activation
set up the product on installation and maintenance operating mode, the alarms
if present are disabled, until the normal operating mode is restored,
deactivating bluetooth.
Alarm/warning management If a warning or alarm is active, after 2 seconds of
exposure, the alarm will be acknowledged and deactivated. If gas is still
present, the detector will enter alarm or warning mode as usual, after a 10
minute delay.
16 Operation
Gas Leakage Detector +0300047IE rel 1.1 – 26.04.2023
ENG
3.7
RILEVA TE app features
The”RILEVA TE”app lets users fully exploit the potential of the new Carel GLD
Small series gas detectors, allowing simple and intuitive interaction with the
gas detector. This simplifies configuration by using a smartphone to interface
with the CAREL GDS* gas leakage detectors.
The RILEVA TE app is available on the ANDROID store, and will soon also be available on the IOS store.
RILEVA TE can be used to perform the following functions: · Configuration:
modify alarm thresholds, configure Modbus settings, modify relay behaviour and
manage analogue output
settings · Maintenance: check correct functioning of the device · Calibration,
complete with calibration report · Display of current gas concentration
measurement and indication of alarm/fault status
3.7.1 Connecting the device via Bluetooth
Before connecting to the device via the RILEVA TE app, first make sure that
the BLUETOOTH connection and GEOLOCATION are enabled on the smartphone used.
Make sure that Bluetooth mode has been activated on the GLD small using the
magnetic latch, as described in the previous chapter.
It is recommended to wait for the end of the warm-up phase before activating
the Bluetooth connection. The Bluetooth connection should be established
during installation or maintenance. It is not recommended to use the app to
monitor the amount of gas measured in the environment. Activation via magnetic
latch is disabled if there are any active alarms/warnings and automatic reset
has been set. If manual reset mode has been selected, Bluetooth can be
activated, however the alarms are disabled during connection. The alarms are
in fact disabled when Bluetooth is active.
Open the RILEVA TE app (previously downloaded); the following screen is
displayed
Login screen Select:
· Operator, to continue displaying the gas detector variables and parameters.
· Technician, for password access and the possibility to set the parameters
and varia-
bles.
The password to unlock the device is 2222.
Gas Leakage Detector +0300047IE rel 1.1 – 26.04.2023
Operation 17
ENG
Bluetooth connection screen: If all the functions described above have been
enabled on the smartphone and the GLD is in Bluetooth mode, the available
devices are shown on the app screen. If this is not the case, touch the app
screen to refresh the display. Verify that the serial number on the label of
the device being connected matches the one displayed on the screen.
Select the correct device and verify correct connection. The Bluetooth symbol
at the top right changes from red to green.
Home screen: From the home screen, it is possible to display the current
concentration level measured by the sensor, with the corresponding alarm and
warning thresholds.
The following screens can also be accessed: · PARAMETERS · MODBUS SETUP · Test
· Calibration · More
PARAMETERS screen: This screen displays the sensor parameters.
It is also possible to select the type of gas to be detected, from those that
are compatible with the sensor; see the Other information chapter in this
manual for further details.
The following parameters can be displayed and modified if the user is logged
with Technician access · Warning threshold · Warning reset: manual or
automatic · Alarm threshold · Alarm reset: manual or automatic · Warning relay
setting with Fault · Type of analogue output · Alarm delay. · The specific gas
to be detected
18 Operation
Gas Leakage Detector +0300047IE rel 1.1 – 26.04.2023
ENG
Modbus setup screen: the following parameters can be set:
· Modbus address · Baud rate · Parity and stop bits.
Pressing SET DEFAULT sets the default parameters shown in the table in the
Modbus setup paragraph.
Test mode screen: If enabled, the following functions can be activated in test
mode, i.e. not corresponding to the behaviour of the device, rather for
debugging:
· Warning relay · Alarm relay · Green LED · Red LED · Yellow LED · Analogue
output.
More screen: this displays the app technical and legal information.
· App settings, change the unit of measure for the temperature displayed in
the app · Device Info, view information on the currently connected device ·
Create report: to make a copy of the most recent report generated · Change
logo, to replace the default logo that is shown on the calibration certificate
with a different one · EULA, to display the app’s legal information · Third
party license, see information on the third-party licenses used.
IMPORTANT: the Calibration screen is explained in detail in paragraph 6.2 CALIBRATION VIA APP. Gas Leakage Detector +0300047IE rel 1.1 – 26.04.2023
Operation 19
ENG
3.8 Modbus® network
For the Modbus RS485 network, use a shielded 3-wire cable. Recommended: Belden
3106A (or equivalent). The Modbus communication parameters can only be set
using the Rileva TE app or the rotary switch on the device’s electronic board.
Make sure that the network communication parameters are configured in the same
way, including on the supervisor. To ensure optimal operation of the serial
network, observe the following guidelines: · make sure that the devices are
configured with a single bus layout; connecting several buses in parallel, or
branching several
devices from the main bus may introduce incorrect combinations of signal
impedance, reflections and/or distortions. · Avoid using excessively long
connections when connecting devices to the serial bus. The device – bus
connection must not
exceed a maximum length of 1 metre. · Make sure that the polarity of the A (+,
Tx) / B (-, Rx) signal is maintained across the serial network. · Earth the
cable shield only on the main unit side. · Connect the cable shield to
terminal SH on the gas detector. · Make sure that the shield is intact across
the serial network. · Do not use the shield connection as a signal reference.
Use a cable that provides a dedicated wire for the signal reference.
Connect the signal reference to terminal GND on the gas detector. The CAREL
GLD series gas detectors feature a Modbus RTU digital interface. All of the
status messages and most of the parameters accessible and/or configurable via
the Bluetooth® interface are also accessible and/or configurable via a Carel
MODBUS controller.
Parameters for RS485 communication selectable via app or rotary switch
Parameter
Address
Baud rate Stop bits
Parity
Possible values
0 to 247 via app 0 to 100 via device
9600 or 19200 1 or 2
None, Even or Odd.
Default value
0
19200 2
None
IMPORTANT: Each device connected to the same RS485 bus must have its own address, otherwise there will be conflicts in transmission/reception that prevent serial communication.
IMPORTANT: The write registers are password-protected. By entering the
password in the appropriate register, authorisation to write the variables
will be provided for 15 minutes. There is a specific variable that indicates
whether or not the device is currently locked.
The password to unlock the device is 2222.
IMPORTANT: When using a CAREL BOSS family supervisor, it is recommended to enter the device unlock password at least once, so that all the devices can be displayed correctly. This is necessary when asterisks (***) are displayed in the parameters section instead of the value
20 Operation
Gas Leakage Detector +0300047IE rel 1.1 – 26.04.2023
ENG
3.9 Table of Modbus®variables
Address Register name
Short description
Function 04 Read Input Registers
Medium descrip-
Long
Max Min
tion
description
value value
Unit of Modbus Bit Modbus
meas.
pos.
length
101
Concentration Concentration ppm Sensor concentra- Sensor concentration 65535 0
0
16
tion in “units”
in “units”
102
Status_0
No ICM contact
No contact with No contact with the 1
0
0
1
the sensor module sensor module (ICM)
(ICM)
102
Status_1
No response from Sensor module
Sensor module (ICM) 1
0
1
1
the sensor
(ICM) signals no signals no contact
contact with the with the sensor
sensor
102
Status_4
Over range
Sensor over range Sensor over range 1
0
4
1
102
Status_5
Under range
Sensor under range Sensor under range 1
0
5
1
103
Range
Full scale
Sensor full scale Sensor full scale
65535 0
ppm 0
16
105
DaysOnline DaysOnline
Number of days Number of days 65535 0
day
0
16
online
online
106
ModbusAd- Modbus address Detector Modbus Detector Modbus 247 0
0
16
dress
address
address
107
SWVer
SWVer
Firmware version Firmware version 65535 0
0
16
108
MachineCode MachineCode
MachineCode
MachineCode
65535 0
0
16
113
HWVer
HWVer
Hardware version Hardware version 39321 0
0
16
114
SensorType Sensor type
Connected sensor Returns the part 999 0
0
16
P/N
number of the
currently connected
product.
See the Sensor type
table to identify the
part numbers of the
available products
115
Units
Units
Unit of measure Unit of measure 999 0
0
16
used to measure the
gas, currently only
expressed in ppm
116
AnalogOut- Analogue output Analogue output Analogue output val- 100 0
%
0
16
putValue
value
ue as a percentage
117
GasGroup Gas Group
Gas group listed in 1 R32 mixtures, 2 5
1
0
16
the table
HFC/HFO, 3 HC, 4
CO2, 5 NH3
118
DaysSinceSer- Days since service Days since last
Days since last
65535 0
day
0
16
vice
service performed service performed
119
MaxDaysOn- Max days online
Maximum number Maximum number of 65535 0
day
0
16
line
of days online
days online allowed
allowed for the for the sensor before
sensor
replacement is
required
120
MaxDaysToS- Max days to service Maximum days until Maximum days until 65535 0
day
0
16
ervice
next service
next service
Default value 0
365
Address Register
Function 06 Write Single Register & Function 16 Write Multiple Register
Short
Medium
Long description Max Min Unit of Modbus Bit Modbus
name
description
description
value value meas.
pos.
length
200 LimitAlarm Alarm limit
Alarm threshold
Alarm threshold
10000 0
ppm 0
16
201 Delay
Delay
Delay before alarm
Delay before alarm
20
0
min
0
16
activation
activation
203 LimitWarning Warning limit
Warning threshold
Warning threshold
10000 0
ppm 0
16
204 AnalogOut- Type of analogue Type of analogue
2 = 4-20mA ; 5 = 1-5V ; 8 10
2
0
16
putType
output
output signal
= 2-10V ; 10 = 0-10V
205 PassCode PassCode
Password to authorise Password to authorise 65535 0
0
16
the next command the next command
206 GasType (*) Type of gas
Gas type value
Gas type value
50
0
0
16
655 SpanConcen- SpanConcentration Span concentration for Span concentration for 10000 0
ppm 0
16
tration
calibration
calibration
Default value 0 2
0
Function 04 Read Input Registers
Address Register
Short
Medium
Long description
Max
name description
description
value
300
PreAlarmFlag Alarm flag Indicator of whether 1 = alarm threshold
1
the alarm threshold has exceeded
been exceeded
302
Fault
Fault
Fault indication
1 = fault. See register 102 to 1
identify the type of fault that
has occurred
303
W1LED
W1LED
W1 RED status LED
W1 RED status LED
1
304
W2LED
W2LED
W2 GREEN status LED W2 GREEN status LED
1
305
W3LED
W3LED
W3 YELLOW status LED W3 YELLOW status LED
1
307
PreWarning- PreWarning Indicator of whether the 1 = warning threshold
1
Flag
flag
warning threshold has exceeded
been exceeded
308
WarningFlag Warning relay Warning activation indi- 1 = Warning ON
1
cator including delay
309
AlarmFlag Alarm relay Alarm activation indica- 1 = Alarm on
1
tor including delay
310
BTStatus
BTStatus
Bluetooth status
1 = Bluetooth on
1
Min value 0
0
0 0 0 0
0 0 0
Unit of Modbus meas. Bit pos.
0
0
0 0 0 0
0 0 0
Modbus length 1
1
1 1 1 1
1 1 1
Default value 0
0
0 0 0 0
0 0 0
Gas Leakage Detector +0300047IE rel 1.1 – 26.04.2023
Operation 21
ENG
Address Register
Short
name description
311
SensorExpired Sensor
expired
312
DeviceUn- Device
locked
unlocked
Function 04 Read Input Registers
Medium
Long description
Max
description
value
Flag showing if the 1 = sensor to be replaced 1
sensor needs to be
replaced Indicator for authorisa- 1 = dispositivo unlocked 1
tion to modify variables
Min value 0
0
Unit of Modbus meas. Bit pos.
0
0
Modbus length 1
1
Default value 0
0
Function 05 Write Single Coil & Function 01 Read Coils
Address Register
Short
Medium
Long description
Max Min
name description
description
value value
401
ServiceDue Service
Maintenance indicator
1 = maintenance required 1
0
needed
(including calibration).
402
Acknowledge Acknowledge Manual reset for warning/ 1= manual warning/alarm 1
0
alarm
reset. The fault alarm cannot
be disabled
403
RelayFailSafe Relay FailSafe Relay in failsafe mode
1 = Relay in failsafe mode 1
0
404
RelayWF
Relay WF Warning relay used as fault 1 = Warning relay used as 1
0
fault
405
Acknowl- Acknowledge Manual/automatic warning 1 = automatic reset;
1
0
edgeWarning warning
acknowledgement setting 0 = manual reset
406
Acknowled- Acknowled- Manual/automatic alarm 1 = automatic reset;
1
0
geAlarm
geAlarm
acknowledgement setting 0 = manual reset
407
ZeroCalibra- Zero calibra- Start zero calibration
1 = start calibration
1
0
tion
tion
command
408
SpanCalibra- SpanCalibra- Start span calibration
1 = start span calibration 1
0
tion
tion
409
FactoryReset Reset
command Reset the detector to the
1 = restore factory
1
0
factory settings
settings
Unit of Modbus Modbus Default
meas. Bit pos. length value
0
1
0
0
1
0
0
1
0
0
1
0
0
1
0
0
1
1
0
1
1
0
1
0
0
1
0
Sensor type table
ID
Part number
Description
0
GDSBI20C00
Gas Detector Small R-744 (Co2) Infrared Wall Built-In
1
GDSBE19C00
Gas Detector Small R-717 (Ammonia) Electrochemical Wall Built-In
2
GDSBSMXC00
Gas Detector Small Group 1 Semiconductor Wall Built-In
3
GDSBSHFC00
Gas Detector Small Group 2 Semiconductor Wall Built-In
4
GDSBSHCC00
Gas Detector Small Group 3 Semiconductor Wall Built-In
5
GDSRI20C00
Gas Detector Small R-744 (Co2) Infrared Wall Remote
6
GDSRE19C00
Gas Detector Small R-717 (Ammonia) Electrochemical Wall Remote
7
GDSRSMXC00
Gas Detector Small Group 1 Semiconductor Wall Remote
8
GDSRSHFC00
Gas Detector Small Group 2 Semiconductor Wall Remote
9
GDSRSHCC00
Gas Detector Small Group 3 Semiconductor Wall Remote
10
GDOPZI2010SP Pre-Calibrated Sensor Module Small – R-744 (Co2) Infrared
11
GDOPZE1910SP Pre-Calibrated Sensor Module Small – R-717 (Ammonia) Electrochemical
12
GDOPZSMX10SP Pre-Calibrated Sensor Module Small – Group 1 Semiconductor
13
GDOPZSHF10SP Pre-Calibrated Sensor Module Small – Group 2 Semiconductor
14
GDOPZSHC10SP Pre-Calibrated Sensor Module Small – Group 3 Semiconductor
15
GDOPZT0000
Gas Detector – Calibration Kit For Small Edition
3.9.1 Meaning of the operating timers
· MaxDaysOnLine: This is the sensor operating time expressed in days. The
value depends on the sensor technology: semiconductor, infrared or
electrochemical.
· DaysOnLine: Number of days since the sensor was powered on. When the value
is greater than MaxDaysOnLine, the SensorExpired flag will be active.
· MaxDaysToService: Time expressed as a number of days after which calibration
is required. · DaysSinceService: Number of days since the sensor was powered
on following the last calibration. When the value is greater
than MaxDaysToService, the ServiceDue flag will be active.
22 Operation
Gas Leakage Detector +0300047IE rel 1.1 – 26.04.2023
ENG
MAINTENANCE
4.1 Calibration procedure
The calibration procedure is performed periodically and involves introducing a
known gas concentration at the sensor inlet, using the calibration kit. The
need to perform calibration is signalled by a specific variable on the
supervisor. Each type of device has a different calibration interval, as
described in the technical specifications table. After a few years of
operation, the sensor needs to be replaced, as described in the following
chapters, as the calibration is no longer sufficient to guarantee reliability
of the measurement performed. Calibration is performed by connecting the kit
described in the following chapter. It is also recommended to read the
chapters on calibration via app or supervisor before connecting the kit, so as
to choose the most suitable calibration method. For semiconductor versions
(group, 1, 2, 3), it is recommended to wait at least 48 hours between
exposures to the gas, to allow the sensor to reset and make a correct
measurement. The sensor should be exposed to the known gas concentration for a
limited time: recommended time 3 minutes, maximum 5 minutes.
IMPORTANT: the semiconductor versions are designed to detect different types
of gases, as described under “Further information”; however, the calibration
procedure does not use one of these gases, rather the default gas. The
complete table of gases to be used for each type of product is shown under
“Gases detected”. It is therefore recommended to only use the specific gas for
each group to perform the calibration procedure. The CO2 detectors do not
require periodic calibration, but simply replacement of the sensor after a
approximately 7 years. Calibration can be performed every 12 months if wanting
to guarantee greater accuracy of the measurement or if needing to issue a new
calibration certificate. Below is a description of how to calibrate via the
supervisor or via the app.
4.2 Calibration kit
The calibration kit is used to perform periodic calibration required for
maintenance of the device. The gas cylinder and pressure adapter to perform
the calibration need to be procured separately.
Calibration kit with adapter, humidifier
The following section describes how to connect the calibration kit to the
sensor in order to complete the calibration procedure in the most suitable
way.
Once the required gas cylinder is available, screw the pressure reducer onto
the cylinder, keeping the valve closed so that no gas is released.
Screw the highlighted part of the calibration kit onto the sensor on the
product being calibrated.
Gas Leakage Detector +0300047IE rel 1.1 – 26.04.2023
Maintenance 23
ENG
Remove the cylinder by pressing the lever and then detaching the two parts.
Immerse the cylinder in a container filled with tap water for a few seconds.
Place it back in the previous position and close the filter, as shown in the
figure. Note the direction of air flow (towards the sensor).
Assemble the various components as shown in the figure, without connecting the
tube to the GLD.
Open the regulator on the gas cylinder to a pressure of around 0.5 l/min and
let the gas flow for a few seconds without the calibration adapter connected
to the sensor, then connect the tube to the GLD.
Alternatively, to vent any residual air from the kit, before fixing the cap to
the sensor, let some gas flow out for a few seconds.
24 Maintenance
Gas Leakage Detector +0300047IE rel 1.1 – 26.04.2023
ENG
4.3 Calibration via app
Before connecting to the device via the RILEVA TE app, first make sure that
the BLUETOOTH connection and GEOLOCATION are enabled on the smartphone used.
Make sure that the Bluetooth mode on the GLD small has been activated using
the magnetic latch as described in the previous chapters. Refer to the
Functions chapter of the RILEVA TE app manual for details of all the app’s
features.
Start calibration on the navigation bar. Before connecting the calibration kit
make sure the sensor is ready and free of gas or other sources of pollution
Click Fresh air calibration at the bottom right, then select Next
To perform the calibration, the specific gas indicated as the “calibration
GAS” needs to be used Enter the gas cylinder reference (serial number of the
reference gas or other information to be shown on the certificate). Enter the
concentration of the gas used for calibration Click send to device to set the
gas concentration used for calibration.
Gas Leakage Detector +0300047IE rel 1.1 – 26.04.2023
Maintenance 25
ENG
Supply the gas at the known concentration using the calibration kit, suitably
installed as described in the previous chapter. Wait about 1 minute until the
gas concentration stabilises.
Click Span Calibration to set the calibration concentration.
Enter the room temperature and relative humidity. These values will be entered on the calibration certificate to indicate the environmental conditions during calibration. It is not necessary to use a calibrated instrument to perform this measurement, an indicative value is sufficient.
26 Maintenance
Gas Leakage Detector +0300047IE rel 1.1 – 26.04.2023
ENG
Verify the summary screen, checking that all the information has been entered
correctly before generating the calibration report.
Save the calibration report. Use File manager to share the calibration report
via email.
Correct completion of the calibration process can be verified by checking that
the value of “Days since last calibration” has been updated to 0.
Gas Leakage Detector +0300047IE rel 1.1 – 26.04.2023
Maintenance 27
ENG
4.4 Calibration via Modbus® communication
Place the sensor in clean air and wait for the warm-up phase to be completed
at the end of the start-up phase. Enter the Technician password to access the
device (2222 to register 205). Send 1 to ZeroCalibration (coil 407) to perform
the fresh air calibration. If coil 407 is read as 0 after calibration, it
means that calibration was successful. Send the span gas concentration to the
SpanConcentration variable (holding register 655). Supply gas to the sensor.
Use the calibration kit and a 0.5 l/min airflow regulator. Wait around 1
minute until the concentration is stable. Send 1 to SpanCalibration (coil
408). Read as 0 to confirm the calibration was successful.
4.4.1 Diagram of the calibration procedure
Sensor Days of Operation Sensor Expired
Days since Service Service Due Zero Calibration
Span Calibration
Max days to service autoset 0
Eseguire calibrazione dello zero
Eseguire calibrazione span
Max days to service autoset 0
Eseguire calibrazione dello zero
Eseguire calibrazione span
Automatico a 0 quando il sensore viene sostituito
Max Days to Service
Max Days to Service
Lifetime Sensor
t
28 Maintenance
Gas Leakage Detector +0300047IE rel 1.1 – 26.04.2023
4.4.2 Operation of the registers for calibration
CCAALLIBIBRRAAZTIOIONNE
ENG
Coil 401 = 1
MMaaninutenzainocnee rreicqhuieirsetda
YESSI
NNO
ImposSteatremmananuuaallylmente
Coil 407 = 1
EsegPeurirfoercmalizberraozione cadleibllroatzieorno
CaliZberarozione cdaleiblloraztieorno coemsepgleutitead??
NNOO
YESSI
Conllengeacrtethilekictadlibcraaltibiornazkioitnaes comeddeessccrirbitetod
nuenldcearpitolo
p”rCoacleibdruartaiodni pcarolibceradzuioren”e
MaInmupaollsytaseret mthaenSupaalmnCeonnteceSnptarnatCioncrengtisratetiro6n55,
rwegitihsttrhoe65va5l,uceoncoilrrveaslporoencdoinrrgisptoonthdeengtaes
aulsgeads applicato iuntitlhizezacnadliobrial tkiiotndikcita. librazione.
OOssbesrevravree tihl leivleelvloeldoi
fcgonascecnotnrcaezinotnraetdioingamsemasisuurreadto, ,
attendewreacitiracbao1umt 1inmutionufitneouanqtiul ando la
thcoengcaesnctoranzcioennetrdatiigoanssètasbtailbisieles
Per laFovrertshieonCeOC2Oveérspioonssibile siemt
pCoosilta4r0e1m=a0numaalmnueanltley
Co(cila4li0b1ra=tio0n(cnaolibt rraezqiuoinreedn)on
richiesta)
ImpoSsteatremmanaunaulalylmente
Coil 408 = 1
EPsergfourirme csaplaibnraczailoibnreatsipoann
CalibSpraaznione cdaellilborasptiaonn coesmepguleitea?d?
NNOO
YESSI
DaysSinceService Input Status 118 = 0
Service Due Coil 401 = 0
Gas Leakage Detector +0300047IE rel 1.1 – 26.04.2023
Maintenance 29
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4.5 Sensor replacement procedure
When the need for replacement is signalled via Modbus communication (coil 311
SensorExpired), proceed as follows: · Acquire a pre-calibrated sensor with the
same part number as the one mounted on the detector. · Disconnect power
4.5.1 Built-in version:
J6
W3 W2 W1
3B 2B 1BJ5
3A 2A 1AJ4
24 Vac/dc
R1 W4
J3
W5 B
A
W6 G0
W8 W7 J2 Sh
J7 G +
J8 J1
Open the cover
J6
W3 W2 W1
3B 2B
1BJ5
3A 2A
1AJ4
24 Vac/dc
R1 W4
J3
W5 B
A
W6 G0
W8 W7 J2 Sh
J7 G
J8 J1
Unplug the pre-calibrated sensor connector from J7
3B
2B
J6
1BJ5
3A 2A
J7
Unscrew the sensor from the inside nut.
J6
W3 W2 W1
3B 2B 1BJ5
3A 2A 1AJ4
24 Vac/dc
R1 W4
J3
W5 B
A
W6 G0
W8 W7 J2 Sh
J7 G +
J8 J1
J6
W3 W2 W1
3B 2B 1BJ5
3A 2A 1AJ4
24 Vac/dc
R1 W4
J3
W5 B
A
W6 G0
W8 W7 J2 Sh
J7 G +
J8 J1
Completely disconnect the pre-calibrated sensor from its housing and replace the pre-calibrated sensor with a new one with the same part number.
30 Maintenance
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J6
W3 W2 W1
3B 2B 1BJ5
3A 2A 1AJ4
24 Vac/dc
R1 W4
J3
W5 B
A
W6 G0
W8 W7 J2 Sh
J7 G +
J8 J1
Screw in the new sensor
J6
W3 W2 W1
3B 2B
1BJ5
3A 2A
1AJ4
24 Vac/dc
R1 W4
J3
W5 B
A
W6 G0
W8 W7 J2 Sh
J7 G
J8 J1
Plug-in the sensor connector to J7
J6
W3 W2 W1
3B 2B
1BJ5
3A 2A
1AJ4
24 Vac/dc
R1 W4
J3
W5 B
A
W6 G0
W8 W7 J2 Sh
J7 G
J8 J1
Close the cover
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Maintenance 31
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4.5.2 Remote version
Detach the remote sensor from the housing used to perform the measurement in
normal conditions
1. Loosen the screw on the cable gland by unscrewing between points 1 and 4
in the figure, so that the cable is free to move inside the cable gland
2. Completely unscrew the screw positioned in point 2 by unscrewing between
points 2 and 4 shown in the figure. In the event of difficulties when
loosening, use pliers in point 2
3. Open the container by pulling points 1 and 4 in the figure, between the
points, so as to remove the electronic board from its housing
Unplug the sensor connector from the electronic board
Unscrew the sensor from the tube so as to separate it from the other parts of
the device
Make sure the new sensor has the same part number as the one just removed.
Screw in the new sensor, making sure to use the highlighted part and not the
opposite part. Place the electronic board inside the tube, making sure that
the connector highlighted in point 1 is positioned in the direction of the
sensor.
Plug the connector into the electronic board Place the board inside the tube
Screw the cable gland to the tube, making sure that the cable is free to move inside the cable gland. Tighten the cable gland on the cable, making sure that the retaining gasket is inside the cable gland.
IMPORTANT: this product uses semiconductors that may be damaged by electrostatic discharges (ESD). When handling printed circuit boards, observe proper ESD precautions so as to not damage the electronics.
4.6 Cleaning the device
Clean the detector with a soft cloth using water and a mild detergent. Rinse
with water. Do not use alcohol, degreasers, sprays, polishes, detergents, etc.
32 Maintenance
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FURTHER INFORMATION
5.1 Sensor operating principle
5.1.1 Semiconductor sensors
Semiconductor or metal-oxide-semiconductor (MOS) sensors are very versatile
and can be used in a wide range of applications: they can measure both gases
and vapours at low ppm and combustible gases at higher concentrations. The
sensor is made from a blend of metal oxides. These are heated to a temperature
between 150 °C and 300 °C, depending on the gas to be detected. The operating
temperature and composition of oxides determines the selectivity of the sensor
with respect to different gases, vapours and refrigerants. Electrical
conductivity increases significantly as soon as gas or vapour molecules come
into contact with the sensor’s surface by diffusion. When the molecules of the
selected gas come into contact with the sensor’s surface, the conductivity of
the semiconductor material increases significantly, in proportion to the
concentration of gas. Consequently, the current running through the sensor
also varies. Water vapour, high ambient humidity, temperature fluctuations and
low oxygen levels can alter the readings, giving a higher concentration than
the actual level.
By using this technology, GLD Small allows the gas detected to be selected
based on its category. Gases are divided into three categories or groups.
Group 1 includes R32 gases, group 2 those HFCs/HFOs and group 3 HCs. Depending
on the gas to be detected, the specific device that detects that category of
gas needs to be purchased, and then the specific gas selected via app or
Modbus. The table in the next chapter shows the list of gases detected and the
corresponding group. For example, if needing to detect R-410A, the required
device needs to be purchased, described as “Group 1”. At the time of
installation, then, select R-410A via app or by setting the corresponding
Modbus register.
The product can detect a wide spectrum of gases, setting the desired gas as
described above; however the default gas must be used to perform the
calibration procedure, as described under “Calibration”.
IMPORTANT: Products with semiconductor technology may be affected by long-term
exposure to high concentrations of gas. In this case, it is recommended to
replace the pre-calibrated sensor only (available separately), to ensure
correct gas detection.
5.1.2 Infrared sensors
Infrared technology detects certain types of gas using an electronic sensor
that measures the infrared rays (IR) radiated at the wavelength that the gas
is sensitive to. This makes it possible to quantify the substance present in
the surrounding air. The NDIR detection method (non-dispersive infrared
sensor) uses optical sensors. The detector output is directly proportional to
the absorption of infrared light at the specific wavelength.
5.1.3 Electrochemical sensors
Electrochemical sensors measure the partial pressure of gases in atmospheric
conditions. The monitored ambient air diffuses through a membrane into a
liquid electrolyte inside the sensor. Immersed in the electrolyte are a
measuring electrode, a counter electrode and a reference electrode. An
electronic circuit with a potentiometer supplies a constant voltage between
the measuring electrode and the reference electrode. The voltage, the
electrolyte and the material used to make the electrodes are selected
according to the gas being measured, so that this is correctly transformed
electrochemically on the electrode for measurement and thus a current is
generated that flows through the sensor. The current value is proportional to
the concentration of gas. At the same time, oxygen from the ambient air reacts
with the counter electrode. At an electronics level, the current signal is
amplified, digitised and corrected based on other control parameters (e.g.
ambient temperature).
5.1.4 Pre-calibrated sensors and devices
Pre-calibrated sensors and devices are supplied with the calibration
certificate included in the packaging, in addition to the instruction sheet.
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Further information 33
ENG
5.2 Gas detected
Register 117 group
4 5 1 2 3
Gas group
CO2 R32 mistNi H3 Tipo 1
HFC/HFO Tipo 2
HC
Tipo 3
Technology
Infrared Electrochemical Semiconductor Semiconductor Semiconductor
Default GAS
CO2 NR3H23 R134a R290
Gas
R-1150 R-1233zde R-1234yf R-1234ze
R-1270 R-134a R-22 R-290 R-32 R-404A R-407A R-407C R-407F R-410A R-448A R-449A
R-450A R-452A R-452B R-454A R-454B R-454C R-455A R-464A R-465A R-466A R-468A
R-50 R-507A R-513A R-600A R-717 R-744
Sensor module group
3 2 2 2 3 2 2 3 1 2 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 3 1 2 3 5 4
Range of measurement.
0-4000 ppm 0-1000 ppm 0-1000 ppm 0-1000 ppm 0-4000 ppm 0-1000 ppm 0-1000 ppm
0-4000 ppm 0-1000 ppm 0-1000 ppm 0-1000 ppm 0-1000 ppm 0-1000 ppm 0-1000 ppm
0-1000 ppm 0-1000 ppm 0-1000 ppm 0-1000 ppm 0-1000 ppm 0-1000 ppm 0-1000 ppm
0-1000 ppm 0-1000 ppm 0-1000 ppm 0-1000 ppm 0-1000 ppm 0-1000 ppm 0-4000 ppm
0-1000 ppm 0-1000 ppm 0-4000 ppm 0-100 ppm 0-10000 ppm
Gas calibration
CO2 NR3H23 R134a R290
GasType register value
53 51 27 28 13 2 1 7 23 3 19 4 22 5 33 34 35 36 38 43 40 44 29 48 49 47 50 52
54 39 9 10 11
5.3 Operation of the relays when the instrument is switched on
At power on, the two warning and alarm relays behave as follows: – stay off
for about 20 seconds – are activated for about 2 seconds – go off for about 2
seconds – are reactivated if failsafe mode is set, or remain deactivated if
failsafe mode is disabled.
5.4 Relay operating modes
The relays have two operating modes, failsafe mode and warning fault mode.
These two modes can be used to select the behaviour of the relays based on the
required alarms and in the event of sensor malfunction.
34 Further information
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5.4.1 Failsafe mode
The relays are set by default to failsafe mode. In this mode, the relays are
active when there are no alarms, they are automatically deactivated in the
event of an alarm or in the event of a power failure (device off ). In this
case, the wiring is as follows:
Powered on – no alarms
Gas detected (alarm active)
No power supply (alarm active)
POWER WARNING ALARM 24 Vdc POWER WARNING ALARM 24 Vdc POWER WARNING ALARM 24 Vdc
3B 2B 1B 3A 2A 1A
3B 2B 1B
3A 2A 1A
+
3B 2B 1B 3A 2A 1A
The relays switch over in the event of an alarm or power failure This setting can be changed by setting the RelayFailSafe variable on the supervisor, so that the relays are activated in normal, non-failsafe mode. In this case, the wiring is as follows:
Powered on – no alarms
3B 2B 1B 3A 2A 1A
Gas detected (alarm active)
3B 2B 1B 3A 2A 1A
No power supply
3B 2B 1B
3A 2A 1A
POWER WARNING ALARM 24 Vdc POWER WARNING ALARM 24 Vdc POWER WARNING ALARM 24 Vdc
+
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Further information 35
ENG
5.4.2 Warning Fault mode
In this operating mode, the behaviour of the relays can be set in the event of
a malfunction or no communication between the pre-calibrated sensor and the
main board. This operating mode can be enabled or disabled from the supervisor
by setting the RelayWF variable or from the parameters section of the app.
Warning Fault mode
disabled Alarm threshold Warning threshold
Fault condition
Warning LED (yellow)
Alarm LED (red)
Normal mode LED (green)
Warning relay Alarm relay
Warning Fault mode enabled
Alarm threshold Warning threshold
Fault condition
Warning LED (yellow) Alarm LED (red)
Normal mode LED (green)
Warning relay Alarm relay
36 Further information
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5.5 Technical specifications
Technical specifications
Semiconductor version
Electrochemical version
Infrared version
Power supply voltage
24Vdc/ac +/-20% 50/60 Hz
User interface
App with Bluetooth
Power input
24 Vdc Max. 4W 24Vac Max 4VA
Power supply frequency
50/60 Hz
Analogue output:
4-20mA / 0-10V / 1-5V / 2-10V selected via software
Serial communication:
Modbus® RS485 isolated slaves
Digital output 1 SPDT:
Alarm – relay 1 A/24 Vdc/ac
Digital output 2 SPDT:
Warning/FAULT – relay 1 A/24 Vdc/ac
Relay failsafe
Yes, selectable
Selectable delay:
0-20 min; 1 minute steps, selectable via Modbus register/app
Hysteresis
± 5% of the threshold value
IP protection:
IP67
Typical operating range:
0-1000 ppm 0-4000 ppm
0-100 ppm
0-10000 ppm
Sensitive element
Pre-calibrated (also available as a spare part) with certificate
Remote cable length
5 metres
Storage temperature
-40 °C to +50 °C.
Storage humidity
5-90% relative humidity, non-condensing.
Storage position
Any
Operating temperature
-40 °C to +50 °C.
Operating humidity
5-90% relative humidity, non-condensing.
Maximum installation altitude
2.000 metres
Operating position
Intended for vertical mounting with the sensor at the bottom
Precision*
<-10%/+15%
±5%
±5%
Start-up time*
60 minutes
5 minutes
2 minutes
Working life *
5 years
2 years
7 years
Calibration procedure requirements
12 months
12 months
Not required
Sensor deterioration on exposure to high gas concentrations
High
High
Low
*Reference conditions at 25°C 50% RH atmospheric pressure 101.3 kPa
5.5.1 Specifiche meccaniche e ambientali
Dimensions Enclosure size (W×H×D) (approx.)
Product weight + casing (approx.)
Built-in: 233x175x97 mm Remote: 233x175x97 mm Built-in: 590 g Remote: 850 g
5.6 Disposal of the device
5.6.1 Disposal of electrical and electronic equipment
Since August 2012, rules governing the disposal of electrical and electronic
equipment defined in European Directive 2012/19/ EU (WEEE) and national laws,
which apply to this device, have been in force throughout the European Union.
Common household appliances can be disposed of via special collection and
recycling sites. However, this device has not been registered for home use.
Therefore it must not be disposed of using these services. Do not hesitate to
contact CAREL if you have any further questions on this topic.
5.6.2 Disposal of the sensors
Dispose of the sensors in accordance with local laws.
DANGER: Do not throw the sensors into fire, due to the risk of explosion and
consequent chemical burns.
WARNING: Do not force open the electrochemical sensors.
WARNING: Observe local regulations regarding waste disposal. For information,
contact your local environmental agency, local government offices or
appropriate waste disposal services.
5.7 Conformity to standards
· (EMC) 2014/30/EU · (LVD) 2014/35/EU · EN61010-1 | UL61010-1/CSA C22.2 No.
61010-1 · EN 378 · EN14624 · EN50270 · EN50271 · IEC 60335-2-40:2018 (A2L
refrigerants) · (RED-FCC) 2014/53/EU
Gas Leakage Detector +0300047IE rel 1.1 – 26.04.2023
Further information 37
ENG
6. ORDER INFORMATION
6.1 Gas Detector GLD Small series part numbers
CAREL part number Description
GDSBI20C00
Gas detector small r-744 (co2) infrared wall built-in
GDSBE19C00
Gas detector small r-717 (ammonia) electrochemical wall built-in
GDSBSMXC00
Gas detector small group 1 semiconductor wall built-in
GDSBSHFC00
Gas detector small group 2 semiconductor wall built-in
GDSBSHCC00
Gas detector small group 3 semiconductor wall built-in
GDSRI20C00
Gas detector small r-744 (co2) infrared wall remote
GDSRE19C00
Gas detector small r-717 (ammonia) electrochemical wall remote
GDSRSMXC00
Gas detector small group 1 semiconductor wall remote
GDSRSHFC00
Gas detector small group 2 semiconductor wall remote
GDSRSHCC00
Gas detector small group 3 semiconductor wall remote
Tab. 6.a
6.2 Sensitive element part numbers
CAREL part number
GDOPZI2010SP GDOPZE1910SP GDOPZSMX10SP GDOPZSHF10SP GDOPZSHC10SP
Description
Pre-calibrated sensor module small – r-744 (co2) infrared Pre-calibrated
sensor module small – r-717 (ammonia) electrochemical Pre-calibrated sensor
module small – group 1 semiconductor Pre-calibrated sensor module small –
group 2 semiconductor Pre-calibrated sensor module small – group 3
semiconductor
6.3 Accessories
CAREL P/N GDOPZT0010
Description GAS DETECTOR – CALIBRATION KIT FOR SMALL EDITION
Tab. 6.b Tab. 6.c
6.4 Detected gases (semiconductor versions)
Group 1
Group 2 Group 3
R-32 – R-407A – R-407C – R-407F – R-410A – R-448A – R-449A – R-452A – R-452B
R-454A – R-454B – R-454C –
R-455A – R-464A – R-465A – R-466A – R-468A – R-507A R-22 – R-134a – R-404A –
R-450A – R-513A – R-1234yf – R-1234ze – R-1233zde R-50 – R-290 – R-600A –
R-1150 – R-1270
38 Order information
Gas Leakage Detector +0300047IE rel 1.1 – 26.04.2023
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7. MOUNTING TEMPLATE
Gas Leakage Detector +0300047IE rel 1.1 – 26.04.2023
Mounting template 39
CAREL INDUSTRIES – Headquarters Via dell’Industria, 11 – 35020 Brugine – Padova (Italy) Tel. (+39) 049.9716611 – Fax (+39) 049.9716600 e-mail: carel@carel.com – www.carel.com
Gas Leakage Detector +0300047IE rel 1.1 – 26.04.2023