COMET T3113 Temperature and Humidity Duct Probe Instruction Manual

Temperature and Humidity Duct Probe
Instruction Manual
T3113/ T3113D/ T3113L/T3113Ex
T3117/T3117D/T3117L

Programmable duct mount transmitter of temperature, relative humidity, and other calculated humidity values with 4 – 20 mA outputs

General description

The duct mount transmitters T3113 and T3117 with metal stem are designed for the measurement of temperature and relative humidity of air without aggressive substances. Measured values are converted to other humidity interpretations: dew point temperature, absolute humidity, specific humidity, mixing ratio, and specific enthalpy.
Measured and computed values are displayed on a two-line LCD display. The first line displays the temperature (ºC / ºF). The value displayed on the second line is selectable among relative humidity and computed value. It is also possible to display both readings with cyclic overwriting (4 seconds interval) or to switch off the LCD display at all.
The transmitter communicates by means of two galvanically separated current loops 4-20mA. Each loop has a two-wire connection and each loop requires power from the evaluation device. It is always necessary to connect loop I1 which is designed for supplying of measuring part of the device. Using the configuration software can be assigned to each current loop any measured or computed value.
All transmitter setting is performed by means of the PC connected via the optional SP003 communication cable (not included in delivery). Using sensor software (see www.cometsystem.com) you can assign to each output any measured or computed value and set its measuring range. It is also possible to assign both outputs to the same value (with the same range) if two evaluation devices are necessary to connect. The program supports making the adjustment to the device too. This procedure is described in the file „Calibration manual.pdf“ which is installed commonly with the software.
Device versions:

of a cable gland for easy connection/disconnection of the
output cable (protection IP67)
T3113D, T3117D| transmitter with cable gland and LCD display positioned perpendicular to the stem
T3113Ex| intrinsically safe transmitter for use in potentially explosive environments
T3113Z, T3117Z| this marking is intended for non-standard versions of the transmitters. The description is not included in this manual.

T3113Ex transmitter

Transmitter T3113Ex is designed and certified for use in hazardous areas. In compliance with European Directive 2014/34/EU (ATEX) the T3113Ex transmitter conforms to European Standards EN 60079-0:2018 and EN 60079-11:2012.
The transmitter is suitable for use in potentially explosive atmospheres (Apparatus Groups LLC) in applications requiring devices category 3G.
Type Examination Certificate number FTZÚ 13 ATEX 0189X is available at www.cometsystem.com.

Factory settings

If a special setting was not required in the order device is set from the manufacturer to the following parameters:

value at output I1:| relative humidity range 4-20 mA corresponds to 0 to 100 %RH
---|---
value at output I2:| temperature range 4-20 mA corresponds to -30 to +125 ºC
display:| switched ON
temperature unit:| °C
the value displayed in line 2:| relative humidity

**Device installation

**

Transmitters are designed for installation into the air-conditioning duct by clamping the metal stem into the cable gland Pg21. Also, it is possible to use the installation flanges PP4 or PP90 (see optional accessories). Pay particular attention to the safe installation of sensors T3113Ex.
The connecting terminals are accessible after unscrewing the four screws in the corners of the case and removing the lid. Pass the connecting cable through the released gland and connect the wires to terminals (see “Typical application wiring”). Tighten the gland and screw the lid (check the integrity of the seal). The female connector for connecting the T3113(7)L transmitter connects according to the diagram at “Typical application wiring”.
For device connection, it is recommended to use a shielded cable with a maximum length of 1200m. The external diameter of the cable for T3113(7), T3113(7)D, and T3113Ex connection is 4 to 8 mm. For T3313L connection use cable with respect to female connector parameters (do not connect shielding at connector side). When selecting the type of cable for T3113Ex connection and when choosing a location for T3113Ex mounting it is necessary to observe the conditions for safe installation in potentially explosive environments. The cables should be located as far as possible from potential interference sources.
It is not recommended to use the device for a long time under condensation conditions or water aerosol conditions. It could be the cause of water steam condensation inside the sensor’s cover with a consequential increase in response time to humidity changes. It can cause sensor damage too.
Devices don´t require special operation and maintenance. It is recommended to keep a clean sensor cover and periodically verify the accuracy of measurement.
Warning

• Installation, commissioning, and maintenance may only be carried out by personnel with qualifications by applicable regulations and standards.
• Don´t connect the transmitter while the power supply voltage is on.
• The ambient temperature of the housing with electronics of the T3113Ex transmitter is not allowed to exceed 60 ºC.
• Under certain extreme circumstances, the plastic enclosure of the T3113Ex transmitter may store an ignition-capable level of electrostatic charge. The device shall not be installed in a location where the external conditions are conducive to the build-up of electrostatic charge. The equipment shall only be cleaned with a damp cloth.

Info mode

Several settings of the installed transmitter are possible to verify without the use of the computer. It is necessary to connect at least the power of current loop I1. Unscrew the transmitter lid and shortly press the button between the display and interconnection terminals by means of a tool (e.g. screwdriver).

| The LCD display shows the type of value assigned to 1. output (here „%RH“ = relative humidity and „1“ = loop I1). The upper line displays the value of the current corresponding to the measured value on the lower line (here 4 mA corresponds to 0 %RH).
---|---
| Press the button again to get the value for the upper point of the 1. output (here „%RH“ = relative humidity and 1“ = loop 1). The upper line displays the value of the current corresponding to the measured value on the lower line (here 20 mA corresponds to 100 %RH).
| After the next press of the button LCD display shows the type of value assigned to the 2. output (here „ºC“ = temperature and „2“= loop I2). The upper line displays the value of the current corresponding to the measured value on the lower line (here 4 mA corresponds to 30 ºC).
| Press the button again to get the value for the upper point of the 2. output (here „ºC“ = temperature and „2“ = loop 2). The upper line displays the value of the current corresponding to the measured value on the lower line (here 20 mA corresponds to 80 ºC).

Press the button again to end info mode and display actual measured values.
Warning

• During info mode, no measurement and no output current generation proceed. The transmitter stays at info mode for 15 s, and then automatically goes back to the measuring cycle.
• The verifying of settings of the T3113Ex transmitter is permitted only in a non-hazardous area.

**Modification of device adjustment

**

Device adjustment is performed by means of the optional SP003 communication cable, connected to the USB port of the PC. It is necessary to have installed the configuration program TSensor on the PC (the program is free to download at www.cometsystem.com). During installation please take care of the installation of the driver for the USB communication cable.

• unscrew four screws of the device lid and remove the lid. If the device is already installed in the measuring system, disconnect wires from terminals
• and connect the SP003 communication cable to the PC. Installed USB driver detect connected to cable and create virtual COM port inside the PC
• run installed Tensor program and continue in accordance with his instructions
• when a new setting is saved and finished, disconnect the cable from the device, connect wires to its terminals and place the lid back on the device

Warning

• Modification of adjustment of the T3113Ex transmitter using a cable SP003 is permitted only in non-hazardous areas.

Error states of the device

The device continuously checks its state during operation. In case the error is found LCD displays the corresponding error code:
Error 0
– first line displays „Err0“ (output current value is < 3.8 mA). Check sum error of stored setting inside device’s memory. This error appears if an incorrect writing procedure to the device’s memory occurred or if damage to calibration data appeared. At this state, the device does not measure and calculated values. It is a serious error, contact the distributor of the device to fix it.
Error 1
there is a reading „Err1“ on the LCD display (output current value is > 22 mA). The measured or computed value is higher than the upper limit. This state appears in the case of:

• the measured temperature is higher than approximately 600 °C (i.e. high non-measurable resistance of temperature sensor, probably opened circuit)
• relative humidity value is higher than 100 %, i.e. damaged humidity sensor, or humidity calculation of humidity is not possible (due to error during temperature measurement)
• calculation of the computed value is not possible (error during measurement of temperature or relative humidity or value is over range)

Error 2
– there is a reading „Err2“ on the LCD display (output current value is < 3.8 mA). The measured or computed value is below the lower limit of the allowed full-scale range. This state appears in the case of:

• the measured temperature is lower than approximately -210 °C (i.e. low resistance of temperature sensor, probably a short circuit).
• relative humidity value is lower than 0 %, i.e. damaged sensor for measurement of relative humidity, or calculation of relative humidity is not possible (due to error during temperature measurement)
• calculation of the computed value is not possible (error during measurement of temperature or relative humidity)

Error 3
– there is a reading „Err3“ on the LCD display upper line. The error of the internal A/D converter appeared (converter does not respond, probably damage of A/D converter). No measurement and calculations of values proceed. If it is a serious error, contact the distributor of the instrument.

Technical support and service

Technical support and service are provided by the distributor. For contact see warranty certificate. You can use the discussion forum at the web address www.forum.cometsystem.cz.

Technical data

Temperature:

Relative humidity:

Accuracy data are valid for values displayed on LCD display. For accuracy of analog outputs are valid this data in case, when the output range is set within the range of measurement.
Relative humidity and temperature restriction:

Calculated humidity values
Dew point temperature::

Accuracy:|  ±1.5°C at ambient temperature T < 25 °C and RH > 30 %, for more details see graphs
---|---
 Measuring range:| -60 to +80 ºC

Absolute humidity:

Accuracy:|  ±1.5 g/m³  at ambient temperature T < 25 °C, for more details, see the graph
---|---
 Measuring range:| 0 to 400 g/m³

Specific humidity
This value depends on atmospheric pressure. Pressure for quantities calculation is stored in device memory. The default value is 1013hPa and can be changed by software.

Mixing ratio
This value depends on atmospheric pressure. Pressure for quantities calculation is stored in device memory. The default value is 1013hPa and can be changed by software.

Specific enthalpy
This value depends on atmospheric pressure. Pressure for quantities calculation is stored in device memory. The default value is 1013hPa and can be changed by software.

General
Power supply voltage: 9 to 30 Vdc
Current output in case of error: < 3.8 mA or > 22 mA
Recommended calibration interval: 1 year (relative humidity 1 year, temperature 2 years)
Protection: housing with electronics IP65, sensors are located in cover with IP40 protection
Working position: in air-conditioning duct arbitrary, in free space the steel stem downwards
Storage temperature range: -30 to +80 °C
Storage relative humidity range: 0 to 100 %RH (no condensation)
Certification of T3113Ex transmitter:

mA, Io = 22 mA, Ci ~ 0, Li ~ 0

Special condition for safe use (sign “X”): Under certain extreme circumstances, the plastic enclosure may store an ignition-capable level of electrostatic charge. The device shall not be installed in a location where the external conditions are conducive to the build-up of electrostatic charge. The equipment shall only be cleaned with a damp cloth.
Electromagnetic compatibility: EN 61326-1
Weight: approximately
T3113, T3113L, T3113D, T3113Ex 150 g
T3117, T3117L, T3117D 580 g
Housing material: ASA
Operating conditions

Temperature operating range of the housing with electronics:| -30 to +80 ºC/T3113(7)
-30 to +80 ºC/T3113(7)L
-30 to +80 ºC/T3113(7)D
---|---
Ambient temperature range of the housing with electronics:| -30 to +60 ºC
T3113Ex
Temperature operating range of the measuring end of stem:| -30 to +125 ºC
Relative humidity operating range:| 0 to 100 %RH (no condensation)

End of operation
Dispose of the device according to statutory regulations.
Dimensions

T3113
T3117
T3113Ex

|

T3113L
T3117L

---|---
|

T3113D
T3117D

|

Typical application wiring

T3113
T3113D
T3117
T3117D Loop resistance value Rc = Rm + resistance of wires shall
fulfill the condition Rc[Ω] < 40 x Uss[V] – 360.

|

T3113Ex

Loop resistance value Rc = Rm + Rs + resistance of wires
shall fulfill the condition Rc[Ω] < 40 x Uss[V] – 360.
Intrinsically safe parameters of the transmitter:
Ui = 30 V, Ii = 100 mA, Io = 22 mA, Ci ~ 0, Li ~ 0

---|---

T3113L
T3117L

Loop resistance value Rc = Rm + resistance of wires shall fulfill the condition Rc[Ω] < 40 x Uss[V] – 360.

Optional accessory

Mounting flange PP4

|

Mounting flange PP90

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|

© Copyright: COMET SYSTEM, Ltd.
It is prohibited to copy and make any changes in this manual, without the explicit agreement of the company COMET SYSTEM, Ltd. All rights reserved.
COMET SYSTEM, Ltd. makes constant development and improvement of their products. The manufacturer reserves the right to make technical changes to the device without previous notice. Misprints reserved.
The manufacturer is not responsible for damages caused by using the device in conflict with this manual.
To damages caused by using the device in conflict with this manual cannot be provided free repairs during the warranty period.
Read carefully instruction manual before the first device connection. Contact address of this device’s producer:

COMET SYSTEM, s.r.o.
Bezrucova 2901
756 61 Roznov pod Radhostem
Czech Republic
www.cometsystem.com
IE-SNC-T3113(7)-11

Documents / Resources

| COMET T3113 Temperature and Humidity Duct Probe [pdf] Instruction Manual
T3113, T3113D, T3113L, T3113Ex, Temperature and Humidity Duct Probe, Humidity Duct Probe, Duct Probe, T3113, Probe
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References

• Manufacturer of Dataloggers, Thermometers, Hygrometers,CO2 meters
• Manufacturer of Dataloggers, Thermometers, Hygrometers,CO2 meters
• Comet system forum

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