THERMASGARD RGTF1 Duct Temperature Sensor Instruction Manual

RGTF1 Duct Temperature Sensor
Instruction Manual 6000-2750-0000-1XX 27500 -2022 V112 03 ⁄ 2022
THERMASGARD® RGTF 1 xx

Operating Instructions, Mounting & Installation

Duct / smoke gas temperature sensor, including mounting flange, with passive output

CARTONS ET EMBALLAGE PAPIER À TRIER

Dimensional drawing

2-wire connection (Standard) 4-wire connection (optional) Resistance thermometer ⁄ smoke gas temperature sensor THERMASGARD® RGTF 1 with passive output, with connecting head made from aluminium (optionally with cable gland or M12 connector according to DIN EN 61076-2-101) and straight protective tube, incl. mounting flange. The duct sensor is used to detect relatively high temperatures in gaseous media, eg, for exhaust air and smoke gas temperature measurement. 

TECHNICAL DATA

(Perfect Sensor Protection)
Connection type:| 2-wire connection (Pt1000)
4-wire connection (Pt100 / Pt1000 optional)
Testing current:| < 0.6 mA (Pt1000) < 1.0 mA (Pt100)
Insulating resistance:| 100MQ, at +20°C (500V DC)
Electrical connection:| 0.14- 2.5 mm2 via terminal screws on ceramic base
Cable connection:| RGTF 1 (standard) adjusting screw made of metal (M20x1.5);
RGTF 1-KV (optional) cable gland, brass, nickel-plated
(M 20 x1.5; with strain relief, exchangeable, inner diameter 6-12 mm)
RGTF 1-0 (optional)
M12 connector according to DIN EN 61076-2-101 (male, 5-pin, A-code)
Dimensions:| see dimensional drawing
Connecting head:| form B, material aluminium,
colour white aluminium (similar to RAL 9006), ambient temperature —20+100°C
Protective tube:| stainless steel V4A (1.4571), 0 = 8mm inserted length [EL) = 200-500mm (see table)
Process connection:| by mounting flange,
stainless steel V2A (1.4305) [included in the scope of delivery)
Humidity:| < 95% r. H., non-precipitating air
Protection class:| III (according to EN 607301
Protection type:| IP 54 (according to EN 60529) RGTF 1
IP 65 (according to EN 60529) RGTF1-KV / RGTF1-0
Type ⁄ WG03| Sensor ⁄ Output
---|---
RGTF1 PT100 xx (EL) MM| Pt100 (according to DIN EN 60 751, class B)
RGTF1 PT1000 xx (EL) MM| Pt1000 (according to DIN EN 60 751, class B)
RGTF 1 PT100 xx KV (EL) MM| Pt100 (according to DIN EN 60 751, class B)
RGTF 1 PT1000 xx KV (EL) MM| Pt1000 (according to DIN EN 60 751, class B)
RGTF 1 PT100 xx Q (EL) MM| Pt100 (according to DIN EN 60 751, class B)
RGTF 1 PT1000 xx Q (EL) MM| Pt1000 (according to DIN EN 60 751, class B)
Inserted Length:| (EL)MM = 200 mm, 250 mm, 300 mm, 500 mm
Extra charge:| Other ranges optional

General notes

Measuring principle of HVAC temperature sensors in general:
The measuring principle of temperature sensors is based on an internal sensor that outputs a temperature-dependent resistance signal.
The type of the internal sensor determines the output signal. The following active ⁄ passive temperature sensors are distinguished:
a) Pt 100 measuring resistor (according to DIN EN 60 751)
b) Pt 1000 measuring resistor (according to DIN EN 60751)
c) Ni 1000 measuring resistor (according to DIN EN 43 760, TCR = 6180 ppm ⁄ K)
d) Ni 1000_TK 5000 measuring resistor (TCR = 5000 ppm ⁄ K)
e) LM235Z, semiconductor IC (10 mV ⁄ K, 2.73 V ⁄ °C). Ensure correct polarity

• ⁄ – when connecting!
  f) NTC (according to DIN 44070)
  g) PTC
  h) KTY silicon temperature sensors
  The most important resistance characteristics are shown on the last page of these operating instructions. According to their characteristics, individual temperature sensors exhibit different slopes in the range between 0 °C and +100 °C (TK value). Maximum-possible measuring ranges also vary from sensor to sensor (for some examples to this see under technical data).
  Note!
  Select immersion depth for built-in sensors so that the error caused by heat dissipation stays within the admissible error margins. A standard value is: 10 x diameter of protection tube + sensor length. In connection with housing-type sensors, particularly with outdoor sensors, please consider the influence of thermal radiation. For that purpose, a sunshade and radiation protector SS-02 can be attached.
  Maximum thermal load on components:
  On principle, all temperature sensors shall be protected against unacceptable overheating!
  Standard values for individual components and materials selected are shown for operation under
  neutral atmos phere and otherwise normal conditions (see table to the right).
  For combinations of different insulating materials, the lowest temperature limit shall always apply.
  Component ………………………………………………………. max. thermal load
  Connecting cable
  PVC, normal …………………………………………………………………………+70 ° C
  PVC, heat-stabilized………………………………………………………….. +105 °C
  Silicone …………………………………………………………………………….. +180 °C
  PTFE …………………………………………………………………………………+200 °C
  Fibreglass insulation with stainless steel texture ……………+400 °C
  Housing ⁄ Sensor
  see table “Technical Data”
  Resistance characteristics of passive temperature sensors (see last page)
  In order to avoid damages ⁄ errors, preferably shielded cables are to be used.
  Laying measuring cables parallel with current-carrying cables must in any case be avoided. EMC directives shall be observed!
  These instruments must be installed by authorised specialists only!
  Limiting deviation according to classes:
  Tolerances at 0 °C:
  Platinum sensors (Pt100, Pt1000):
  DIN EN 60751, class B ……………………………………………………….± 0.3 K
  1 ⁄ 3 DIN EN 60751, class B ………………………………………………..± 0.1 K
  Nickel sensors:
  NI1000 DIN EN 43760, class B ………………………………………….± 0.4 K
  NI1000 1 ⁄ 2 DIN EN 43760, class B…………………………………..± 0.2 K
  NI1000 TK5000 …………………………………………………………………± 0.4 K
  ATTENTION, NOTE !
  Testing current influences the thermometer‘s measuring accuracy due to intrinsic heating and therefore, should never be greater than as specified below:
  Standard values for testing current:
  Sensor current, maximum ……………………………………………………….. I max.
  Pt1000  (thin-layer) ………………………………………………………… < 0,6 mA
  Pt100 (thin-layer) ………………………………………………………… < 1,0 mA
  Ni1000 (DIN), Ni1000 TK5000 ……………………………………… < 0,3 mA
  NTC xx ……………………………………………………………………………….. < 2 mW
  LM235Z ………………………………………………………………….. 400 µ A … 5 mA
  KTY 81 – 210 …………………………………………………………………………< 2 mA

Installation and Commissioning

Devices are to be connected under dead-voltage condition. Devices must only be connected to safety extra-low voltage. Consequential damages caused by a fault in this device are excluded from warranty or liability.
These devices must be installed and commissioned by authorised specialists. The technical data and connecting conditions shown on the device labels and in the mounting and operating instructions delivered together with the device are exclusively valid. Deviations from the catalogue representation are not explicitly mentioned and are possible in terms of technical progress and continuous improvement of our pro ducts. In case of any modifications made by the user, all warranty claims are forfeited. Operating this device close to other devices that  o not comply with EMC directives may influence functionality. This device must not be used for monitoring applications, which serve the purpose of protecting persons against hazards or injury, or as an EMERGENCY STOP switch for systems or machinery, or for any other similar safety-relevant purposes.
Dimensions of housing or housing accessories may show slight tolerances on the specifications provided in these instructions. Modifications of these records are not permitted. In case of a complaint, only complete devices returned in original packing will
be accepted.
Our “General Terms and Conditions for Business“ together with the “General Conditions for the Supply of Products and Services of the Electrical and Electronics Industry“ (ZVEI conditions) including supplementary clause “Extended Retention of Title“ apply as the exclusive terms and conditions“.
Notes regarding mechanical mounting and attachment:
Mounting shall take place while observing all relevant regulations and standards applicable for the place of measurement (e.g. such as welding instructions, etc.).
Particularly the following shall be regarded:
– VDE ⁄ VDI directive technical temperature measurements, measurement set – up for temperature measurements.
– The EMC directives must be adhered to.
– It is imperative to avoid parallel laying of current-carrying lines.
– We recommend to use shielded cables with the shielding being attached at one side to the DDC ⁄ PLC.
– If the sensor is used in refrigeration circuits, it must be insulated together with the housing to reduce the temperature potential between the device and the medium to a minimum and thus prevent condensation damage.
Before mounting, make sure that the existing thermometer‘s technical parameters comply with the actual conditions at the place of utilization, in particular in respect of:
– Measuring range
– Permissible maximum pressure, flow velocity
– Installation length, tube dimensions
– Oscillations, vibrations, shocks are to be avoided (< 0.5 g)
Attention! In any case, please observe the mechanical and thermal load limits of the protective tubes according to DIN 43763 or according to specific S+S standards!
Notes regarding process connection of built-in sensors:
If possible, select material of protective tube to match the material of piping or tank wall, in which the thermometer will be installed!
Maximum temperatures Tmax and maximum pressures pmax are as follows:
for TH – MS brass sleeves Tmax = +150 °C, pmax = 10 bar
and for TH – VA stainless steel sleeves (standard) Tmax = +400 °C,
pmax = 40 bar.
Screw-in threads:
Ensure appropriate support of the gasket or sealing material when mounting! Permissible tightening torque standard values for screw – in threads, are as follows:
M 18 x 1.5; M 20 x 1.5; pipe thread G ½ ” : 50 Nm
M 27 x 2.0; pipe thread G ¾ ” : 100 Nm
Flange mounting:
In case of flange mounting, screws in the flange part must be equally tightened. The lateral pressure screw must clamp securely, otherwise the feeler shaft might slip through.
Welding sleeves:
Specific welding instructions shall be observed.
On principle, unevenness or the like that might influence the system‘s ”CIP ability“ must not develop at welds.
For high-pressure lines, pressure test certifications and inspections are required.
Notes on commissioning:
This device was calibrated, adjusted and tested under standardised conditions.
When operating under deviating conditions, we recommend performing an initial manual adjustment on-site during commissioning and subsequently at regular intervals.
Commissioning is mandatory and may only be performed by qualified personnel!
Permissible approach velocities (flow rates) for crosswise approached protective tubes in water.
The approaching flow causes protective tube to vibrate. If specified approach velocity is exceeded even by a marginal amount, a negative impact on the protective tube’s service life may result (material fatigue). Discharge of gases and pressure surges must be avoided as they have a negative influence on the service life and may damage the protective tubes irreparably.
Please observe maximum permissible approach velocities
for stainless steel protective tubes 8 x 0.75 mm (1.4571) (see graph TH – VA ⁄ xx, TH – VA ⁄ xx ⁄ 90) as well as for brass protective tubes 8 x 0.75 mm (see graph TH – ms ⁄ xx) : Mounting diagram Measuring insert © Copyright by S+S Regeltechnik GmbH
Reprint in full or in parts requires permission from S+S Regeltechnik GmbH.
Subject to errors and technical changes. All statements and data herein represent our best knowledge at date of publication. They are only meant to inform about our products and their application potential, but do not imply any warranty as to certain product characteristics. Since the devices are used under a wide range of different conditions and loads beyond our control, their particular suitability must be verified by each customer and/or end user themselves. Existing property rights must be observed. We warrant the faultless quality of our products as stated in our General Terms and Conditions.
Resistance characteristics of passive temperature sensors

°C| Pt100 Ω| Pt1000 Ω| Ni1000 Ω| Ni1000 TK5000 Ω| LM235Z (KP10) mV| NTC 1.8kOhm Ω| NTC 10kOhm Ω| NTC 20kOhm Ω
---|---|---|---|---|---|---|---|---
-50| 80.3| 803| 743| 790.8| –| –| –| –
-40| 84.3| 843| 791| 826.8| 2330| 39073| –| 806800
-30| 88.2| 882| 842| 871.7| 2430| 22301| 175785| 413400
-20| 92.2| 922| 893| 913.4| 2530| 13196| 96597| 220600
– 10| 96.1| 961| 946| 956.2| 2630| 8069| 55142| 122260
0| 100.0| 1000| 1000| 1000.0| 2730| 5085| 32590| 70140
+10| 103.9| 1039| 1056| 1044.8| 2830| 3294| 19880| 41540
+20| 107.8| 1078| 1112| 1090.7| 2930| 2189| 12491| 25340
+30| 111.7| 1117| 1171| 1137.6| 3030| 1489| 8058| 15886
+40| 115.5| 1155| 1230| 1185.7| 3130| 1034| 5329| 10212
+50| 119.4| 1194| 1291| 1235.0| 3230| 733| 3605| 6718
+60| 123.2| 1232| 1353| 1285.4| 3330| 529| 2489| 4518
+70| 127.1| 1271| 1417| 1337.1| 3430| 389| 1753| 3098
+80| 130.9| 1309| 1483| 1390.1| 3530| 290| 1256| 2166
+90| 134.7| 1347| 1549| 1444.4| 3630| 220| 915| 1541
+100| 138.5| 1385| 1618| 1500.0| 3730| 169| 678| 1114
+110| 142.3| 1423| 1688| 1557.0| 3830| 131| 509| 818
+120| 146.1| 1461| 1760| 1625.4| 3930| 103| 389| 609
+130| 149.8| 1498| 1833| –| –| –| 300| 460
+140| 153.6| 1536| 1909| –| –| –| 234| 351
+150| 157.3| 1573| 1987| –| –| –| 185| 272

Pin assignment (M12)   

References

• S+S Regeltechnik | Ihr sensorik Partner

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