WIKA · Temperature measurement · Family TR
Resistance thermometer for flue gas temperature measurements
Resistance thermometer for flue gas temperature measurements with thermowell model TW81, suitable for gaseous media up to 1 bar, with replaceable measuring insert and optional transmitter.
Range
-196…600 °C
Output
4-20mA · HART
Accuracy
Class B
Protection
IP53
RoHSEU declaration of conformityEMC directive EN 61326CEEACINMETRONEPSIKCPESODNOP-MakNIIGOSTKazInMetrMTSCHSBelGIMUkrSEPROUzstandard[II 2G Ex eb IIC T1 ... T6 Gb][II 3G Ex ec IIC T1 ... T6 Gc X][II 3D Ex tc IIIC TX °C Dc X][II 1G Ex ia IIC T1 ... T6 Ga][II 2G Ex ia IIC T1 ... T6 Gb][II 2D Ex tb IIIC TX °C Db][II 3G Ex nA IIC T1 ... T6 Gc X]IECExKCs-KOSHA[II 1G Ex iia IIC T1 ... T6 Ga][II 2G Ex iia IIC T1 ... T6 Gb][II 2D Ex tb IIC TX °C Db][II 3D Ex tc IIC TX °C Dc X][Ex iia IIC T1 ... T6 Ga][Ex iia IIC T1 ... T6 Ga/Gb][Ex iia IIC T1 ... T6 Gb][Ex iia IIC T125 ... T65 °C Da][0 Ex iia IIC T6 ... T1 Ga X][1 Ex iia IIC T6 ... T1 Gb X][Ex nA IIC T6 ... T1 Gc X][Ex iia IIC T3 ... T6 Ga][Ex iia IIC T3 ... T6 Ga/Gb][Ex iia IIC T3 ... T6 Gb][Exia IIC T1~~T6Ga][Exia IIC T1~~T6Ga/Gb][Exia IIC T1~T6Gb][Exia IIC T4...T6][Exib IIC T4...T6][II1G Exia IIC T3...T6Ga][II1/2G Exia IIC T3...T6Ga/Gb][II2G Exia IIC T3...T6Gb][II1D Exia IIIC T125...T65℃Da][II2D Exia IIIC T125...T65℃Db]
Price
On request
Depends on configuration
Description
These straight resistance thermometers consist of a form B connection head, a measuring insert in accordance with DIN 43735 and a model TW81 thermowell. In addition to DIN form A or C thermowells, customer-specific versions are possible.
Possible process connections are stop flange or threaded bushing - the latter can realise a gas-tight connection.
These thermometers are suitable for gaseous media in the low pressure range (up to approx. 1 bar). Different thermowell materials, with or without enamelling, ensure matching to the respective thermal load.
Measuring insert is replaceable. This enables inspection, measuring equipment monitoring or, when servicing is necessary, replacement while the plant is running. The choice of standard lengths assists with short delivery times and the possibility of stocking spare parts.
for further approvals see page 2
Resistance thermometer for flue gas temperature measurements, model TR81
Thermowell material, connection head and sensor can each be selected to suit the respective application.
Optionally, a transmitter can be built in. Among the advantages of a built-in transmitter is an increased reliability of the signal transmission.
Special features
- Application ranges up to +600 °C [+1,112 °F]
- Thermowell from heat-resistant steel
- Measuring insert replaceable
- Gas-tight process connection (option)
Identification
| Model | TR81 |
| Product family | TR |
| Subcategory | straight resistance thermometer |
Measuring range
| Temperature ranges | −196…+600 °C · −100…+450 °C · −50…+250 °C · −50…+500 °C · −30…+300 °C · +0…+150 °C |
Accuracy
| Accuracy class | Class B |
| Safety integrity level (SIL) | SIL 2 |
Process conditions
| Process connection | stop flangethreaded bushingG 1G 1½G ½G ¾1 ½ inch, 150 lbs, RF1 ½ inch, 300 lbs, RF2 inch, 150 lbs, RF2 inch, 300 lbs, RF3 inch, 150 lbs, RF3 inch, 300 lbs, RF4 inch, 150 lbs, RF4 inch, 300 lbs, RFMating flangeFlange welded to thermowell |
| Process temperature | −196…+600 °C |
Electrical characteristics
| Output signal | 4-20mA · HART · FOUNDATION Fieldbus · PROFIBUS-PA |
| Power supply | varies by transmitter model |
| Electrical connection | M20 x 1.5 |
Materials
| Probe material | stainless steel, carbon steel 1.0305, stainless steel 1.4571, stainless steel 1.4841, stainless steel 1.4762 |
| Thermowell material | carbon steel 1.0305, carbon steel 1.0305 enamelled, stainless steel 1.4571, stainless steel 1.4841, stainless steel 1.4762, Carbon steel 1.0305, enamelled |
Operating environment
| Ambient temperature | −20…+85 °C |
| IP rating | IP53 |
Certifications and approvals
| Certifications | RoHSEU declaration of conformityEMC directive EN 61326CEEACINMETRONEPSIKCPESODNOP-MakNIIGOSTKazInMetrMTSCHSBelGIMUkrSEPROUzstandard |
| Explosion protection | [II 2G Ex eb IIC T1 ... T6 Gb][II 3G Ex ec IIC T1 ... T6 Gc X][II 3D Ex tc IIIC TX °C Dc X][II 1G Ex ia IIC T1 ... T6 Ga][II 1/2G Ex ia IIC T1 ... T6 Ga/Gb][II 2G Ex ia IIC T1 ... T6 Gb][II 1D Ex ia IIIC T125 ... T65 °C Da][II 1/2D Ex ia IIIC T125 ... T65 °C Da/Db][II 2D Ex ia IIIC T125 ... T65 °C Db][II 2D Ex tb IIIC TX °C Db][II 3G Ex nA IIC T1 ... T6 Gc X]IECExEACINMETRONEPSIKCs-KOSHAPESODNOP-MakNII[II 1G Ex iia IIC T1 ... T6 Ga][II 1/2G Ex iia IIC T1 ... T6 Ga/Gb][II 2G Ex iia IIC T1 ... T6 Gb][II 1D Ex iia IIC T125 ... T65 °C Da][II 1/2D Ex iia IIC T125 ... T65 °C Da/Db][II 2D Ex iia IIC T125 ... T65 °C Db][II 2D Ex tb IIC TX °C Db][II 3D Ex tc IIC TX °C Dc X][Ex iia IIC T1 ... T6 Ga][Ex iia IIC T1 ... T6 Ga/Gb][Ex iia IIC T1 ... T6 Gb][Ex iia IIC T125 ... T65 °C Da][Ex iia IIC T125 ... T65 °C Da/Db][0 Ex iia IIC T6 ... T1 Ga X][1 Ex iia IIC T6 ... T1 Gb X][Ex iia IIC T80 ... T440 °C Da X][Ex iia IIC T80 ... T440 °C Db X][Ex nA IIC T6 ... T1 Gc X][Ex iia IIC T3 ... T6 Ga][Ex iia IIC T3 ... T6 Ga/Gb][Ex iia IIC T3 ... T6 Gb][Exia IIC T1~~T6Ga][Exia IIC T1~~T6Ga/Gb][Exia IIC T1~T6Gb][Exia IIC T4...T6][Exib IIC T4...T6][II1G Exia IIC T3...T6Ga][II1/2G Exia IIC T3...T6Ga/Gb][II2G Exia IIC T3...T6Gb][II1D Exia IIIC T125...T65℃Da][II1/2D Exia IIIC T125...T65℃Da/Db][II2D Exia IIIC T125...T65℃Db] |
Additional details
| Sensor type | Pt100 |
| Sensor class | A |
| Probe length | 2000 mm |
| Probe diameter | 15 mm |
| Thermowell | Yes |
| Thermowell form | Form B |
| Datasheet languages | EN |
Tables from datasheet
| Logo | Description | Country |
|---|---|---|
| EU declaration of conformity ■ EMCdirective 1) EN 61326 emission (group 1, class B) and immunity (industrial application) | European Union | |
| IECEx (option) - in conjunction with ATEX Hazardous areas - Ex i Zone | International | |
| Zone 21 dust [Ex ia IIIC T125 ...T65 °C Db] EAC (option) Hazardous areas | Eurasian Economic Community | |
| INMETRO (option) Hazardous areas - | Brazil | |
| - Ex n Zone 2 gas [Ex nA IIC T6 ...T1 Gc X] Ex i Zone 0 gas [Ex ia IIC T3 ...T6 Ga] |
| Logo | Description | Country |
|---|---|---|
| NEPSI (option) Hazardous areas - Ex i Zone 0 gas [Ex ia IIC T1 ~ T6 Ga] | China | |
| KCs - KOSHA (option) Hazardous areas - Ex i Zone 0 gas [Ex ia IIC T4 ...T6] Zone 1 gas [Ex ib IIC T4 ...T6] | South Korea | |
| - | PESO (option) Hazardous areas Ex i Zone 0 gas [Ex ia IIC T1 ...T6 Ga] Zone 1 mounting to zone 0 gas [Ex ia IIC T1 ...T6 Ga/Gb] | India |
| DNOP - MakNII (option) Hazardous areas Ex i Zone 0 gas [II 1G Ex ia IIC T3 ...T6 Ga] Zone 1 mounting to zone 0 gas [II 1/2G Ex ia IIC T3 ...T6 Ga/Gb] | Ukraine | |
| GOST (option) Metrology, measurement technology | Russia | |
| KazInMetr (option) Metrology, measurement technology | Kazakhstan | |
| - | MTSCHS (option) Permission for commissioning | Kazakhstan |
| BelGIM (option) Metrology, measurement technology | Belarus | |
| UkrSEPRO (option) Metrology, measurement technology | Ukraine | |
| Uzstandard (option) Metrology, measurement technology | Uzbekistan |
| Logo | Description |
|---|---|
| SIL 2 Functional safety (only in conjunction with model T32 temperature transmitter) | |
| NAMUR | NAMUR NE24 Hazardous areas (Ex i) |
Connection method
| Single elements | 1 x 2-wire 1 x 3-wire 1 x 4-wire |
|---|---|
| Dual elements | 2 x 2-wire 2 x 3-wire 2 x 4-wire 2) |
View all (14)
Accuracy class / Range of use of the sensor per EN 60751
| Class | Sensor construction | |
|---|---|---|
| Wire-wound | Thin-film | |
| Class B | -196 ...+600 °C | -50 ...+500 °C |
| Class A 3) | -100 ...+450 °C | -30 ...+300 °C |
| Class AA 3) | -50 ...+250 °C | 0 ... 150 °C |
| Model | Material | Cable entry thread size | Ingress protection 1) | Cap | Surface |
|---|---|---|---|---|---|
| BS | Aluminium | M20 x 1.5 | IP53, IP65 | Cap with 2 screws | Blue, lacquered 2) |
| BSZ | Aluminium | M20 x 1.5 | IP53, IP65 | Hinged cover with cylinder head screw | Blue, lacquered 2) |
| BSZ-H | Aluminium | M20 x 1.5 | IP53, IP65 | Hinged cover with cylinder head screw | Blue, lacquered 2) |
| Model | Description | Data sheet |
|---|---|---|
| T15 | Digital transmitter, PC configurable | TE 15.01 |
| T32 | Digital transmitter, HART ® protocol | TE 32.04 |
| T53 | Digital transmitter, FOUNDATION Fieldbus and PROFIBUS ® PA | TE 53.01 |
| T91.10 | Analogue transmitter, fixed measuring range | TE 91.01 |
| Connection head | Transmitter model | |||
|---|---|---|---|---|
| T15 | T32 | T53 | T91.10 | |
| BS | - | - | - | - |
| BSZ | - | - | - | - |
| BSZ-H | ● | ● | ● | ● |
Metal thermowell
| Outer diameter | Wall thickness |
|---|---|
| Ø F | s |
| 22 | 2 |
| 15 | 2 |
| Material | AISI | Applicable | Resistance against | |||
|---|---|---|---|---|---|---|
| No. | No. | in air | Sulphurous gases | Nitrogen-containing gases with low oxygen content | Carburisation | |
| up to °C | Oxidising | Reducing | ||||
| 1.0305 | - | 550 | low | slight | medium | slight |
| 1.4571 | 316 Ti | 800 | slight | slight | medium | medium |
| 1.4762 | - | 1,200 | very high | high | slight | medium |
| 1.4841 | 310 / 314 | 1,150 | very slight | very slight | high | slight |
| Material No. | Range of applications |
|---|---|
| 1.0305 (St35.8) | Tempering furnaces for heat treatment plants, galvanising and tinning plants, carbon-dust-air mixture pipelines in steam power stations |
| 1.0305 enamelled (St35.8 enamelled) | Flue-gas desulphurisation plants, babbitt metal, lead and tin smelters |
| 1.4762 X 10 CrAISi 25 | Combustion exhaust gases, cement and ceramic furnaces, heat treatment plants, annealing furnaces |
| 1.4749 X 18 CrNi 28 | Flue gas ducts, annealing furnaces |
| 1.4841 X 15 CrNiSi 25-21 | Combustion chambers, industrial furnaces, petrochemical industry, hot blast stoves, cyanide baths |
| Thermowell | Dimensions inmm | Process connection | |
|---|---|---|---|
| External Ø | Ø f/f 4 | i min. | E |
| 22 | 22.5 | 20 | G1,1G1½ |
| 15 | 15.5 | 20 | G½,G¾,G1 |
| Thermowell | Dimensions inmm | |
|---|---|---|
| External Ø | Ø f/f 4 | C (hole) |
| 22 | 22.5 | 70 |
| 15 | 15.5 | 55 |
| Flange diameter | Material |
|---|---|
| 1 ½inch, 150 lbs, RF | Stainless steel 316 |
| 1 ½inch, 300 lbs, RF | Stainless steel 316 |
| 2 inch, 150 lbs, RF | Stainless steel 316 |
| 2 inch, 300 lbs, RF | Stainless steel 316 |
| 3 inch, 150 lbs, RF | Stainless steel 316 |
| 3 inch, 300 lbs, RF | Stainless steel 316 |
| 4 inch, 150 lbs, RF | Stainless steel 316 |
| 4 inch, 300 lbs, RF | Stainless steel 316 |
Industry
Heating / Utilities
Large heating systems, heat generation
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