Thermocouple for flue gas temperature measurements
Description
These straight thermocouples consist of a form B connection head, a measuring insert in accordance with DIN 43735 and a model TW81 protection tube. In addition to DIN form A or C protection tubes, 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 protection tube 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
Thermocouple for flue gas temperature measurements, model TC81
Protection tube 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 +1,200 °C [+2,192 °F]
- Protection tube from heat-resistant steel
- Measuring insert replaceable
- Gas-tight process connection (option)
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- Thermocouple assembly descriptionHead with measuring insert, no thermowell
- Insert designSpring loaded plate (removable insert)
- Unit of measureMetric (mm)
- Electrical approvalWithout
- Connection headBSZ (Aluminum)
- Cable entryM20 x 1.5
- Head instrument connectionM24 x 1.5
- Terminal block/TransmitterCeramic terminal block
- Element—
- Number of sensors—
- Classification tolerance—
- Measuring pointUngrounded
- Sensor diameter—
- Sheath materialAlloy 600
- A-Dimension0
- CertificatesWithout
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| Model | TC81 |
| Product family | TC |
| Subcategory | Straight thermocouple with protection tube |
| Temperature ranges | −40…+1200 °C |
| Safety integrity level (SIL) | SIL 2 |
| Process connection | Stop flangeThreaded bushingFlange connection welded to protection tube |
| Process temperature | −40…+1200 °C |
| Output signal | HART · PROFIBUS-PA · FOUNDATION Fieldbus |
| Electrical connection | M20 x 1.5 |
| Probe material | Inconel 600 |
| Thermowell material | Steel 1.0305, Steel 1.0305 enamelled, Stainless steel 1.4571, Stainless steel 1.4841, Stainless steel 1.4762 |
| IP rating | IP53 |
| Certifications | RoHSEACGOSTKazInMetrMTSCHSBelGIMUkrSEPROUzstandard |
| Explosion protection | [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 3D Ex tc IIIC TX °C Dc][Ex ia IIC T1 ... T6 Ga][Ex ia IIC T1 ... T6 Ga/Gb][Ex ia IIC T1 ... T6 Gb][Ex ia IIIC T125 ... T65 °C Da][Ex ia IIIC T125 ... T65 °C Da/Db][Ex ia IIIC T125 ... T65 °C Db][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 2G Ex eb IIC T1 ... T6 Gb][II 3G Ex ec IIC T1 ... T6 Gc][II 2D Ex tb IIIC TX °C Db][II 3G Ex nA IIC T1 ... T6 Gc][0 Ex ia IIC T6 ... T1 Ga X][1 Ex ia IIC T6 ... T1 Gb X][Ex ia IIIC T80 ... T440 °C Da X][Ex ia IIIC T80 ... T440 °C Db X][Ex nA IIC T6 ... T1 Gc X][Ex ia IIC T3 ... T6 Ga][Ex ia IIC T3 ... T6 Ga/Gb][Ex ia IIC T3 ... T6 Gb][Ex ia IIC T1 ~ T6 Ga][Ex ia IIC T1 ~ T6 Ga/Gb][Ex ia IIC T1 ~ T6 Gb][Ex ia IIC T4 ... T6][Ex ib IIC T4 ... T6][II 1G Ex ia IIC T3 ... T6 Ga][II 1/2G Ex ia IIC T3 ... T6 Ga/Gb][II 2G Ex ia IIC T3 ... T6 Gb] |
| Sensor type | Type K/J/N |
| Sensor class | Class 1, Class 2 |
| Probe length | 2000 mm |
| Probe diameter | 15 mm |
| Thermowell | Yes |
| Thermowell form | fabricated |
| Datasheet languages | EN |
| Logo | Description | Country | |
|---|---|---|---|
| EU declaration of conformity ■ EMCdirective 1) | European Union | ||
| IECEx (option) - in conjunction with ATEX Hazardous areas | International | ||
| Zone 21 dust [Ex ia IIIC T125 ...T65 °C Db] EAC (option) Hazardous areas - Ex i Zone 0 gas [0 Ex ia IIC T6 ...T1 Ga X] | Eurasian | ||
| Zone 1 gas Zone 20 dust Zone 21 dust - | [1 Ex ia IIC T6 ...T1 Gb X] [Ex ia IIIC T80 ...T440 °C Da X] [Ex ia IIIC T80 ...T440 °C Db X] [Ex nA IIC T6 ...T1 Gc X] | Economic Community | |
| (option) areas - i Zone 0 gas | [Ex ia IIC T3 ...T6 Ga] [Ex ia IIC T3 ...T6 Ga/Gb] [Ex ia IIC T3 ...T6 Gb] [Ex ia IIIC T125 ...T65 °C Da] | ||
| Ex n Zone 2 gas INMETRO Hazardous Ex Zone 1 mounting to zone 0 gas Zone 1 gas Zone 20 dust Zone 21 mounting to zone 20 dust Zone 21 dust | [Ex ia IIIC T125 ...T65 °C Da/Db] [Ex ia IIIC T125 ...T65 °C Db] | Brazil |
| 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) |
| Type | Operating temperatures of the thermocouple | ||
|---|---|---|---|
| IEC 60584-1 | ASTM E230 | ||
| Class 2 | Class 1 | Standard Special | |
| K | -40 ... +1,200 °C | -40 ... +1,000 °C | 0 ... 1,260 °C |
| J | -40 ...+750 °C | -40 ...+750 °C | 0 ... 760 °C |
| N | -40 ... +1,200 °C | -40 ... +1,000 °C | 0 ... 1,260 °C |
View all (14)
| Type | 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 |
|---|---|---|
| T16 | Digital transmitter, PC configurable | TE 16.01 |
| 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 | |||
|---|---|---|---|---|
| T16 | T32 | T53 | T91.10 | |
| BS | - | - | - | - |
| BSZ | - | - | - | - |
| BSZ-H | ● | ● | ● | ● |
| Outer diameter | Wall thickness |
|---|---|
| Ø F | s |
| 22 | 2 |
| 15 | 2 |
| Material | AISI | Can be used | 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 | Range of applications |
|---|---|
| No. | |
| 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 | Exhaust gas ducts, annealing furnaces |
| 1.4841 X 15 CrNiSi 25-21 | Combustion chambers, industrial furnaces, petrochemical industry, hot blast stoves, cyanide baths |
| Material | Range of applications | |
|---|---|---|
| No. | ||
| 1.0305 | Babbitt metal | to 600 °C |
| Lead | to 700 °C | |
| Tin | to 650 °C | |
| 1.4841 | Aluminium | to 700 °C |
| Lead | to 700 °C | |
| Copper-zinc alloy | to 900 °C | |
| 1.4762 | Zinc | to 480 °C |
| Copper | to 1,250 °C |
| Protection tube | 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 |
| Protection tube | 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 |
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