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Brand: WIKA
WIKA TC82 High-Temperature Thermocouple with Purge
Description
WIKA TC82 high-temperature thermocouple with purge connection
The WIKA TC82 is a high-temperature thermocouple designed for hazardous process duty, above all sulphur recovery units and other reactors where toxic gas must not leak out and the thermocouple must not be poisoned. It uses a ceramic or silicon-carbide protection tube, with or without a second inner tube, and offers an optional flushing (purge) connection so a clean gas can be run through the tube to prolong life. WIKA states high process safety for processes up to 1,700 °C. Seven Star LLC supplies the TC82 in Oman and the GCC as an independent supplier in Muscat; the tables below help you specify tube material, head and options.
Why the TC82 exists
In sulphur recovery and some chemical or petrochemical reactors, normal protection tubes fail early from thermal shock and from attack by process gas, and every unplanned stop is expensive. The TC82 combines a hermetically sealed junction, which keeps toxic media in the reactor, with a high-quality ceramic or silicon-carbide tube and an optional purge system. The datasheet lists a high variety of thermowell and protection tube materials, plus versions with a temperature transmitter or field transmitter.
TC82 technical specifications
| Parameter | Specification |
|---|---|
| Manufacturer / part number | WIKA / TC82 (data sheet TE 65.82) |
| Type | High-temperature thermocouple with optional purge system |
| Sensor types | K, J, E, R, S, B per IEC 60584-1 or ASTM E230 |
| Inner protection tube | Ceramic, 15 x 2 … 2.5 mm (others on request); C530 1,600 °C, C610 1,500 °C, C799 1,600 °C |
| Outer protection tube | Diameter 24 … 26 mm; C530 and C799 up to 1,600 °C, silicon carbide (Hexoloy) up to 1,650 °C |
| Maximum in air | Up to 1,700 °C for the ceramic protection tube |
| Insertion length U | 300 … 1,000 mm [11.8 … 39.4 in]; others on request |
| Measuring tip | Welded thermocouple, insulation rod, with outer and optional inner tube |
| Process connection | Flange EN 1092-1 DN40 … DN100; others on request |
| Purge connection | ¼ NPT, supports flushing; minimum 300 mm length noted for purge connection |
| Pressure limitation | Maximum 1.5 bar [22 psi] |
| Cable entry | M20 x 1.5 and other thread sizes |
| Ambient and storage temperature | -40 … +80 °C; -60 °C optional |
| Functional safety | SIL 2 with TUV-certified T38 in selected combinations; SIL 3 with two thermocouples and a certified T38 |
Variants of the TC82 assembly
| Variant | Arrangement | Typical reason |
|---|---|---|
| Basic module (TC82-M) | Thermocouple in protection tube without head transmitter | Direct thermocouple wiring |
| Variant 1 (TC82-F) | Head and terminal block, no transmitter | Standard installation |
| Variant 2 (TC82-F) | Head with built-in transmitter | Signal conversion close to the process |
| Variant 3 (TC82-F) | Field transmitter fitted | Local indication and long cable runs |
Tube selection: ceramic or silicon carbide
The materials table lets you match the tube to the atmosphere. C799 and C530 ceramics are listed to 1,600 °C, C610 to 1,500 °C, and Hexoloy silicon carbide to 1,650 °C as an outer tube. Silicon carbide handles thermal shock better, but its choice should consider the gas chemistry. Keep in mind that the upper operating temperature in air up to 1,700 °C applies to the ceramic tube and that other process gases lower it. For a thermocouple of type R, S or B in a hydrogen-containing or sulphur-containing gas, the inner tube is what keeps the noble metal from being attacked, so do not omit it when the process asks for it.
Purge system and process safety
A purge connection of ¼ NPT lets a clean gas flow around the thermocouple so process gas cannot reach the wires, which is why WIKA says it prolongs life. The sealing between the tube and the head is designed to prevent toxic media from escaping the reactor if a tube cracks. The pressure limit of 1.5 bar means that this thermometer is for low-pressure furnace and reactor service; for high-pressure reactors, the TC84 is the relevant model.
Explosion protection options
The datasheet lists flameproof Ex db for zone 1 (II 2/-G Ex db IIC T6 … T1 Gb/-) and intrinsically safe Ex ia for gas and dust in zone 21, with IECEx equivalents and other country options. Always confirm which head, which approval and which gland are combined in your specification.
Installation and operation
- Heat up and cool down at the controlled rate recommended for the ceramic tube
- Support the tube in the correct orientation and avoid side load on the flange
- Set the purge flow and pressure as per your process engineering, and monitor the purge supply
- Use extension or compensating cable that matches the thermocouple type, or a head transmitter
- Plan periodic replacement and a spare tube set based on the process life seen so far
Applications in Oman and the GCC
The TC82 is a fit for sulphur recovery units at gas-processing plants and refineries, thermal reactors, and chemical and petrochemical units with high-temperature hazardous process gas. Regional gas plants with high hydrogen sulphide levels are a natural application, where reactor shutdowns for thermocouple replacement are costly.
TC82 ordering checklist
- Thermocouple type (R, S or B for the highest range) and class
- Inner and outer tube material, diameters and insertion length
- Process flange (EN 1092-1 size and rating) and support tube length
- Purge connection and purge gas
- Head or field transmitter, output and SIL requirement
- Hazardous-area marking and calibration certificate
Information to send with an RFQ
Provide the reactor type, process gas composition, temperature profile, pressure, flange drawing and approvals. Past tube failures help us recommend the material to discuss.
Documents and quotation
The WIKA data sheet TE 65.82 for the TC82 is attached on this page. Send us the specification and quantity for a quotation from Muscat as an independent supplier.
Other Models in the Wika Tc8x Range
Seven Star LLC supplies models from the Wika Tc8x range in Oman and the GCC. Compare the related models below and request a quote for the one that matches your application.
| Model | Category | |
|---|---|---|
| WIKA TC80 High-Temperature Thermocouple, DIN 50446 | Temperature Instrumentation | View details |
| WIKA TC82 High-Temperature Thermocouple with Purge | Temperature Instrumentation | You are viewing this model |
Datasheets & Documents
- Datasheet WIKA TC82 Datasheet Download
Reviews (0)
About brand
WIKA is the German manufacturer of pressure, temperature, level and flow instruments, best known for its pressure gauges. Alexander Wiegand and Philipp Kachel founded it on 2 January 1946 in Klingenberg am Main, Bavaria. The name comes from the first two letters of their surnames. WIKA is still run by the Wiegand family and is headquartered in Klingenberg.
Seven Star LLC is an independent supplier in Muscat. We list WIKA pressure gauges, diaphragm seals, transmitters, switches, thermometers and thermowells, and supply them to plants, contractors and panel builders in Oman and the GCC by model and order code.
WIKA company profile
| Established | 2 January 1946, Klingenberg am Main, Germany, by Alexander Wiegand and Philipp Kachel |
|---|---|
| First products | Mechanical pressure and temperature gauges |
| Ownership | Family-owned; managed by Alexander Wiegand, grandson of the founder, since 1996 |
| Product families | Pressure gauges, diaphragm seals, pressure transmitters and switches, thermometers, RTDs, thermocouples, thermowells, calibration equipment, level and flow instruments |
Milestones
- 1946: Alexander Wiegand and Philipp Kachel found the company in Klingenberg am Main on 2 January; pressure gauge production starts at the end of the year. The name WIKA comes from the first letters of their surnames.
- 1951: Konrad Wiegand, the founder's son, takes over management.
- 1967: Ursula Wiegand leads the company after her husband's death.
- 1986: The company is reunited with the Kachel thermometer factory, which Philipp Kachel had set up after leaving in 1956.
- 1994: Certification to DIN ISO 9001.
- 1996: Alexander Wiegand, the founder's grandson, becomes head of the company.
WIKA products we list
| Family | Models | Typical use |
|---|---|---|
| Bourdon tube pressure gauges | 111.10, 111.12, 212.20, 213.53, 232.50, 233.50, 232.30/233.30 safety pattern | HVAC and utilities (111 series) to process plants (23x series in stainless steel) |
| Diaphragm and differential pressure gauges | 432.50, 732.51, 700.01, DPGT43 | Low pressures, viscous or dirty media, and filter differential pressure |
| Diaphragm seals | 990.10, 990.27 | Separating the gauge from corrosive, hot or clogging media |
| Transmitters, switches and test gauges | A-10, UPT-20, PSM01, CPG1500 | 4-20 mA pressure signals, switching, and precision calibration checks |
| Thermometers | TG54, Model 55, A52, 73 gas-actuated | Local temperature indication on pipes, vessels and HVAC |
| Temperature sensors and thermowells | TR10, TR12-B, TR33, TC10-B, TW10 flanged, TW15 threaded | RTD and thermocouple measurement in process lines |
The WIKA model number tells you the build. In 232.50, the first digit 2 means stainless steel wetted parts, the second digit 3 means a liquid-fillable case, and ".50" is the case style. The 111 series uses copper alloy wetted parts and suits water and air. Where the medium is corrosive, very hot or would block the gauge, a diaphragm seal such as the 990.27 keeps it away from the Bourdon tube. For temperature, a thermowell like the TW10 lets you remove the sensor without opening the process.
Where WIKA instruments are used
In Oman and the GCC, WIKA gauges, transmitters and thermometers are used in oil and gas, refining and petrochemical plants, power and desalination, water networks, district cooling and HVAC, and on skids and machines from OEMs.
Ordering WIKA instruments: what we need
Send the model, dial size (for example 63, 100 or 160 mm), range and unit, connection size and position (lower or back mount), accuracy class and whether liquid filling is needed. For diaphragm seals and thermowells, add the process connection, materials and insertion length.
Facts checked against WIKA company history, October 2026.
Browse WIKA products by category: Pressure Instrumentation, Temperature Instrumentation.
FAQ
Questions about the WIKA TC82 High-Temperature Thermocouple with Purge
Answers from our engineering team on installation, compatibility and integration.
01What is the TC82 designed for?
It is designed for hazardous high-temperature processes such as sulphur recovery units and petrochemical reactors, where toxic gas must stay in the process and the sensor must be protected.
02What does the purge connection do?
It allows a clean gas to be flushed through the protection tube to protect the thermocouple from poisoning by the process atmosphere and to prolong its life.
03What are the tube materials?
Inner ceramic tubes C530, C610 and C799 and outer tubes in C530, C799 or silicon carbide (Hexoloy), with temperature limits between 1,500 and 1,650 degrees C.
04What pressure can it handle?
The datasheet gives a pressure limitation of 1.5 bar, so it is meant for low-pressure furnace and reactor service.
05Is functional safety supported?
Selected versions with a TUV-certified T38 transmitter are suitable for SIL 2, and two thermocouples with one certified T38 are recommended for SIL 3.
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