Temperature sensors for furnaces, kilns and process lines in Odisha & Chhattisgarh
Pt100 RTDs and thermocouples, with thermowells, heads and transmitters, chosen for the temperature, response and environment.
- Pt100 RTDs
- Thermocouples
- Thermowells
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Temperature is the most measured variable in steel, sponge iron, ferro-alloy, power and cement plants. From bearing and winding temperatures on large motors to kiln shells, flue gas and furnace zones, the right sensor gives stable readings for years; the wrong one drifts, burns out or responds too slowly.
We supply RTD and thermocouple temperature sensors with matching thermowells and transmitters for plants in Odisha and Chhattisgarh. Tell us the temperature, medium and installation, and we specify element type, sheath material, length and connection.
Where it is used
- Reheating and annealing furnaces
- Sponge iron kilns and coolers
- Boiler flue gas and steam lines
- Motor bearing and winding temperature
- Transformer and lube oil systems
- Cement kiln and preheater zones
Key benefits
Pt100 RTDs
Accurate, stable sensing for process temperatures up to a few hundred degrees.
Thermocouples
Types K, J, N, R, S and B for high-temperature furnaces and kilns.
Thermowells
Protective wells so sensors can be replaced without draining the process.
4–20 mA transmitters
Head or rail-mounted transmitters for long cable runs to the PLC.
RTD or thermocouple: typical ranges
| Sensor | Typical range (approx.) | Typical uses |
|---|---|---|
| Pt100 RTD | -200 °C to about 600 °C | Bearings, windings, lube oil, water, process liquids |
| Type J thermocouple | Up to about 750 °C | Older equipment, moderate temperatures |
| Type K thermocouple | Up to about 1,200 °C | Furnaces, flue gas, kilns, general high temperature |
| Type N thermocouple | Up to about 1,250 °C | Where better stability than type K is needed |
| Type R / S thermocouple | Up to about 1,600 °C | Reheating furnaces, glass and high-temperature zones |
| Type B thermocouple | Up to about 1,700 °C | Very high-temperature furnaces |
Practical limits depend on sheath material, wire diameter and atmosphere. Noble metal thermocouples (R, S, B) need ceramic protection tubes in furnace atmospheres.
Selection guide
- Accuracy and stability: RTDs are more accurate and stable at lower temperatures; thermocouples cover higher ranges and respond faster.
- Sheath and protection: SS 316 for general use, Inconel for higher temperatures, ceramic for furnaces; add a thermowell for pressurised or flowing media.
- Insertion length: the tip must sit in the representative flow, with enough immersion to avoid heat loss along the stem.
- Connection: process thread or flange, terminal head type and cable entry.
- Signal: use correct thermocouple compensating cable, or a head-mounted 4–20 mA transmitter for long runs and noisy areas.
In dusty and high-vibration areas, such as kiln drives and crushers, use spring-loaded sensors in thermowells for good thermal contact, and armoured cables or conduit for protection. Where a sensor sits in a hot zone, keep the terminal head and transmitter away from radiant heat, or use a remote-mounted transmitter.
What to send us for a quote
Measured medium and maximum temperature, pressure and flow velocity if in a pipe, sensor type preferred, sheath diameter and insertion length, process connection, head and cable entry, transmitter requirement and quantity. For replacements, send photographs and dimensions of the existing sensor.
Need help choosing?
Send us your application, duty and site conditions. We recommend the right model and quote with delivery to your plant.
Related
Temperature Sensor: questions buyers ask
Straight answers to the questions plant teams ask us most.
Should we use a Pt100 or a thermocouple for a bearing?
A Pt100 RTD is the usual choice for bearings and motor windings, as the temperatures are moderate and accuracy matters for alarm and trip settings.
Why does our type K thermocouple drift in the furnace?
Type K can drift at high temperatures, especially in reducing atmospheres or with thin wires. Consider type N, a heavier wire gauge, better protection tubes or a noble metal thermocouple for the hottest zones.
Do we need a thermowell?
For pipes, tanks and pressurised or flowing media, yes. A thermowell protects the sensor and lets you replace it without draining or shutting down the process.
Can we use ordinary copper cable for thermocouple extension?
No. Use the matching thermocouple extension or compensating cable for the thermocouple type, or convert to 4–20 mA at the sensor head with a transmitter.
What is the difference between 2-wire, 3-wire and 4-wire RTDs?
The extra wires compensate for lead resistance. 3-wire is the common industrial standard; 4-wire gives the best accuracy for precise measurements.
How fast does a temperature sensor respond?
Response depends on sheath diameter, thermowell thickness and medium. Thinner sensors and smaller thermowells respond faster but are less robust.
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View detailsSpecify the right temperature sensor
Send the temperature, medium and installation details, and we will recommend a sensor with a quotation.