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A thermocouple is a temperature sensor widely used in various industries and applications to measure temperature. It operates based on the Seebeck Effect, which generates a voltage when two dissimilar metals are joined together and exposed to a temperature gradient. This voltage is proportional to the temperature difference, allowing for accurate temperature measurement.
Type S thermocouples are constructed using one wire of 90% Platinum and 10% Rhodium (the positive or
"+" wire) and a second wire of 100% platinum (the negative or "-" wire). Like type R, type S thermocouple
are used up to 1600 °C.
Type B thermocouples use a platinum-rhodium alloy for each conductor. One conductor contains 30%
rhodium while the other conductor contains 6% rhodium. These thermocouples are suited for use at up
to 1800 °C. Type B thermocouples produce the same output at 0 °C and 42 °C, limiting their use below
about 50 °C.
| Size | type | temperature | Accuracy | Length |
| WRR | B | 0~1800 | ±1.5ºC | 70 |
| WRP | S | 0~1600 | ±1.5ºC | 85 |
| WRQ | R | 0~1600 | ±1.5ºC | 90 |
| wire diameter | 0.15mm or customized | 95 | ||
| tube diameter | 8mm or customzied | 120 | ||
Types of Thermocouples
Thermocouples are classified by the types of metals used, which determine their temperature range, accuracy, and application suitability. Common types include:
| Type | Materials | Temperature Range | Applications |
|---|---|---|---|
| Type K | Chromel (Ni-Cr) / Alumel (Ni-Al) | -200°C to 1260°C (-328°F to 2300°F) | General-purpose, industrial, and laboratory use. |
| Type J | Iron / Constantan (Cu-Ni) | -40°C to 750°C (-40°F to 1382°F) | Older equipment, limited oxygen environments. |
| Type T | Copper / Constantan (Cu-Ni) | -200°C to 350°C (-328°F to 662°F) | Low-temperature applications, cryogenics. |
| Type E | Chromel (Ni-Cr) / Constantan (Cu-Ni) | -200°C to 900°C (-328°F to 1652°F) | High-output, low-temperature applications. |
| Type N | Nicrosil (Ni-Cr-Si) / Nisil (Ni-Si-Mg) | -270°C to 1300°C (-454°F to 2372°F) | High-temperature applications,Type K. |
| Type S | Platinum-Rhodium (Pt-Rh) | 0°C to 1450°C (32°F to 2642°F) | High-temperature applications (e.g., furnaces). |
| Type R | Platinum-Rhodium (Pt-Rh) | 0°C to 1450°C (32°F to 2642°F) | Similar to Type S, but with slightly different composition. |
| Type B | Platinum-Rhodium (Pt-Rh) | 0°C to 1700°C (32°F to 3092°F) | Extremely high-temperature applications. |
Advantages of Thermocouples
Wide Temperature Range: Can measure from cryogenic temperatures to extremely high temperatures.
Durability: Robust and suitable for harsh environments.
Fast Response Time: Quickly reacts to temperature changes.
Simple Design: No external power source required.
Cost-Effective: Relatively inexpensive compared to other temperature sensors.
Product Advantage
1) High wear resistance: the alloy system commonly used in international wear resistant composite
steel plate has excellent wear resistance and grain wear performance
2) Impact resistance: The substrate of wear-resistant composite steel plate adopts low carbon steel
plate with good plasticity, which can absorb energy in the process of impact
3) Easy to process: Wear-resistant composite steel plate can be made into standard size plate, light
weight, convenient and flexible processing,
4) High performance-to-price ratio: the cost of manufacturing parts with wear-resistant composite steel
plate is higher than that of ordinary materials
Applications of Thermocouples
Industrial Processes:
Monitoring temperatures in furnaces, kilns, and reactors.
Controlling temperatures in manufacturing processes.
HVAC Systems:
Measuring air and fluid temperatures in heating and cooling systems.
Automotive:
Monitoring exhaust gas temperatures (EGT) and engine temperatures.
Food Industry:
Ensuring proper temperatures during cooking, storage, and processing.
Scientific Research:
Used in laboratories for precise temperature measurements.
Aerospace:
Monitoring temperatures in engines and other critical systems.
Taizhou Best electric heating appliance Co., Ltd. was established in 2 0 1 4 year. It is a
comprehensive company integrating production, sales and technical service. the factory covers an
area of 5000m2,has nearly 100+employees.have obtained ISO9001, CQC,CE,ROHS certifications.
Main products : cartridge heater,Tubular heater, Flexible heater, cartridge heater,silicone heater
thermocouple, heating element, and other heating products. The factory introduced advanced
automatic control system and online quality,inspection system to ensure the stability and reliability
of product quality
1. Qucik Response:Your inquiry will be replied within 24 hours. Response Rate over 90%
2. Smooth Communication: Well-trained and experienced staffs to answer all your inquires.
3. Sincere Service Attitude: Treat Customers As Friends. No Questions are Neglected.
4. OEM Accepted: Free Sample,We can customize your products to meet all your different requests.
5. Small MOQ: Small Amount wholesales are supported to meet your needs as well as large demands.
6. Fast Delivery: We have Reliable Forwarders with long term cooperation and Competitive Price.
You may contact any one of our sales and services team: email to us as inquiry.
