Handle type thermocouples, also known as handheld thermocouples, are designed to measure the surface temperature of solid media of various shapes, as well as the temperature of liquids and gases. Handle type thermocouples have a wide range of applications and are not limited by the shape of the object surface. They are lightweight in appearance and easy to carry. Due to their small diameter, bendability, vibration resistance, fast thermal response time, and high reliability, handle type thermocouples can be used in conjunction with digital display devices to directly measure and display the temperature of various media within the range of 0-1200 ℃ in different production processes. They are widely used in industrial sectors and enterprises such as metallurgy, chemical industry, textile, printing and dyeing, papermaking, rubber, plastics, ceramics, and grain storage.
Model | Graduation | Temperature measurement range ℃ | Thermal response time t0.5s | Protective tube material |
WREK-181 | E | 0-400 | <5 | stainless steel 1Cr18Ni9Ti |
WRNK-181 | K | 0-1200 | <5 | stainless steel 1Cr18Ni9Ti |
Thermal response time of handle type thermocouple:
When there is a step change in temperature, the time required for the output of the thermocouple to change to 50% of the step change is called the thermal response time, represented by τ 0.5.
The thermal response time shall not exceed the specifications in the following table:
Thermal response time τ 0.5S | Shell type | Insulated type |
Diameter of casing (mm) | ||
2 | 0.4 | 0.5 |
3 | 0.6 | 1.2 |
4 | 0.8 | 2.5 |
5 | 1.2 | 4 |
6 | 2 | 6 |
8 | 4 | 8 |
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