Two chamber explosion-proof thermocouple

Two chamber explosion-proof thermocoupleThe working principle of

If a closed circuit is composed of two homogeneous conductors (thermoelectric electrodes) with different compositions, when there is a temperature gradient at both ends, current flows through the circuit, and there is a thermoelectric potential between the two ends (as shown in the figure on the right)

Explosion proof original utilizes the principle of gap explosion-proof to design junction boxes and other components with sufficient strength. All components that can generate sparks, arcs, and dangerous temperatures are sealed inside the junction box. When an explosion occurs inside the chamber, it can be extinguished and cooled through the gap between the joint surfaces, preventing the flame and temperature after the explosion from being transmitted outside the chamber.

The main technical parameters of the thermocouple include an ambient temperature of 20 ± 15 ° C, a relative humidity of no more than 80%, and a test voltage of 500 ± 50V (DC). The insulation resistance between the electrode and the outer sleeve is greater than 1000 Ω. m

Two chamber explosion-proof thermocoupleFeatures:

1. Design according to the explosion-proof regulations GB3836 that comply with IEC standards;
2. Adopting a two chamber explosion-proof structure, it is easy to replace temperature measuring elements and safe and reliable to use
3. Explosion proof mark d Ⅱ CT6, suitable for temperature measurement in environments with Class IIC or below, ignition temperature T6 or above, and containing explosive gases.

classification

Ordinary explosion-proof thermocouple, thermistor
Design according to the explosion-proof specification GB3836 that complies with IEC standards.
Adopting a two chamber explosion-proof structure, it is easy to replace temperature measuring elements and safe and reliable to use.
Explosion proof mark d Ⅱ BT4, suitable for temperature measurement in places with explosive gases below grade IIB, ignition temperature T4 or above.

Armored explosion-proof thermocouple, thermistor
The protective tube and measuring element are separated structures, allowing for quick replacement of temperature measuring elements and non-stop repair.
There are various forms and materials of protective tubes that can meet the temperature measurement needs of high-pressure, high-temperature, and strongly corrosive media.
Adopting armored components, it is pressure resistant, earthquake resistant, and operates stably and reliably.
Explosion proof signs d Ⅱ BT4, ia Ⅱ CT4, suitable for temperature measurement in environments with explosive gases below level II, ignition temperature T4 or above.
Types of explosion-proof thermocouples: K-type explosion-proof thermocouple, K-type explosion-proof wear-resistant thermocouple, E-type explosion-proof thermocouple, multi-point explosion-proof thermocouple, multi-point explosion-proof assembly thermocouple, multi-point explosion-proof armored thermocouple, explosion-proof armored thermocouple, explosion-proof type thermocouple, explosion-proof armored thermocouple, explosion-proof corrosion-resistant thermocouple, etc.

Selection Instructions for Explosion proof Thermocouples

1) Model number

2) Dividing number

3) Explosion proof grade

4) Accuracy level

5) Installation fixed form

6) Material of protective tube

7) Length or insertion depth

Example: Explosion proof thermocouple, Pt100 type, fixed thread M27 × 2, explosion-proof grade dIIBT4, protective tube 316, insertion depth 300mm. Model WZP-240, Pt100, dIIBT4, thread M27 × 2, protective tube 316, L=450 × 300mm.