Explosion-proof thermocouple

product manual:

       Overview

       Industrial explosion-proof thermocouples and thermal resistances are used as temperature measurement and control sensors and display instruments to directly measure and control the temperature of gas, liquid and steam in the production process.

       The explosion-proof performance of our chemical-specific explosion-proof thermocouples and thermal resistance products are designed and manufactured according to the national standard for "explosion-proof electrical equipment for explosive environments". The thermoelectric characteristics meet the international IEC standards and have been tested by the National Instrument and Meter Explosion-proof Safety Supervision Station. .

       The structure, principle and assembly method of flameproof thermocouple and thermal resistance are basically the same. The main difference is that the flameproof product junction box (shell) is made of high-strength aluminum alloy die-cast in design, and has sufficient internal space, wall thickness and The mechanical strength and thermal stability of the rubber sealing ring are in line with national explosion-proof standards. Therefore, when the explosive gas mixture inside the junction box explodes, its internal pressure will not damage the junction box, and the resulting heat energy cannot be diffused outwards—detonation. As long as the user strictly abides by the product usage rules, the product can achieve reliable explosion-proof effects.

       Features

       Various explosion-proof forms, good explosion-proof performance;

       Compression spring type temperature sensing element, good anti-vibration performance;

       Large temperature measurement range;

       High mechanical strength and good pressure resistance;

       working principle

       Explosion-proof thermocouples use the principle of gap explosion-proof, design the junction box and other components with sufficient strength, and seal all the low parts that produce sparks, arcs and dangerous temperatures in the junction box cavity. When an explosion occurs in the cavity, it can pass The joint surface gap is extinguished and cooled, so that the flame and temperature after the explosion can not be transmitted to the outside of the cavity, thereby preventing explosion.

       The main technical parameters

       Product performance standards

       IEC584

       IEC1515

       GB/T16839-1997

       JB/T5582-91

       GB3836

       Normal temperature insulation resistance

       The temperature of the thermocouple is 20±15°C, the relative humidity is not more than 80%, and the test voltage is 500±50V (DC). The insulation resistance between the electrode and the outer tube is >1000Ω.m

       Measuring range and tolerance