Product description:

Summary

As the temperature measurement and control of the sensor and the display of the instrument to complete the measurement and control of the production process of gas, liquid and steam temperature.

I plant the production of special chemical explosion-proof performance of thermocouple products according to the national “ explosive environment with &rdquo explosion-proof electrical equipment; standard design and manufacture, the thermoelectric properties in line with international IEC standards, and by the National Instruments explosion-proof safety supervision station test qualified.

Explosion proof thermocouple, structure, principle and assembly method of thermal resistance is basically the same, the main difference is the explosion-proof junction box product (shell) used in the design of high strength Aluminum Alloy die casting, and has sufficient internal space, wall thickness and mechanical strength, thermal stability of rubber sealing ring are in line with National standards. So when the explosive gas mixture inside the enclosure when the explosion occurred, the internal pressure will not destroy the junction box, and the resulting heat is not the outward diffusion of detonation. As long as the user, strictly abide by the rules of use products, products can achieve reliable explosion-proof effect.

Characteristic

Pressure spring type temperature sensor, good vibration resistance;

High measuring accuracy;

No compensation wire, cost savings;

Imported thin film resistors, reliable and stable performance.

Working principle

Explosion-proof thermal resistance is the use of gap explosion-proof junction box component design principle, with sufficient strength, all can produce a spark, arc and dangerous temperature components are sealed in a box cavity, when the cavity when the explosion occurred, the joint gap flameout and cooling, so that the explosion flame temperature and not to outside of the cavity, thereby flameproof.

Main technical parameters

Product executive standard

IEC751

JB/T18622-1997

JB/T8623-1997

JB/T5518-91

Normal temperature insulation resistance

The thermal resistance in the ambient temperature is 15— 35° C, the relative humidity is not more than 80%, the test voltage is 10— 100V (DC) electrode and the insulation resistance between the outer tube >100MΩ.

Measuring range and tolerance

Allowable error of precision range of temperature range

WZP Pt100 -200-+500 class A; ± (0.15+0.002) LTL

B class ± (0.30+0.005) LTL

WZC Cu50 Cu100 -50-+100 (±); LTL (0.30+0.005)