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Explosion proof thermistor

NegotiableUpdate on 01/24
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Overview
Explosion proof thermistor
Product Details

ZY Explosion proof Thermistor

industrialExplosion proof thermistorAs a sensor and display instrument for temperature measurement and control, it is used to directly measure and control the temperature of gases, liquids, and vapors in the production process.
Our company's chemical specific explosion-proof thermocouples and explosion-proof resistance products are designed and manufactured according to the national standard of "Explosion proof Electrical Equipment for Explosive Environments" for explosion-proof performance. Their thermoelectric characteristics comply with international IEC standards and have been tested and qualified by the National Instrument Explosion proof Safety Supervision StationThe structure, principle, and assembly method of explosion-proof thermocouples and explosion-proof thermistors are basically the same. The main difference is that the explosion-proof product junction box (housing) is designed with high-strength aluminum alloy die-casting, and has sufficient internal space, wall thickness, and mechanical strength. The thermal stability of the rubber sealing ring meets national explosion-proof standards. So 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 diffuse outward - the explosion cannot be transmitted As long as users strictly follow the product usage rules, explosion-proof thermistor products can achieve reliable explosion-proof effects.

characteristic
Pressure spring type temperature sensing element with good anti vibration performance;
High measurement accuracy;
No need to compensate for wires, saving costs;
Imported thin film resistor components with reliable and stable performance.

Working principle
Explosion proof thermistorIt is based on the principle of gap explosion prevention 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 cavity. When an explosion occurs inside the cavity, it can be extinguished and cooled through the gap between the joint surfaces, so that the flame and temperature after the explosion cannot be transmitted outside the cavity, thus achieving explosion prevention.

Main technical parameters

Product execution standards
IEC751
JB/T18622-1997 JB/T8623-1997 JB/T5518-91
Room temperature insulation resistance
Explosion proof thermistorAt an ambient temperature of1535°CThe relative humidity is not greater than80%The test voltage is10100VInsulation resistance between (DC) electrode and outer sheath>100MΩ.

Measurement range and tolerance

model
Graduation
Measuring range
accuracy class
Allowable error
WZP
Pt100
-200-+500
Alevel
±(0.15+0.002) ltl
Blevel
±(0.30+0.005) ltl
WZC
Cu50 Cu100
-50-+100
---
±(0.30+0.005) ltl

Model naming convention