Industrial explosion-proof temperature sensors are used as sensors and display instruments for temperature measurement and control, 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.
| 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. |
| Explosion proof thermistor 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 cavity. When an explosion occurs inside the cavity, 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 cavity, thus achieving explosion-proof. |
| Main technical parameters |
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Product execution standards
IEC751 JB/T18622-1997 JB/T8623-1997 JB/T5518-91
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| Room temperature insulation resistance |
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| Explosion proof thermistor operates at an ambient temperature of15—35°CThe relative humidity is not greater than80%The test voltage is10—100VInsulation resistance between (DC) electrode and outer sheath>100MΩ. |
| Measurement range and tolerance |
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model
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Graduation
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Measuring range
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accuracy class
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Allowable error
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ZRN-WZFP
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Pt100
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-200-+500
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Alevel
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±(0.15+0.002) ltl
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Blevel
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±(0.30+0.005) ltl
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ZRN-WZFC
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Cu50 Cu100
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-50-+100
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---
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±(0.30+0.005) ltl
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Model naming convention
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select Type outside
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ZRN-WZF
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Explosion proof temperature sensor
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T□
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1=-50~100 2=-50~200 3=-50~250 specified
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Temperature range (℃)
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P□
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5=0.5% 2=0.2% 1=0.1%
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sensor accuracy
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V□
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1=pt00 2=4～20mA 3=0-5V 4=RS485
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output signal
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100=100 150=150 350=350
550=550 600=600
appoint
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Total length of protective tube (mm)
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D□
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4=4 8=8 12=12 16=16 specified
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Diameter of protective tube (mm)
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S□
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1=SUS321 4=SUS304 6=SUS316 specified
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N□□
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A=No connection
B=Threaded connection, no cold end
C=threaded connection with cold end
D=Card sleeve threaded connection
E=Active flange connection
F=Fixed flange connection
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Please refer to the thread and flange specification table for details
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Process connection type
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G□
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1=Isolation explosion-proof type
2=Intrinsic safety explosion-proof type
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Explosion proof type
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Z□
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0=None, can be left blank
2=Armored type
3=Anti corrosion treatment
appoint
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special requirements
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notes：For user specified parameter requirements, simply indicate them with numbers or text.
Example of Selection：ZRN-WZF-T2-P5-V1-C350/D8/S4 NCM16-G1
describe:Temperature measurement range -50~200 ℃, accuracy 0.5%, protective tube diameter 8mm, output 4-20mA, total length of protective tube 350mm,
Thread specification M16 × 1.5 isolated explosion-proof type
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