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  • Anhui Jiuyue Instrument Co., Ltd. mainly produces armored thermocouple, wear-resistant thermocouple, platinum rhodium thermocouple, K-type thermocouple, S-type thermocouple, B-type thermocouple, hot sleeve thermocouple, wear-resistant cut-off thermocouple, handle type armored thermocouple, integrated thermocouple, hand-held thermocouple, explosion-proof thermocouple, wear-resistant thermal resistance, armored thermal resistance, explosion-proof thermal resistance, end thermal resistance , thermal sleeve type thermal resistance, handle type thermal resistance, integrated on-site display thermal resistance, assembled thermal resistance, bimetal thermometer, remote transmission bimetal thermometer, electric contact bimetal thermometer, shock resistant bimetal thermometer, explosion-proof bimetal thermometer, integrated bimetal thermometer, shock resistant electric contact bimetal thermometer, anti-corrosion bimetal thermometer, pressure gauge and pressure transmission Instrument, flowmeter, vortex flowmeter, electromagnetic flowmeter, turbine flowmeter, tube rotameter, orifice flowmeter, liquid level meter, magnetic turnover plate liquid level meter, glass tube plate liquid level meter, double color quartz tube liquid level meter, valves, etc.), wires and cables (control cable, power cable, electrical equipment cable, silicone rubber cable, computer cable, compensation wire, etc.)
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(热电偶)thermocouple
(热电阻)thermal resistance
(双金属温度计)bimetallic thermometer
(压力表)pressure gage
(压力变送器)pressure transmitter
(温度变送器)temperature transmitter
(数字显示调节仪)Digital display regulator
(补偿导线、电缆)The compensation wire ( cable )
(特种电缆)Special cable
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Anhui Jiuyue Instrument Co., Ltd
name:Dai Hongyu
Phone:15551035688
Tel:0550-7514987 15551035688
Fax:0550-7514987
Address:Anhui province Tianchang City Station Road, No. 87
Website:http://swznjx.com
Email:dhy@swznjx.com
 
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Explosion-proof thermocouple
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产品名称:

Explosion-proof thermocouple

产品型号: WRN-241D/NN, WRN-341/NN etc.
产品特点: Explosion-proof thermocouple
Explosion-proof thermocouple详细资料:

Explosion-proof thermocouple

Product Name:




Explosion proof thermocouple





Product model:



Wrn-241d / NN, wrn-341 / NN, etc





Product features:



It has many kinds of explosion-proof forms, good explosion-proof performance, spring-loaded temperature sensor, good vibration resistance, wide temperature measurement range, high mechanical strength and good pressure resistance;











Explosion proof thermocouple details:







Product introduction:



1、 Overview



Industrial flameproof thermocouple and thermal resistance are used as sensors for temperature measurement and control, which are matched with display instruments to directly measure and control the temperature of gas, liquid and steam in the production process. The explosion-proof performance of explosion-proof thermocouples and thermal resistance products produced by our company are designed and manufactured according to the standard of "explosion-proof electrical equipment for explosive environment" issued by the state. The thermoelectric characteristics conform to the international IEC standard, and have passed the test of national instrument explosion-proof safety supervision station The structure, principle and assembly method of thermal resistance are basically the same. The main difference is that the junction box (shell) of explosion-proof product is made of high-strength aluminum alloy die-casting in design, and has enough internal space, wall thickness and mechanical strength. The thermal stability of rubber seal ring meets the national explosion-proof standard. Therefore, when the explosive gas mixture inside the junction box explodes, its internal pressure will not damage the junction box, and the heat energy generated from this will not be able to spread outward - detonation. As long as the user strictly abide by the product use rules, the product can achieve reliable explosion-proof effect.





2、 Application



It is usually used together with display instrument, recording instrument and electronic computer. The surface temperature of liquid, steam and gas media and solid surface in the range of 0 ℃ - 1300 ℃ in the presence of hydrocarbon and other explosives in the production site is directly measured.




3、 How it works



The explosion-proof thermocouple is a junction box with enough strength designed by using the principle of gap explosion-proof. All parts that will produce sparks, electric arc and dangerous temperature are sealed in the junction box cavity. When the explosion occurs in the cavity, it can extinguish and cool through the gap between the joint surfaces, so that the flame and temperature after explosion can not be transmitted to the outside of the chamber, so as to measure the temperature.





4、 Features



1. A variety of explosion-proof forms, good explosion-proof performance;

2. Pressure spring type temperature sensing element has good anti vibration performance;

3. The range of temperature measurement is large;

4. High mechanical strength, good pressure resistance;

5. It is designed according to the new Z explosion-proof code gb3838 in accordance with the international IEC standard. It adopts two chamber flame-proof structure and is easy to replace temperature measuring elements. It is safe and reliable to use the flame-proof mark D Ⅱ CT6. It is suitable for temperature measurement under class Ⅱ C, ignition temperature above T6 and explosive gas.





5、 Main technical parameters



Product execution standard

IEC584

IEC1515

GB/T16839-1997

JB/T5582-91

GB3836





Insulation resistance at room temperature

When the temperature of 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 sleeve is more than 1000 Ω. M.





Evidence collection list






Explosion proof level



Explosion proof Certificate No



Certification body






d l l BT4



d l l BT4




GYB96450



GYB96453




NEPSI



NEPSI






d l l CT5



d l l CT5




GYB98339



GYB97179




NEPSI



NEPSI





ia l l CT6



GYB99412



NEPSI




Note: nepsi explosion-proof certification is a national J-Class instrument explosion-proof safety supervision and inspection station




Explosion proof grouping form







Electrical equipment category




Class L - electrical equipment for underground coal mine

Class L L - plant electrical equipment




Explosion proof grade



The explosion-proof grade of explosion-proof thermocouple can be divided into three levels: A. B. C. according to the safety clearance of Z large test for explosive gas mixture.





category



level



Z large test safety clearance (MESG) mm





L l



A



0.9≤MESG





B



0.5﹤MESG﹤0.9





C



MESG≤0.5






Temperature group

The temperature group of explosion-proof thermocouple is divided into T1-T6 according to the allowable z-high surface temperature of its exposed part





Temperature group



Allowable Z high surface temperature (℃)





T1



Four hundred and fifty





T2



Three hundred





T3



Two hundred





T4



One hundred and thirty-five





T5



One hundred





T6



Eighty-five




Explosion proof level



EXdII□T□



EXiaII□T□





Protection grade: IP65




Type of junction box and installation terminal







Measurement range and tolerance






model




Graduation




Tolerance level






I




II






Tolerance




Temperature measurement range ° C




Tolerance




Temperature measurement range ° C






WRN




K




±1.5°C




-40~+375




±2.5 °C




-40~+333






±0.004ltl




375~1000




±0.0075 ltl




333~1200






WRM




N




±1.5°C




-40~+375




±2.5°C




-40~+333






±0.004 ltl




375~1000




±0.0075 ltl




333~1200






WRE




E




±1.5°C




-40~+375




±1.5°C




-40~+333






±0.004 ltl




375~800




±0.004 ltl




333~900






WRF




J




±1.5°C




-40~+375




±1.5°C




-40~+333






±0.004 ltl




375~750




±0.004 ltl




333~750






WRC




T




±1.5°C




-40~+125




±1°C




-40~+133






±0.004 ltl




125~350




±0.0075 ltl




133~350






6、 Model designation of explosion proof thermocouple





7、 Examples of explosive mixtures





Category



Ignition temperature (℃) and group

























T1



T2



T3



T4



T5



T6









level



T>450



450≥T>300



300≥T>200



200≥T>135