Explosion-proof classification characteristics and the principle of thermocouple

Industrial explosion-proof thermocouple is a kind of temperature sensor, widely used in the chemical industry control system, through the temperature sensor, thermocouple can control the temperature of the object parameter into electrical signal, passed to the display, record and adjusting device, the system testing, adjusting and control. In chemical plant, the production site is often accompanied by various kinds of flammable, explosive chemical gas, steam, if use common thermocouples are not safe, easy to environment caused by gas explosion. Working principle if by two kinds of different ingredients of homogeneous conductor ( Hot electrode) Of closed loop, when when there is a temperature gradient on both ends of the loop there is an electric current passes through, so both existed between thermoelectric potential. Explosion-proof original clearance flame-proof principle is used to design has enough strength of the junction box etc, all can produce spark, arc and dangerous temperature zero parts are sealed in the terminal box, when an explosion cavity, can remove from heat and cooling by joint clearance, the explosion flame and the temperature is not reached outside the cavity. The main technical parameters of the thermocouple in the environmental temperature is 20 + 15 ° C, relative humidity is not more than 80%, the test voltage for 500 (plus or minus 50 v Dc) Between the electrode and outer casing insulation resistance & gt; 1000Ω。 M characteristics according to the international IEC standard * new explosion-proof thermocouple discipline GB3836 design; By using two cavity flame-proof structure, change the temperature measuring device is simple, safe and reliable use; Flame-proof mark d Ⅱ CT6, suitable for Ⅱ C below level, ignition temperature above T6, with explosive gas temperature measurement. Classification of ordinary flame-proof thermocouple, heat resistance profile according to the international IEC standard GB3836 design * new explosion-proof specifications. By using two cavity flame-proof structure, change the temperature measuring device is simple, safe and reliable use. Explosion-proof mark d Ⅱ BT4, suitable for Ⅱ below level B, ignition temperature T4 above, the explosion gas temperature measurement. Armoured explosion-proof thermocouple protection tube, thermal resistance profile and measuring element as separate structure, can rapidly changing temperature measurement component, non-stop to repair. Protecting tube form and the material is diversiform, can meet the high pressure, high temperature and strong corrosive medium temperature measurement needs. Using armored component, pressure, seismic, work stable and reliable. Explosion-proof marks d Ⅱ BT4, ia Ⅱ CT4, suitable for below level Ⅱ, ignition temperature T4 above, including explosive gas temperature measurement. Explosion-proof thermocouple type: K type explosion-proof type explosion-proof wear-resistant thermocouple, thermocouple, K E explosion protection thermocouple, multipoint thermocouple, multipoint explosion-proof assembly thermocouple, multipoint explosion-proof armoured thermocouple, explosion-proof armoured thermocouple, explosion-proof type thermocouple, explosion-proof armoured thermocouple, explosion-proof corrosion thermocouple and so on. Dear customer: hello, our company is a strong technical force of the development of high quality, for the majority of users with high-quality products and complete solutions and the best technical services company. The main products are platinum rhodium thermocouple S type thermocouple sheathed thermocouples tungsten-rhenium thermocouples, etc. This enterprise uphold sincerity, with the purpose of the implementation of quality and with enterprising societe generale, with a firmer step climb the new peak unceasingly, contribute to national automation industry, welcome new and old customers to rest assured the choose and buy the desired products. We will serve you wholeheartedly!