通常和显示仪表、记录仪表、电子计算机等配套使用，直接测量生产现场存在碳氢化合物等爆炸的0～1300℃范围内的液体、蒸汽和气体介质以及固体表面温度。 Explosion-proof thermocouples are usually used in conjunction with display instruments, recording instruments, and computers to directly measure liquid, vapor, and gaseous media and solid surface temperatures in the range of 0 to 1300 ° C where hydrocarbons and other explosives are present on the production site.
Multiple explosion-proof forms, good explosion-proof performance, pressure spring-type temperature sensing element, good vibration resistance, large measurement range, high mechanical strength, and good pressure resistance
与装配式热电偶的结构、原理基本相同，所区别的是，隔爆或本安型产品接线盒（外壳）在设计上采用防爆特殊结构，接线盒用高强度铝合金压铸而成，并具有足够的内部空间、壁厚和机械强度，橡胶密封圈的热稳定性均符合国家防爆标准。 Working principle: The structure and principle of flameproof thermocouples and assembled thermocouples are basically the same. The difference is that the explosion-proof or intrinsically safe product junction box (shell) is designed with a special explosion-proof structure. The junction box is made of high-strength aluminum. The alloy is made of die-casting and has sufficient internal space, wall thickness and mechanical strength. The thermal stability of the rubber seal ring meets national explosion-proof standards. Therefore, when the explosive mixed gas inside the junction box explodes, its internal pressure will not damage the junction box, and the resulting thermal energy cannot be diffused outward and transmitted. In chemical plants, consumer sites are often accompanied by a variety of flammable, explosive and other chemical gases and steam. If ordinary thermocouples are very unsafe, they can easily cause environmental gas explosions. Therefore, it is necessary to use an explosion-proof thermocouple as a temperature sensor in these places. The explosion-proof thermocouple products produced by Jiangsu Jinhu Dongxiang Instrument Co., Ltd. are suitable for use in places with a risk of explosive gas in the dⅡCT6 temperature group interval. The explosion-proof thermocouples produced by our company are suitable for the consumption of flammable and explosive compounds on the scene, and must be measured at multiple locations or at multiple locations. It is widely used in petrochemical distillation tower installation. Industrial explosion-proof thermocouple is a kind of temperature sensor. It is widely used in the chemical industry automatic control system. Through the temperature sensor, the temperature parameter of the control object can be converted into an electrical signal and transmitted to the display, record and conditioning instrument. Detection, conditioning and control.
I. Main technical parameters of flameproof thermocouple Electrical outlet: M20x1.5NPTI1 / 2 Thermal response time: ≤8S Wire diameter: Ф1. Ф2. Ф3 Protection level: IP65 Flameproof level: d‖BT4.d‖CT5
1. Order the thermocouple I according to the agreement; 2. Order the other materials of the maintenance tube according to the agreement; 3. The user of the external maintenance tube should prepare it by himself;
特点 Second, the characteristics of flameproof thermocouple
1.Designed according to the latest explosion-proof regulations GB3836 in line with international IEC specifications; 2.Adopting a two-cavity flameproof structure, which is cumbersome to change the temperature measuring element, and use it safely and securely3. Flameproof mark dⅡCT6, suitable for IIC level below, ignition temperature T6 Above, temperature measurement in places containing explosive gases. 4. Note: Please power off during maintenance