Flameproof thermocouple1

Explosion-proof thermocouple is a kind of temperature sensor. Explosion-proof thermocouple is widely used in chemical industry automatic control system. Explosion-proof thermocouple can turn the temperature parameter of the controlled object into electrical signal through temperature sensor, and transmit it to display, record and The regulator is used to detect, adjust and control the system.

In chemical plants, the production site is often accompanied by various flammable and explosive chemical gases and steam. It is very unsafe to use ordinary thermocouples, and it is very easy to cause environmental gas explosions. Therefore, explosion-proof thermocouples must be used as temperature sensors in these occasions. The explosion-proof thermocouple products produced by the company are suitable for places with explosive gas danger in the dⅡCT6 temperature range.

If a closed circuit is composed of two homogeneous conductors (hot electrodes) of different components, when there is a temperature gradient at both ends, there is a current passing through the circuit, then there is a thermoelectric potential between the two ends.

Explosion-proof principle:

Using the principle of gap explosion isolation, design the junction box and other components with sufficient strength to seal all the parts that produce sparks, arcs and dangerous temperatures in the junction box. When an explosion occurs in the cavity, the flame can be extinguished through the gap of the joint surface. Cooling, so that the flame and temperature after the explosion do not pass outside the cavity.

Features

Designed according to the latest explosion-proof regulations GB3836 in line with international IEC standards;

Adopt two-chamber explosion-proof structure, easy to replace the temperature measuring element, safe and reliable to use

Explosion-proof mark dⅡCT6, suitable for temperature measurement below ⅡC level, ignition temperature above T6, and explosive gas.

Precautions:

Please cut off the power during maintenance

The armored thermocouple is equipped with an explosion-proof junction box and must be inspected by an explosion-proof inspection unit and an explosion-proof certificate shall be applied for.

Feature

Multiple explosion-proof forms, good explosion-proof performance; compression spring type temperature sensing element, good vibration resistance; test

Wide temperature range; high mechanical strength, good pressure resistance; designed according to the latest explosion-proof regulations GB3838 in line with international IEC standards; adopts two-chamber explosion-proof structure, easy to replace temperature measuring elements, safe and reliable to use

Explosion-proof mark dⅡCT6, suitable for temperature measurement below ⅡC level, ignition temperature above T6, and explosive gas.

the difference

Explosion-proof thermocouple applications are usually used in conjunction with display instruments, recording instruments, and electronic computers. Directly measure the surface temperature of liquid, vapor and gaseous media and solids in the range of 0℃~1300℃ where there are explosives such as hydrocarbons at the production site. Features: A variety of explosion-proof forms, good explosion-proof performance; pressure spring type temperature sensing element, good vibration resistance; large measuring range; high mechanical strength, good pressure resistance; working principle explosion-proof thermocouple is based on the principle of gap explosion-proof, designed with The junction box and other components with sufficient strength will seal all the parts that generate sparks, electric isolation and dangerous temperature in the junction box, when an explosion occurs in the box.

application

In chemical plants, the production site is often accompanied by various flammable and explosive chemical gases and vapors. It is very unsafe to use ordinary thermocouples and can easily cause environmental gas explosions. Therefore, flameproof thermocouples must be used as temperature sensors in these situations.

Examples of explosive mixtures

The protection tube and the measuring element are of separate structure, which can quickly replace the temperature measuring element for non-stop repairs.

The protection tube has various forms and materials, which can meet the temperature measurement needs of high pressure, high temperature and strong corrosive media.

Using armored components, pressure resistance, earthquake resistance, stable and reliable work.

Explosion-proof signs dⅡBT4, iaⅡCT4, suitable for temperature measurement below grade Ⅱ, ignition temperature above T4, and explosive gas.

Types of explosion-proof thermocouples: K type explosion-proof thermocouple, K type explosion-proof thermocouple, E type explosion-proof thermocouple, multi-point explosion-proof thermocouple, multi-point explosion-proof assembly thermocouple, multi-point explosion-proof armored thermocouple, explosion-proof armor Install thermocouples, explosion-proof thermocouples, explosion-proof armored thermocouples, explosion-proof and corrosion-resistant thermocouples, etc.