Explosion Proof Pressure Switches are designed for pressure control within harsh applications. The wiring contacts are sealed in a solid space through a solid sealed shell to achieve explosion-proof effect.

Features of Explosion Proof Pressure Switch

1. The operating point is stable and will not be affected by shock, vibration, temperature changes or other environmental conditions.
2. The contact will not shake due to pressure fluctuations, and the open or closed state is clear.
3. It is not affected by the impact of the pump and the vibration fatigue of the contact.
4. Long life, high stability and action repeatability.

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Specifications of Explosion Proof Pressure Switch

Working viscosity	<1×10-3m2/s
Switching element	Micro Switch
Ambient temperature	-20℃～40℃
Medium temperature	－20℃～80℃
Enclosure rating	IP66
Installation location	The pressure port is vertically downward (allowing 15°C tilt)
Vibration resistance	Max 100m/s2
Repeatability error	≤2%
Service life	1×105 times
Contact rating	AC 220V 6A (resistive)

Extended reading: Pressure indicator transmitters

Principle of Explosion Proof Pressure Switch

The working principle of the explosion-proof pressure switch is that the micro switch action caused by pure mechanical deformation.

When the pressure increases, the different sensing pressure components (diaphragm, bellows, piston) will be deformed. They will move upward through the railing spring and other mechanical structures. The top micro switch is activated. The electrical signal is output.

The setting method is divided into continuous displacement type and force balance type from the functional principle.

According to the principle, explosion-proof pressure switches can be divided into mechanical explosion-proof pressure switches and electronic explosion-proof pressure switches. The mechanical type is divided into ordinary and sealed types.

Extended reading: Miniature Pressure Switch

Explosion Proof Pressure Switch explosion-proof grade

• The explosion-proof mark of the domestic explosion-proof pressure switch is Ex. It can be used for llA, llB, and flammable dust environment in areas 20, 21, and 22 of gas, liquid or steam that have no corrosive effect on pressure-sensitive components;Applicable to hazardous locations in zone 1 and zone 2 of explosive gas environment;
• It is suitable for the environment where the temperature group is T1-T6.
• Automatic pressure control is realized in llC category T1~T6 hazardous gas mixture places.
• The current domestic explosion-proof pressure switch grade is ExedllCT6.

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Electronic Pressure Switch

More Featured mechanical pressure switches

Sino-Inst offers over 10 Explosion Proof Pressure Switches for pressure measurement. About 50% of these are liquid pressure swithces, 40% is gas pressure switches.

It is widely used in hydropower, tap water, petroleum, chemical, machinery, hydraulic and other industries to measure, display and control the pressure of fluid media on site.

A wide variety of Explosion Proof Pressure Switches options are available to you, such as free samples, paid samples.

Sino-Inst is a globally recognized supplier and manufacturer of Explosion Proof Pressure Switch instrumentation, located in China.