SenTec

PW140E High pressure switch with adjustable function

PW140E High pressure switch with adjustable function adopts diaphragm type, corrugated pipe, piston and spring tube load sensing elements. The common type can be used to realize automatic pressure  control in the places where the corrosive effect of the load sensing elements is odor, liquid or steam.

PW140E High pressure switch with adjustable function is a purely mechanical deformation that causes the micro switch to act. When the pressure increases, the different sensing pressure components (diaphragms, bellows, pistons) will be deformed, and will move upwards. Through mechanical structures such as railing springs, the uppermost micro-switch will finally be activated to output electrical signals. PW140 series pressure switches can provide different pressure, differential pressure, vacuum and temperature ranges, and can also provide different connection methods, various materials and pressure sensing element types. It is precisely because of this flexible selection method that PW140 series pressure Switches can be widely used in various places, such as chemical, petrochemical, oil refining, oil field, drilling platform, oil pipeline and pharmaceutical and other industrial processes.

The explosion-proof mark of the explosion-proof product is Exed 11CT6, which can be used for the  automatic pressure control of class 11a, 11B, 11C t1-t6 explosive gas mixtures in places where the pressure sensor has no corrosive effect on gas, liquid or steam.

The adjustment range of the set value of the controller is -0.1~ 40Mpa. The working pressure is 1.5 times of the range.

Parameters

Ordinary typeExplosion-proof type
Work viscosity≤ 1 0 – 3 m ²/ S≤ 1 0 – 3 m ²/ S
Switching elementMicro switchMicro switch
Explosion-proof gradeE X ed 1 1 C T 6
Enclosure protection classIP 6 5IP 6 5
Environment temperature– 1 5 °C – 5 5 °C– 1 5 °C – 5 5°C
Environment humidity5 % – 9 5%5 % – 9 5%
Service life1 0 ⁵ cycle1 0 ⁵ cycle
Resistant< M a x • 2 g< M a x • 2 g
Rated loadV m a x= 380VZ max=5 AV m a x=380 VZ max= 5 A
Renaturation error≤ 1 .0 %≤ 1 .0 %

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