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Main differences between electronic pressure switch and mechanical pressure switch

Published on: December 2, 2019 by: Changsha Zetian

With the rapid development of electronic technology and information technology, pressure measurement and automatic control technology has penetrated into all fields of people's life and work. As one of the control methods of pressure, pressure switch is not only limited to the two-state control of pressure at a certain point, but also can distinguish the pressure and set the control point continuously on the basis of switch control Therefore, electronic pressure switch has gradually become the mainstream of application instead of mechanical pressure switch.

 Cyb350 intelligent digital pressure switch

Cyb350 intelligent digital pressure switch

Name Mechanical pressure switch Cyb350 electronic pressure switch
How it works The action of microswitch is caused by pure mechanical deformation. When the pressure increases, the different sensing pressure components (diaphragm, bellows, piston) will deform and move upward. Through the mechanical structure such as rail spring, the top microswitch will be activated finally to output the electrical signal. The pressure sensor is mainly used for pressure sampling. The non electric quantity is directly converted into voltage or current by the pressure sensor, and the sensor signal is processed through the signal conditioning circuit. Finally, through the comparison circuit, the output level is a certain logic state, which can be input to the microcontroller to drive the rear circuit or control the electric switch. The user can determine the pressure value of the pressure switch by setting the level conversion threshold.
accuracy Low accuracy (generally about ± 5%) High precision (generally within ± 0.2% FS)
signal output Mechanical deformation to change the switch value The relay signal output is stable
Pressure point The pressure point is not adjustable Adjustable relay, no dead zone
display No display function Digital display function (4-digit LED display), real-time display of set pressure value and current pressure value
response speed Large hysteresis and slow response (spring deformation) Small hysteresis and fast response
power supply passive Active
application area In the fields of hydraulics, precision control and automatic pressure control, electronic pressure switch can replace most places where mechanical pressure switch, liquid level switch, pressure relay and electric contact pressure gauge are used.

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