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Difference between Mechanical differential pressure switch and Electronic differential pressure switch



1 What is a mechanical differential pressure switch?

The mechanical differential pressure switch is a kind of microswitch with 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 handrail spring, the top microswitch will be activated, finally output the electrical signal. The pressure controller of the differential pressure switch adopts this form.


Mechanical Differential Pressure Switches

A.YITE Brand 101NN type Mechanical Dfferential Pressure Switches





2 What is an electronic differential pressure switch?

Electronic differential pressure switch is popular in the market in recent years. It is used to replace the electric contact pressure gauge, mainly used in the system with high requirements for industrial control. This kind of differential pressure switch has built-in precision pressure sensor, amplifies the pressure signal through high precision instrument amplifier, collects and processes the data through high-speed MCU


Electronic Differential Pressure Switches

Digital Electronic Differential Pressure Switches

No need Calibrate, Easy adjust by pressing the button, easy installation, 2 set point, 2 SPDT  switch, adjustable. Made by A.YITE TECH, GE-209 series




Generally, Electronic Differential Pressure Switch adopt 4-bit LED for real-time digital display, it could have 2 SPDT relay signal output, upper and lower limit control points can be set freely, with small hysteresis, anti vibration, fast response, stability and reliability, and high accuracy (the accuracy is generally ± 0.5% F.S, which is up to ± 0.2% F.S).

The electronic differential pressure switch can effectively protect the repeated action caused by pressure fluctuation by using the return differential setting. It is a high-precision device for detecting pressure and liquid level signals, it could realize the pressure and liquid level monitoring and control. The features are: the electronic display screen is intuitive, high precision, long service life, convenient to set control points through the display screen, but relatively high price, requiring power supply.

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