Principle, Structure

The built-in piston is connected to the spring and when the pressure changes, the amount of spring stretching changes accordingly, and when the pressure reaches the set value, it triggers the preset mechanical structure and sends a switch signal.


 Compact structure, DN standard plug, easy wiring, wide measuring range.

 High overload capacity, high repeatability, specific normally open or normally closed contacts, gold plated contacts, large contact capacity.

 Can be used for: water and oil pressure measurement.

  • Price Term: FOB/CIF/EXW/DAP
  • Package: Exported Wooden case or according to customer request
  • Delivery Time:  7 to 10 working days
  • Transports: By sea, by air, by high express
  • Shipment Port: Shanghai Port
  • Origin of Place: Jiangsu
  • Warranty: 12 Months
Measurement Range See table below for details
Hysteresis 10-20% setpoint (25%-35%, 1%-5% optional)
Error 3% Setpoint
Output Normally open + normally closed   Gold-plated contacts

≤DC 42V,1A   ≤DC 115V,0.15A   ≤AC 42V,3A

≤AC 125V,3A   ≤AC 250V,0.5A

Medium Temperature -20-85℃
Protection IP65
Wiring Method Terminal Wiring
Material Diaphragm: NBR   Piston: Steel piston with NBR seal

Process connection: Galvanized steel/stainless steel

Housing: Engineering plastic

Interface Material Model Maximum Allowable Pressure


Setting Range


Error Fixed Hysteresis Weight


Membrane type MS-T50-02.5 25 0.2~2.5 3% 10% ~ 20% set point

25% ~35% set point (optional)

1% ~ 5% set point (optional)

MS-T50-005 25 0.8~5
MS-T50-012 25 1~12
MS-T50-050 200 5~50
Piston type MS-T50-100 200 10~100
MS-T50-200 300 20~200


MS-T50- 012 M M12 H C Detailed Description
    T       Copper
    L       Steel
    X       Stainless steel 304L
      G12     Interface thread G1/2
      G14     Interface thread G1/4
      N14     Interface thread NPT1/4
      M14     Interface thread M14*1.5
      M20     Interface thread M20*1.5
        H   Interface thread male thread
          R Normally open + normally closed output

Wiring Diagram

Pressure switch Dimensional drawing



Installation Location

Applicable media

Step 1: Loosen the shield fixing nut with a screwdriver to remove the shield and the female plug (do not rotate the Hirschmann connector left or right when removing it

to avoid breaking the internal wiring).

Pressure switch1

Step 2: Refer to the above figure screwdriver mediation pressure switch point size, clockwise to adjust the larger, counterclockwise to adjust the smaller.

Pressure switch

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