Manual Reset Pressure Switch is suitable for semi-automatic operation. Control high pressure end and the low pressure end of the system at the same time.

Features of Manual Reset Pressure Switch

1. Manually push the reset switch to meet special working conditions
2. Working pressure can be manufactured according to user requirements (30-800PSI)
3. Using laser welding process equipment, excellent sealing performance
4. The contacts are all silver-plated, and the special products are silver contacts (industrial grade), which are stable and reliable.
5. Long working life of switch electrical contacts (more than 100,000 times), excellent shock resistance

Specifications of Manual Reset Pressure Switch

Output signal:	switch signal
Working pressure (high position) range:	30～800PSI
Reset pressure (low position) Range:	10～700PSI
Working pressure deviation:	±3～30PSI
Ambient temperature:	-40～85℃
Medium temperature:	-40～125℃
Electrical load:	220VAC, 56/60Hz, 3A
Working life:	≥100,000 Cycles

PC200 series manual reset pressure switch model list:

Model	Thread size/length (mm)	Dimensions (mm)	Electrical connections	Switch Type Normally closed (A)/normally open B /C (normally open + normally closed)	Action pressure (PSI)	Reset pressure (PSI)
PC 201	Inner 7/16-20UNF	Φ23×53	Direct out	Single Pole Single Throw A	30～800	10～700
PC 202	Inner 7/16-20UNF	Φ23×53	Direct out	Single Pole Double Throw C	30～800	10～700
PC 203	1/4NPT /13	Φ23×59	Direct out	Single Pole Single Throw A	30～800	10～700
PC 204	1/4NPT /13	Φ23×59	Direct out	Single Pole Double Throw C	30～800	10～700
PC 205	Φ6 trachea/72	Φ28×108	Terminal	Single Pole Single Throw A	30～800	10～700
PC 206	Φ14 trachea x21	Φ23×60	Direct out	Single Pole Double Throw C	30～800	10～700
PC 207	Inner 7/16-20UNF	Φ24×53	Direct out	Single Pole Single Throw A	30～800	10～700
PC 208	Inner 7/16-20UNF	Φ24×53	Direct out	Single Pole Single Throw A	30～800	10～700

Manual Reset High Pressure Switch

The controller adopts a piston type sensor, which is divided into three types: with a drain port, a non-leak piston and a combination of a piston type and a diaphragm type.

It can be used for compressed air containing oil mist and other gas containing oil mist that has no corrosive effect on the pressure sensor material, hydraulic oil, water-oil emulsion and neutral liquid medium with good lubricating performance.

The setting value of the controller is adjustable, and its adjustment range is 0.3-40MPa.

Extended reading: Miniature Pressure Switch

How does a pressure switch work?

The force switch is a simple pressure control device. When the measured pressure reaches the rated value, the pressure switch can send out an alarm or control signal.  

The working principle of the pressure switch is: when the measured pressure exceeds the rated value, the free end of the elastic element is displaced, and the switch element is pushed directly or after comparison to change the on-off state of the switch element to achieve the purpose of controlling the measured pressure.  

The elastic elements used in the pressure switch include a single-turn spring tube, diaphragm, bellows and bellows.    

Switching elements include magnetic switches, mercury switches, micro switches, etc.    

There are two types of pressure switches: normally open and normally closed.

Extended Reading: Electronic Pressure Switch for Air Compressor

How do you test a pressure switch?

Calibration method of pressure switch:

1. Find out the action setting value of the tested instrument according to the specification.
2. Select an appropriate pressure signal source to pressurize the test meter. A standard pressure gauge with an appropriate range detects the signal pressure. Use a multimeter to measure the on and off states of the contacts.
3. For the high report switch, slowly increase the pressure from low to high, and observe the multimeter. When the multimeter indicates a sudden change, the evaluation of the standard pressure gauge is the high reported value.
   Then slowly lower the pressure. When the multimeter indicates a sudden change again, the evaluation of the standard pressure gauge is the reset value.
4. For the under-report switch, the test pressure should be increased above the set value first, and then slowly decreased.
   When the multimeter indicates a sudden change, the evaluation of the standard pressure gauge is a low value.
   Press again slowly, and when the multimeter indicates a sudden change again, the indication value of the standard pressure gauge is the reset value.

Miniature Pressure Switch PC-100

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

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

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