Snap action contact adjustable set point vacuum pressure switch, IP65 waterproof Model ZX
Its applications are in the detection of the suction of water pumps, filter clogging of vacuum cleaners, pumps for vacuum packaging devices, checking of the presence of vacuum in professional equipment. Its high electrical rating allows it to be used without power relay in the control of motors or heating elements etc.
Main applications :
Its applications are in the detection of the suction of water pumps, filter clogging of vacuum cleaners, pumps for vacuum packaging devices, checking of the presence of vacuum in professional equipment. Its high electrical rating allows it to be used without power relay in the control of motors or heating elements etc.
Technical features :
Membrane: Silicone
Fluid: Air only
Fitting: PA66, 1/s” BSPT or 1/s” NPT
Pressure: Negative
Housing: PA66, UL94 VO. IP65 Ingress protection
Contact: SPDT, snap action.
Electrical rating: 3A 125/250 VAC, resistive
Action: Momentary.
Set point adjustment: Field adjustable by screw driver, after removing the calibration screw cap.
Set point calibration values: Standard -10 kPa (-100 mbar, -1.45 PSI}. Other values between -5 kPa (-50 mbar, -0.73 PSI) and -80 kPa (-800 mbar, -11.6 PSI) on request.
Electrical connection: PVC insulated cable, 3 x 0.5mm2 (AWG20}
Maximum operating pressure:
- Exposure to ambient atmospheric pressure: +100 kPa (+1000 mbar, +14 PSI)
- Exposure to vacuum pressure: -90 kPa (-900 mbar, -13 PSI)
Bursting pressure: > 10bar (1Mpa, 145PSI)
Ambient temperature limits: Air: -10 ~ 85°C (14 to 185°F).
Main part numbers. Calibration point preset at -10 kPa (-100 mbar, -1.45 PSI) :
Fitting | Cable length 500mm | Cable length 1000mm | Cable length 2000mm |
1/s” BSPT | ZX203VM1Z000000E | ZX203VM1Z000000J | ZX203VM1Z000000T |
1/s” NPT | ZX203ZM1Z000000E | ZX203ZM1Z000000J | ZX203ZM1Z000000T |
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Technical informations associated to this product
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Absolute pressure, barometric pressure,negative pressure, differential pressure
Although pressure is an absolute value, the current measures pressure, are usually made relative to ambient air pressure. In other cases, the measurements are compared to vacuum. This leads to confusion and errors. -
Differences between air switches and pressure switches
Pressure switches are used to control the pressure of a medium and operate an electrical device. When pressure rises to the set point value, they switch off the equipment or switch on an alarm. Fluid they control can be air or water. There is no barometric or ambient temperature compensation in pressure switches. -
Important parameters to select a pressure switch
Accuracy, actuating force and differential are given by membrane surface. -
Technical foreword of elastomeric membrane pressure switches
The pressure switches of this catalogue are made according to the flexible elastomeric membrane technology. The pressure applied deforms the membrane which then actuates an electrical contact.