0.2 to 2bar SPDT Zinc Die-Cast Pressure Switch Flange 250VAC 4-pin M12 Connector

This is a mechanical pressure switch with changeover (SPDT (single pole, double throw)) contacts. They are composed of a normally closed contact pair and a normally open contact pair. The setpoint is the pressure value where the switch activates and the reset point is the value at which the switch deactivates when the pressure decreases. The setpoint can be adjusted between 0.2 and 2 bar (3 and 29 psi). The maximum overpressure is 60 bar (870 psi). It has a switch hysteresis (the difference between setpoint and reset point) of 10 – 15%. The switching capacity for this pressure switch is 3 A @ 24 V DC or 6 A @ 250 V AC. It can be connected to an electrical network with a 4-pin M12 connector. This pressure switch is made in a diaphragm design with a zinc die-cast body and an NBR seal. It is suitable for various media, such as compressed air, hydraulic oil, water and in a temperature range from -20 to 80°C (from -4 to 176°F). It has a flange 5.3×20 port. The pressure switch has an IP67 rating.

Pros:

• A mechanical pressure switch doesn’t need a power supply
• Long working life and stable operation
• Set the pressure setpoint easily and precisely with the adjustment wheel

Cons:

• The accuracy of mechanical pressure switches is lower than that of electronic pressure switches
• Electronic pressure switches are better suited for process control where several switch points, the stability and flexibility of the control are important

PSL series

Tameson offers a wide range of mechanical and electronic pressure switches. The mechanical pressure switches are available with three different types of contacts: normally open (NO), normally closed (NC) and changeover contacts. The setting pressure is typically adjusted with a hex key or turning knob. The electronic pressure switches have a digital display to set up the switching function. Electronic switches often combine the function of a pressure transducer with a 0-10 V, 4-20 mA or digital output signal. The setting pressure range for these pressure switches is from -1 to 600 bar (from -14 to 8702 psi) and overpressure safety of up to 600 bar (8702 psi) can be attained. Hysteresis is the difference between the switch point and the reset point. Mechanical switches have a hysteresis in the range of 10-30% while electronic switches are often configurable. Choose from a wide range of switch capacities. Please note that maximum load is dependent on voltage and different loads are allowed for AC or DC voltage. Electronic pressure switches require power supply to function. Choose from brass, steel or stainless steel options with various sealing materials to be compatible with your medium and temperatures. Check our chemical resistance table when in doubt. Furthermore, choose from a wide range of options such as mounting standards, electrical connections, ATEX approvals and more.

Specifications

Material : Zinc die-cast
Seal material : NBR (nitrile rubber)
Contacts : Changeover contact
Max. overpressure (bar) : 60
Max switch capacity : 3 A / 24 V DC,6 A / 250 V AC
Switch hysteresis : 10 – 15 percent
Max pressure (bar) : 2
Min pressure (bar) : 0.2
Connection type : Flange 5.3×20
Pressure sensor feature : With adjustment wheel
Min temperature (°C) : -20
Max temperature (°C) : 80
Electrical connection : Plug-in connection M12
Degree of protection (IP) : IP67
Suitable for ammonia : No
Suitable for air : Yes
Suitable for oil : Yes
Suitable for water : Yes
Suitable for steam : No
Suitable for gases : No
Suitable for glycol : No
Measuring element : Membrane