How to choose the pressure switch
Specific look at your needs, and explosion-proof, mechanical, the specific consultants can choose the selection of engineers
The pressure switch can be divided into mechanical and electronic sub-
First confirm that you need to confirm the type of switch
1. mechanical
2. Electronic
If mechanical pressure switches are selected, the following parameters need to be confirmed
1. Switch range
2. Switch lag
3. Body material
4. Switch function: normally open or normally closed or single pole double throw
5. Interface size
6. Dielectric temperature
7. Electrical connection form:
8. Protection class:
For electronic pressure switches, please confirm the following parameters
Range
2. Switch range
3. Accuracy
4. The number of switches
5. Switch function: normally open normally closed (PNP or NPN output)
6. Interface size
7. Medium temperature
8. Electrical connection
9. Degree of protection
Please note the difference between the two
1. Switch function: mechanical switch than the electronic switch more than a single pole double throw function
2. Load power: mechanical switch load than electronic to large,
3. Application: mechanical pressure switch can be directly connected to the circuit, or with the relay used, while the electronic pressure switch directly output switch signal, and the need for external power supply.
4. Price: mechanical pressure switch is cheaper than electronic
