Can you introduce some precautions for the use of pressure switches?

The pressure switch is a high and low pressure protection control, steam service and power station widely used in household, commercial and automotive refrigeration systems. It can also be used for high and low pressure protection control of various equipment tools. However, in the selection of the pressure switch, the following points should be noted: 1. The necessity of explosion-proof: The explosion-proof form is divided into explosion-proof type and intrinsic safety type, and most of Nagano products are explosion-proof type. 2. Do you need to bring instructions: according to customer instructions. 3. Number of contacts: one contact (one output) or two contacts (two outputs). 4. Determination of set value and pressure range: The recommended setting range is between 30% and 65% of the pressure range, and the settable range is between 15% and 90% of the pressure range. 5. Is there a pulsation: If the pressure is pulsating or vibrating, a throttle valve is required to suppress the damage of the pulsating pressure to the meter.