The pressure switch adopts a high-precision, high-stability pressure sensor and transmission circuit, and then special CPU modular signal processing technology to realize the detection, display, alarm and control signal output of the medium pressure signal. When the pressure in the system is higher or lower than the rated safety pressure, the disc in the sensor moves instantaneously, and the switch connector is pushed on or off through the connecting guide rod. When the pressure drops or rises to the rated recovery value, the disc The chip resets instantly and the switch automatically resets.
Features:
1. It adopts inch pipe thread quick joint or copper pipe welding type installation structure, which is flexible in installation and convenient to use without special installation and fixation.
2. The plug-in wire connection method can be selected by users.
3. The sealed stainless steel sensor is safe and reliable.
4. The pressure range can be manufactured according to the pressure value arbitrarily selected by the user. The pressure switch is a device combined with the electrical switch. When the preset fluid pressure is reached, the switch contact will act. It is mainly used to output alarm or control signals on industrial equipment such as power plants, petrochemicals, and metallurgical industries. It has important uses in the industrial field to prevent damage to important devices in production engineering and avoid major production accidents.
Pressure switches are widely used in the high and low pressure protection control of household, commercial, and automobile refrigeration systems, steam conditions and power stations; accumulators, receivers, flash tanks, separators, scrubbers, oil refining devices. It can also be applied to high and low pressure protection control of various equipment and tools. But in the selection of pressure switch, the following points must be paid attention to:
1. The necessity of explosion-proof: explosion-proof forms are divided into explosion-proof type and intrinsically safe type, and most of Nagano products are explosion-proof type.
2. Whether 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 setting value and pressure range: The recommended setting range is between 30% and 65% of the pressure range, and the adjustable range is between 15% and 90% of the pressure range.
5. The form of differential connection: adjustable or fixed.
6. Whether there is pulsation: If the pressure is pulsating or vibrating, a throttle valve is required to suppress the damage of the pulsating pressure to the instrument.
7. Occasions with diaphragm: When measuring corrosiveness, high viscosity or high temperature, it is necessary to choose diaphragm.