1.Electrical parameters: 0.2A 24V DC T150; 0.5A 1A 2.5A 250VAC
2.Operating temperature: -40℃~ 120℃(No frost )
3.Connection size: The normal size is 1/8 or 1/4. Can be customized according to customer requirements
4.lifetime: 1 million times
5.Electrical life : 0.2A 24V DC 1 million times; 0.5A 12V DC 500,000 times; 1A 125V/250VAC 300,000 times
1. Product Name: Water Pressure Switch, Air Pressure Switch, Micro Pressure Switch, Vacuum Switch
2.Electrical parameters: 16 (4) A 250VAC T125 16A 25A 250VAC
3. Applicable medium: steam, air, water, liquid, engine oil, lubricating oil, etc
4.The highest pressure: positive pressure: 1.5MPA; Negative pressure: -101kpa
5. Working temperature: -35℃~160℃ (no frosting)
6. Interface size: conventional G1/8, according to customer requirements
7.Control mode: open and close mode
8. Product material: copper base + plastic shell, or copper base + aluminum shell
9. Mechanical life: 300,000 times
10.Electrical life: 6A 250VAC 100,000 times; 0~16A 250VAC 50,000 times; 16~25A 250VAC 10,000 times
1.Product name: Refrigeration Pressure Switch, Air Compressor Pressure Switch, Steam Pressure Switch, Water Pump Pressure Switch
2. Use medium: refrigerant, gas, liquid, water, oil
3.Electrical parameters: 125V/250V AC 12A
4. Medium temperature: -10~120℃
5. Installation interface; 7/16-20, G1/4, G1/8, M12*1.25, φ6 copper tube, φ2.5mm capillary tube, or customized according to customer requirements
6. Working principle: The switch is normally closed. When the access pressure is greater than the normally closed pressure, the switch is disconnected. When the pressure drops to the reset pressure, the reset is turned on. Realize the control of electrical appliances
Electrical parameters : 5(2.5)A 125/250V
Pressure setting: 20pa~5000pa
Applicable pressure: Positive or negative pressure
Contact resistance: ≤50mΩ
Maximum breakage pressure: 10kpa
Operating temperature: -20℃~85℃
Connection size: Diameter 6mm
Insulation resistance: 500V-DC-lasted 1min,≥5MΩ
The pressure switch is applicable to cold and hot water automatic suction pump, domestic booster pump, pipeline pump and other water pumps, It can automatically control the start and stop of the water pump, with simple operation, stable performance, machine protection and energy saving Power consumption, pressure control, kg pressure, optional (1kg = 10m)
The pressure switch is installed on the high-pressure side of the air-conditioning system.When the refrigerant pressure is ≤0.196MPa, since the elastic force of the diaphragm, the butterfly spring and the upper spring is greater than the pressure of the refrigerant, the high and low pressure contacts are disconnected (OFF), the compressor stops, and low pressure protection is realized.
When the refrigerant pressure reaches 0.2MPa or more, this pressure is higher than the spring pressure of the switch, the spring will bend, the high and low pressure contacts are turned on (ON), and the compressor operates normally.
The pressure switch is mainly used in the refrigeration system, in the pipeline circulation system of high pressure and low pressure, to protect the abnormal high pressure of the system to prevent damage to the compressor.
After being filled, the refrigerant flows into the aluminum shell (that is, inside the switch) through the small hole under the aluminum shell. The inner cavity uses a rectangular ring and a diaphragm to separate the refrigerant from the electrical part and seal it at the same time.
The automobile air conditioner pressure switch is a part to protect the air conditioner refrigeration, it can adjust the pressure in time.When the refrigerant pressure in the air conditioning system is too high or too low, the pressure switch is turned off, so that the compressor does not work (the pressure switch and other switches control the relay to control the compressor) and protect the system components from damage.Generally divided into two-state pressure switch and three-state pressure switch. The pressure switch is generally connected to the compressor, the condenser electric fan or the water tank fan. It is controlled by the ECU on the car and controls the opening of the fan according to the pressure change in the air conditioner. Turn off, or the air volume, when the pressure is too high, the compressor will stop working to protect the system.
The main applicable models of this air-conditioning pressure switch are as follows: Dongfeng, peugeot, 307, 206, 207, 308, 408, 508, 3008, 2008, 301, 308S, 4008, 5008, Citroen, Sega, C2, Senna, Picasso, C4L C4 Sega C6 C3-XR Elysee New Elysee Beverly C5 C5 Tianyi Fengshen A9 AX7 AX4 AX3 A60 L60 A30 S30 H30.The above complaints all refer to applicable models, not any product brands.
It is widely used in various industrial automation environments, involving water conservancy and hydropower, railway transportation, intelligent buildings, production automation, aerospace, military, petrochemical, oil wells, electric power, ships, machine tools, etc., such as refrigeration systems, lubrication pump systems, air compressor etc.
The mechanical pressure switch is a micro switch action caused by pure mechanical deformation.When the pressure increases, the different sensing pressure components (diaphragm, bellows, piston) will deform and move upward. The upper micro switch is activated by a mechanical structure such as a railing spring to output an electrical signal. This is the principle of the pressure switch.
This is an air conditioner three-state pressure switch, which includes a high and low pressure switch and a medium voltage switch. The three-state pressure switch is installed on the high-pressure pipeline of the air-conditioning system.
Low-pressure switch: When the air-conditioning system leaks or the refrigerant is low, in order to protect the compressor from damage, the control circuit of the compressor is forcibly cut off to stop the compressor.
Mid-state switch: When the condensing pressure is high, force the condensing fan to rotate at a high speed to reduce the high pressure pressure and increase the cooling effect.
High pressure switch: In order to prevent the system pressure from being too high, causing the system to explode, the compressor is forced to stop working. When the high-pressure pressure of the air conditioner is abnormally high, the high-pressure switch is opened to cut off the control circuit of the compressor, and the air-conditioning system stops working.