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
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
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 a universal pressure switch, the appearance can be designed according to the specific requirements of customers, and it has a wide range of applications.Such as air suspension systems, water treatment, air compressors, mechanical hydraulic and oil pressure control systems, agricultural machinery, construction machinery, CNC machine tools and machining center lubrication systems, safety devices, air-conditioning, refrigeration equipment, vacuum generators, vacuum tanks , Electric vehicle brake booster system, etc.
The working principle of the pressure switch is that if the pressure in the pressure switch system is higher or lower than the initial set safety pressure value, the internal disc of the pressure switch can detect and issue an alarm in time, and movement occurs, and the connection of the pressure switch is connected to the power supply , So that the connection of the pressure switch turns on or off the power.The water pressure switch is usually set to a fixed value when in use. That is, when the actual value is less than the fixed value or greater than the fixed value, an alarm will occur and movement will occur to cause a connection with another link. Turn the power on or off. When the water pressure in the system reaches a fixed value, it returns to its original state.
This is a pressure switch with a pagoda-shaped joint, and its joint is in a continuous cone shape.
So it can be better connected with water pipes and air pipes.
This pressure switch is mostly used in air compressors, small air pumps, and water pumps, air tank.
Air pipe or water pipe can be installed at its interface.
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.
This is a pressure switch with a pagoda-shaped joint, and its joint is in a continuous cone shape.So it can better connect with water pipes and air pipes,
This pressure switch is mostly used in small air compressors, small air pumps, and water pumps.Air pipe or water pipe can be installed at its interface, In addition, the inserting part can be connected by soldering wires, and the specified terminal connector can be installed.Of course, if you have high waterproof requirements, you can also add our unique waterproof case, as shown in the figure below
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.
The pressure switch adopts stainless steel action diaphragm and is manufactured by mature technology. It has the advantages of fully enclosed, high precision, no drift, small size, vibration resistance, long durability, reliable performance, and convenient installation.It can automatically measure and control the pressure in the system, prevent the pressure in the system from being too high or too low, and output switch signals to ensure that the equipment works within a safe pressure range.
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.