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 transmitter adopts the international advanced pressure sensing element and transmitter special integrated circuit, which is a high-quality, highly reliable, and anti-overload pressure transmitter.It adopts special pressure chips for refrigeration, air conditioning, and heat pump systems, which are corrosion-resistant, impact-resistant, and have good strong corrosion resistance to refrigerants, which can meet the vibration and impact requirements of refrigeration units, and have stable and reliable performance.Mainly used in water-cooled screw units, ground source heat pumps, refrigerators, ice machines, etc. Its unique anti-condensation design plays a pressure protection role for the safe and efficient operation of the equipment.
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 pressure switch can be used in many fields, such as air conditioning refrigeration systems, car horns, ARB air pumps, air compressors, etc.In the refrigeration and air-conditioning system, the general air-conditioning pressure switch is installed in the air-conditioning condensing pipe, mainly to detect the pressure of the refrigerant in the air-conditioning pipe.When the pressure is abnormal, the corresponding protection circuit is activated to prevent damage to the system.Common air-conditioning pressure switches generally include high-pressure switches, low-pressure switches, two state pressure switches and three state pressure switches.
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 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.
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.
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 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.
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.