The mechanical micro-differential pressure switch is a gas measuring medium, and the gas flow is controlled by the micro-pressure change micro-switching action of the gas, because the overall action structure is based on the mechanical structure as the main transmission method, which is called mechanical micro-pressure. Differential switch.
According to the operating mode can be divided into: not adjustable and adjustable. Non-adjustable refers to the product that is manufactured according to the required action pressure value setting, the action pressure value is fixed, and the adjustable pressure difference switch is a micro pressure difference switch that can independently adjust the setting within a certain pressure range, or gradually replace The scope of application of the former.
The adjustable air pressure difference switch's internal diaphragm design senses pressure changes to detect small pressure changes. Switch settings or switching points can be adjusted on-site by simply using the adjustment knob and the built-in calibration visual scale. This switch is equipped with a clear cover, not only to protect the adjustment knob scale changes, but also provides IP54 protection, widely used in the ventilation and ventilation system filter protection monitoring equipment and anti-exhaust system pressure flow control.
working principle
The core technology of the micro-differential pressure switch is the sensitivity of the diaphragm to the change of gas pressure in the cavity. The switch is divided into a cavity (sensing part) and a micro switch (electrical part). The cavity diaphragm measures the pressure of the gas by The change takes place when the micro-switch of the displacement drive is opened and closed, alarm or gas flow control is implemented, and appearance technology, mechanical structure, and accurate measurement are used to evaluate the performance characteristics of the product.
Installation method
It is directly installed on the wall or cabinet body, and the monitoring environment gas is collected through the hose connection and is electrically connected with ordinary cable contacts.
Parameter performance
interface
Outer diameter 6.0mm straight pipe
medium
Empty, non-flammable or hazardous gas
Maximum working pressure
10 kPa
Installation position
Diaphragm anywhere in the vertical
Protection level
IP54 (with cover)
Operating temperature
-40° C to 85° C
Contact method
Single Pole SPST) or Single Pole Double Throw (SPDT)
Electrical indicators
Initial resistance: <400 milliohm; 1.5A (0.4A), 250Vac
Terminals
6.4 mmx 0.8 Straight Plug Terminals
Optional
Sound and light alarm function
Residual Current Circuit Breaker With Over Load Protection
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leakage breaker is suitable for the leakage protection of the line of AC 50/60Hz, rated voltage single phase 240V, rated current up to 63A. When there is human electricity shock or if the leakage current of the line exceeds the prescribed value, it will automatically cut off the power within 0.1s to protect human safety and prevent the accident due to the current leakage.
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