pressure switch detection device

1：Defects of traditional craftsmanship
The micro pressure switch mainly detects the pressure or differential pressure of the controlled object, and gives the system a feedback signal when the pressure or differential pressure reach the set value.In the actual production process, it is necessary to set the operating pressure value and then perform a full inspection.The general production process is to connect the product to a pressure source, and observe whether the product will act in real time by slowly changing the output pressure of the pressure source.When the pressure switch acts, quickly observe the pressure value of the pressure source to see if it meets the tolerance range of the set value.

The disadvantage of this process is low efficiency and the risk of human error such as visual fatigue in manual operation.

2：A new detection device

The new pressure switch detection device mainly solves the problems of low efficiency and high error rate of current pressure switch action pressure detection.

The new type of pressure switch detection device, including a pressure mechanism and an indicating mechanism,The pressure mechanism includes a first air pipe and a second air pipe communicating with the air source,The first air pipe is provided with a first air pressure regulator, the second air pipe is provided with a second air pressure regulator, and also includes a toggle switch,the inlet of the switch is connected with the first air pipe and the second air pipe, the outlet of the switch is connected with an air outlet, and the air outlet is connected with the pressure switch to be tested;

The indicating mechanism includes a first electrical connector and a second electrical connector connected with the power source, the first electrical connector and the second electrical connector are electrically connected with the pressure switch to be tested, and an indicator, which is connected in series with the pressure switch to be tested.

The first air pressure regulator includes a first pressure reducing valve and a negative pressure generator, the second air pressure regulator includes a second pressure reducing valve and a negative pressure generator, and the air outlet pipe is connected with the negative pressure generator.

3:The pressure switch detection  steps:

   Step 1. Connect the air outlet pipe to the air inlet of the pressure switch, and connect the first and second electrical connections to the positive and negative poles of the       pressure switch.

Step 2: Connect the first air pipe with the outlet pipe by operating the switch, and adjust the first air pressure regulator to make the air pressure discharged from the first air pipe be the pressure p1 ( the upper operating value) .At this time, the indicator does not light up, the pressure switch to be tested is unqualified,

Step 3. Connect the second air pipe with the outlet pipe by operating the switch. Based on the lower limit action value of the pressure switch to be tested, adjust the second air pressure regulator so that the air pressure discharged from the second air pipe is the lower limit action value pressure p2;If the indicator is on at this time, the pressure switch to be tested is unqualified; if the indicator is off at this time, the pressure switch to be tested is qualified.

4:advantages of the new pressure detection device

The advantages of the new pressure detection device are: to provide a pressure switch action pressure detection device and method, connect the air outlet pipe to the air inlet of the pressure switch, and connect the first and second electrical connections to the positive and negative electrodes of the pressure switch. Then, the pressure switch is detected by the switch, which has simple structure, convenient use and high work efficiency.