Common faults and solutions of Glycerine filled manometer

• Posted by okate cixi August 11, 2021 - Filed in Other - #silicone filled pressure gauge，Glycerine filled manometer  - 917 views

  　　Common faults and solutions of Glycerine filled manometer

  　　1. Stuck stitches and skip stitches

  　　The pointer of the Glycerine-filled manometer sometimes jumps or becomes sluggish. The reasons for this situation may be: friction between the pointer and the watch glass or scale; the central gear shaft is bent; the two gears mesh with dirt; the movable screw between the connecting rod and the sector gear is not flexible. In this case, check whether there are stains inside the pressure gauge, eliminate the influence of materials, and avoid and solve the problems of stuck and missing needles. At the same time, check the cleanliness of the Glycerine filled manometer frequently to prevent small debris from affecting the accuracy of the value.

  　　2. The pointer moves when clicked

  　　In the process of calibrating the Glycerine-filled manometer, tapping will cause the pointer of the pressure gauge to move and fail to return. This situation will affect the accuracy of the value and the efficiency of verification. When the pressure of the pressure gauge does not exist, the pointer cannot point to zero. The reasons for this situation may be: the pointer is bent; the balance spring is not strong enough; the pointer is not strong enough; there is the resistance between the transmission gears. The reason why the pointer cannot point to the maximum scale: the transmission ratio is small; the movement is not fixed in the frame position; the spring tube welding position is improper. You can check whether the internal parts of the Glycerine-filled manometer are in good condition, and check whether the pressure gauge is loose or has friction to solve this problem.

  　　3. No indication or large jitter

  　　When the Glycerine-filled manometer does not display a value, it may be caused by the following reasons: the stop valve on the pressure guiding tube is not opened; the pressure guiding tube is not smooth; the spring tube joint is blocked; the spring tube is broken. At this time, it can be avoided by checking the pressure guiding tube, cleaning the spring stains, and replacing damaged parts. When the pressure gauge pointer vibrates violently, this situation may be caused by the following reasons: The detected medium pressure is large; the installation position of the pressure gauge is affected by external forces. In this case, it is necessary to reduce the true range around the press.

  　　4. The command speed is different

  　　This phenomenon occurs because of some errors. You can change the angle between the connecting rod and the sector teeth, or turn the movement clockwise to change the Glycerine-filled manometer pointer to indicate different situations.

  　　5. The detected error is increased or decreased proportionally

  　　This situation is mostly caused by the transmission ratio of the Glycerine-filled manometer, which can be solved by adjusting the screw near the value.

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