There are some other common problems that occur during the verification process
1. Pointer backwards. 有裂缝。 If the checker leaks oil or the oil cup needle valve is not smooth, the seal is not good, or the spring tube may be cracked. These failures are common and easy to resolve.
破裂导致大量漏油、堵塞了 2. The pointer does not move or rarely moves. There are several reasons: the center hole of the seal gasket of the calibrator is blocked, the working medium cannot be introduced into the pressure gauge, the calibrator valve is not opened, and the top of the calibrator screw rod. Damaged rubber bowl or broken spring tube caused a lot of oil leakage and blockage
或传输通道、校验器油杯内介质太脏、指针松动，指针的一端碰到刻度盘。 The spring tube or transmission channel, the medium in the oil cup of the calibrator is too dirty, the pointer is loose, and one end of the pointer touches the dial.
3. The pointer does not return to zero, the return error and the tapping displacement are out of tolerance. The hairspring is not tightened or enlarged enough, or the pointer is loose. The adjustment of the hairspring must be moderate, otherwise, if the power is too large, the hairspring will be deformed.
4. The pointer shaft is tilted, and the curve rubs against the scale on one side; the needle jump phenomenon. The teeth of the sector gear may be rusted, worn, and dirt. .