Analysis of Common Faults and Problems of Seismic Pressure Gauges

Analysis of Common Faults and Problems of Seismic Pressure Gauges
First, shock-proof pressure gauge pointer jitter: 1, measured medium pressure; 2, pressure gauge installation location vibration. Second, the earthquake pressure gauge without instructions: 1, the pressure tube on the shut-off valve is not open; 2, pressure tube blockage; 3, the spring pipe joints within the excessive fouling and fouling; 4, spring pipe cracking; 5, The center tooth and the sector tooth wear too much to mesh. Third, the pressure gauge pressure indication error inhomogeneity: 1, spring tube deformation failure; 2, spring tube free end and sector gear, connecting rod transmission ratio is not properly adjusted. Fourth, shock-proof pressure gauge pointer jump or sluggish phenomenon: 1, the pointer and the surface of the glass or scale touch Capricorn; 2, the central gear shaft bending; 3, two gear mesh with dirt; 4, connecting rod and fan gear The activity screws are not flexible. 5. When the pressure of the pressure gauge is removed, the pointer cannot be restored to zero: 1. The pointer is bent; 2. The spring force is short; 3. The pointer is loose; 4. The transmission gear has a friction. Sixth, the transmission ratio is misaligned. Seventh, the pressure gauge indication is low: 1. The gear ratio is out of adjustment; 2. The spring tube has leakage; 3. The pointer or transmission mechanism has a friction element; 4. The pressure guiding pipeline is leaked. Eight, shock pressure gauge pointer can not be indicated to the upper limit scale: 1, the transmission ratio is small; 2, the movement of the fixed position in the base is not appropriate; 3, the wrong position of the spring tube welding.

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