Anhui Star Control Instrument Co., Ltd.

Anhui Star Control Instrument Co., Ltd.

Troubleshooting of seismic pressure gauges

Seismic pressure gauges are suitable for measuring the pressure or negative pressure of various corrosive, non-solidified or non-crystalline fluid media. Corrosion resistance depends on the diaphragm material.
Troubleshooting
First, the pointer jitter is large. Reasons: 1. The pressure of the measured medium is large; 2. The installation position of the pressure gauge is large.
Second, the pressure gauge has no indication. Reasons: 1. The shut-off valve on the pressure guiding tube is not open; 2. The pressure guiding tube is blocked; 3. The dirt in the spring tube joint is excessively blocked and blocked; 4. The spring tube is cracked; 5. The center tooth and the fan tooth wear. Too much to be able to engage.
Third, the pressure indication error is not uniform. Reasons: 1. The deformation of the spring tube is invalid; 2. The free end of the spring tube and the sector gear, the gear ratio of the connecting rod is improperly adjusted.
Fourth, the pressure gauge pointer has a beating or sluggish phenomenon. Reasons: 1. The pointer has a friction with the surface glass or the scale; 2. The central gear shaft is bent; 3. The two gears are meshed with dirt; 4. The movable screw between the connecting rod and the fan gear is not flexible.
5. After the pressure is removed, the pointer cannot be restored to zero. Reasons: 1. The pointer is bent; 2. The hairspring is short; 3, the pointer is loose; 4. The transmission gear has a friction.
Sixth, the transmission ratio is out of adjustment.
7. The pressure gauge indication is low. Reasons: 1. The gear ratio is out of balance; 2. The spring tube has leakage; 3. The pointer or transmission mechanism has friction; 4. The pressure guiding pipeline has leakage.
Eight, the pointer can not be indicated to the upper limit. Reasons: 1. The transmission ratio is small; 2. The movement is fixed at the position of the machine base; 3. The spring tube is not properly welded.
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