Factors which affect measurement accuracy of pressure gauge thermometer factory group and processing method

One, the influence of temperature, pressure gauge pressure is a function of pressure spring bending deformation. If the pipe into the spring medium temperature is higher, the effect of temperature also makes pipe bending deformation. And high temperature medium ACTS on the spring pipe for a long time, still can make bend to produce permanent deformation. All these will be harmful to measure. Prevention method, is between the pressure gauge and drum, equipped with different forms of trap tube, to accumulate the condensate, syphon prevent steam directly into the spring. Second, frozen, the influence of vibration pressure gauge placed on the outside of the boiler, the greatly influenced by external conditions. If the outside temperature is too low, frozen, or from a variety of vibration, boiler and pressure gauge internal will have an effect on sensitivity and accuracy of the gauge. Prevention: one is to be equipped with thermal insulation device; The second is to install the buffer device, such as the three-way cock is one kind of shockproof device. After the long work result in elastic weakened or lost, or even produce permanent deformation. If pressure gauge pointer always in close to or more than two-thirds of the full scale the dial position, long-term work of pressure gauge is unfavorable. Way to prevent is, first selecting pressure gauge, range to choose reasonable, best for working pressure in the range of 1/2. Secondly to strictly prevent overpressure of boiler operation.