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Three reasons for the error of the pressure gauge
| Three reasons for the error of the pressure gauge |
| ¡¾Update Time¡¿2015-08-13 16:17:05 ¡¾Hits¡¿3572 |
Pressure gauge is used in the production of pressure measurement equipment, the use of the pressure gauge is the most important indicator of the accuracy of the pressure meter. The pressure gauge indicates whether or not there is an error, and the external factors will affect the results, in addition to a number of factors outside the pressure meter itself.
1, the pressure gauge is affected by vibration
Under the condition that the pressure gauge can not be directly caused by the vibration, the vibration will cause the deformation of the elastic element directly. The measures for preventing the vibration of the pressure gauge are mainly the installation of the buffer device and the damping device.
2, the pressure gauge is affected by the overload.
The overload operation of the pressure gauge is not only refers to the pressure gauge indicating value to reach the maximum, in fact, more than the full scale 2/3 position, the elastic element of the gauge is already in the near limit state. Pressure gauge in the condition of the overload of long-term work, its internal elastic components such as spring tube, diaphragm will be because of the long-term in the limit or near the limit of deformation and elastic weakening or even the elastic loss, and eventually permanent deformation.
3, the pressure gauge is influenced by temperature.
Pressure gauges for the measurement of the pressure is mainly rely on its internal spring tube and other elastic elements, in the higher temperature or lower environment, the pressure gauge of the elastic element will occur under the action of temperature, especially long-term work in high temperature medium pressure gauge, elastic element may occur permanent deformation, also will cause the pressure gauge display error.
Pressure gauge, is bound to minimize temperature of pressure gauge indication value of, the most direct and effective method is avoiding pressure gauge the work under the environment temperature anomalies, if there is no way to avoid should be on pressure gauge anti high temperature or cold treatment, such as pressure table installing a condensing device or a heat preservation device. |
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