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The correct selection of stainless steel pressure gauges mainly includes determining the type, range, range, accuracy and sensitivity of the instrument, its dimensions and whether it requires remote transmission and other functions such as indication, recording, adjustment, alarm, etc.
Installation and use precautions
(1) The instrument shall be installed perpendicular to the horizontal plane;
(2) The metering point is at the same level as the meter installation, and the correction of the additional height error is considered;
(3) The distance between the installation point of the instrument and the measuring point should be as short as possible to avoid delaying the indication;
(4) to ensure the sealing, there should be no leakage, especially flammable and explosive gas medium and toxic and harmful medium.
The instrument shall be supplemented with additional equipment when used in the following cases, but no additional error shall be caused, otherwise the correction shall be considered.
(1) In order to ensure that the instrument is not affected by the measured medium or the viscosity is too large, crystallization, should be installed with isolation device;
(2) To ensure that the meter is not affected by the abrupt change of the measured medium or the pulsating pressure, a buffer is added. Especially in the case of a sharp increase in pressure and a sharp drop in pressure, Zui easily makes the pressure gauge damaged and scrapped, and even the spring tube is cracked and a leak occurs;
(3) In order to ensure that the instrument is not affected by vibration, the pressure gauge shall be equipped with a vibration damping device and a fixing device;
(4) In order to ensure that the meter is not affected by the high temperature of the measured medium, a pipe-filling device filled with liquid should be installed;
(5) Special special instruments are strictly forbidden to use, and it is strictly forbidden to carry out measurements on devices without special reliability. It is also strictly forbidden to use ordinary pressure gauges for pressure measurement of special media;
(6) For the newly purchased pressure detecting instrument, before the installation and use, it is necessary to carry out the metrological verification to prevent the vibration, damage or other factors of the pressure instrument from being damaged during transportation.