Use environment and maintenance of diaphragm pressure gauge

Because the diaphragm pressure gauge system uses the filled sealing liquid as the medium to transmit pressure, the expansion number, strength and pressure receiving part of the diaphragm pressure gauge are related to the temperature of the medium due to the influence of the sealing liquid on the temperature, especially for the diaphragm pressure gauge with low range.

Generally, the temperature difference of the compression part is not more than 0.1%/℃. Therefore, the accuracy of diaphragm pressure gauge affected by temperature is the sum of diaphragm and spring tube. However, the isolated diaphragm pressure gauge has a flexible connecting pipe, and the pressure-receiving part is different from the pressure gauge, which will produce a liquid level difference, thus affecting the accuracy of the diaphragm pressure gauge.

Installation and maintenance

(1) Diaphragm pressure gauge must be installed vertically, and collision and vibration should be avoided during installation.

(2) The diaphragm pressure gauge is suitable for installation in places where the ambient temperature is-40℃ ~+70℃ and the relative humidity is not more than 80%. Please install the diaphragm pressure gauge condensation elbow and radiator when it is used at high temperature above 180℃.

(3) When selecting diaphragm pressure gauges, it should be considered that the stable load measured by pressure gauges should not exceed 2/3 of the upper limit of measurement, and the fluctuating pressure should not exceed 1/2 of the upper limit of measurement, and the low pressure should not be lower than 1/3 of the upper limit of measurement in either case.

(4) Isolation devices and buffer devices should be added when measuring corrosive, possibly crystallized media, media with high viscosity and drastic fluctuation pressure.

(5) The instrument shall be calibrated regularly (normally once every six months).

(6) Every time you customize the diaphragm pressure gauge, you must explain the medium to be measured, so that the diaphragm pressure gauge can be correctly selected.

Explosion-proof electric contact pressure gauge has anti-corrosion effect.

Release date: April 22, 2021 Author: Wuxi Quanjun Instrument Co., Ltd. Click: 52

Explosion-proof electric contact pressure gauge is a commonly used pressure gauge commodity, which is mainly used in petroleum, chemical industry, metallurgy, power station, machinery and other industrial departments or electromechanical equipment to measure the pressure of various fluid media without explosion risk. There are many types of explosion-proof electric contact pressure gauges. Today, Wuxi Quanjun Instrument Co., Ltd. will introduce the various types of explosion-proof electric contact pressure gauges in detail.

Product types of explosion-proof electric contact pressure gauges:

In view of the fact that this series of appearance not only has the characteristics of novel planning, reliable structure, complete category standard, good action stability and strong adaptability, but also has the advantages of rich measurement and control, simple device and small protection, etc., therefore, it is an unparalleled pressure measurement and control appearance of general pressure controllers without instructions, switching adjustment and external setting equipment.

Explosion-proof electric contact pressure gauge

In order to meet the requirements of different measured targets (such as earthquake resistance, corrosion resistance and explosion protection), earthquake-resistant and explosion-proof electric contact pressure gauges, corrosion-resistant and explosion-proof electric contact pressure gauges and so on can be selected.

Ordinary explosion-proof electric contact pressure gauge is suitable for measuring the pressure of gases and liquids that have no corrosive effect on copper alloys and iron.

The main pressure measuring elements and outer shell of the anti-corrosion and explosion-proof electric contact pressure gauge are all made of stainless steel, which is suitable for measuring the pressure of highly corrosive gases and liquids.

Explosion-proof electric contact pressure gauge is suitable for dangerous places with explosive mixture in the environment.

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