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Seismic pressure gauge is suitable for severe vibration environment, can withstand the pulsation of the medium, impact and sudden unloading, instrument indicator is stable and clear. Widely used in machinery, petroleum, chemical, metallurgy, mining, power and other departments, measuring the pressure of non-corrosive media on copper and copper alloys. Then what are the installation precautions? Here we come to understand it.
1. The ambient temperature of the instrument is -40~70°C, and the relative humidity is no more than 80%. If it deviates from the normal use temperature by 20±5°C, the additional temperature error must be included.
2. The instrument must be installed vertically, trying to maintain the same level as the measurement point, if the difference is too high to account for the additional error caused by the liquid column, the measurement of gas may not need to be considered. During installation, the rear explosion vent of the case should be blocked so as not to affect the explosion-proof performance.
3. Measurement range for normal use of the instrument: 3/4 of the upper limit of measurement under static pressure and 2/3 of the upper limit of measurement under fluctuation. In the case of the above two pressures, the measurement of a large pressure gauge should not be lower than 1/3 of the lower limit, and the vacuum portion should be used when measuring vacuum.
4. When in use, it should be repaired or contacted by the manufacturer for repairs in the event of malfunctions such as failure of the instrument pointer or loose internal parts and failure to work properly.
5. The instrument should avoid vibration and collision to avoid damage.
6. When ordering, please specify: model and name of the instrument; measurement range of the instrument; precision grade of the instrument deviates from the positive packaging requirements and others.
7. According to user requirements for special design.
8. Before installation, check whether the model, specification, and accuracy of the instrument meet the requirements of the instrument. Check whether the connector thread and the installed female thread of the meter are the same.
9. The pressure gauge should be installed vertically with an inclination of no more than 30° and try to maintain the same level as the measurement point so as to avoid indication error.
10. After installation, in the absence of pressure, observe whether the pointer is in the zero position or close to the disk staple, otherwise it is not appropriate to use.
11. When measuring steam pressure, the lower end of the pressure gauge should be equipped with an annular pipe, and water should be used to transfer steam pressure during use to prevent the high-temperature steam from rushing into the spring pipe, affecting the accuracy of the meter, or inadvertently melting the solder, causing the meter to leak and cause an accident. Scald people.