Reasonable use and main items of precision digital pressure gauge

It is widely used in petroleum, chemical industry, electric power and other fields. The precision digital pressure gauge with single function can replace the original precision pointer pressure gauge. Widely used in electric power, metallurgy, petroleum, chemical industry, measurement system industry laboratory and field measurement, scientific research. It can be used to calibrate pressure (differential pressure) transmitter, precision pressure gauge, ordinary pressure gauge, sphygmomanometer, pressure reducing valve and other instruments. Moreover, it can intuitively display the pressure change of each process link, have insight into the formation of conditions in the product or medium process, monitor the safety trend in the production and operation process, and build a rapid and reliable safety guarantee through automatic interlocking or sensing device, which plays an important role in preventing accidents and ensuring personal and property safety, and is called the “eye” of safety display.

The internal structure of precision digital pressure gauge is very precise. There are many things to pay attention to in the process of use. A wrong use method often leads to product damage, a lot of functions, and even product scrap. In view of this problem, the following analysis explains the precise digital pressure gauge in the use of the process need to pay attention to what things.

The precision digital pressure gauge is installed on the equipment. The maximum range of the precision digital pressure gauge on the product line (the limit value of the scale on the dial) should be suitable for the working pressure of the equipment. The measuring range of precision digital pressure gauge is generally 1.5-3 times of the working pressure of the equipment, preferably 2 times. If the range of the selected digital pressure gauge is too large, because of the precision digital pressure gauge with the same accuracy, the larger the range is, the larger the deviation between the absolute value of the allowable error and the visual observation will be, which will affect the accuracy of the pressure reading; On the contrary, if the range of the selected digital pressure gauge is too small, and the working pressure of the equipment is equal to or close to the scale limit of the precision digital pressure gauge, the elastic element in the digital pressure gauge will be in the maximum deformation state for a long time, and it is easy to produce permanent deformation, resulting in the error increase and service life decrease of the precision digital pressure gauge. In addition, the range of precision digital pressure gauge is too small, in case of overpressure operation, the pointer will cross the maximum range and close to zero, which will make the operator have the illusion and cause more accidents. Therefore, the pressure range of dssy1802 precision digital pressure gauge should not exceed 60-70% of the scale limit. Pressure measurement range: – 0.1MPa ~ 0 ~ 60MPa (optional range for this range) connection interface: M20 × 1.5. The accuracy of precision digital pressure gauge is expressed as the percentage of allowable error in the limit value of dial scale. The accuracy level is generally marked on the dial. When selecting precision digital pressure gauge, the accuracy should be determined according to the pressure level of the equipment and the actual work needs ± 0.05% 、 ± 0.1%。 If the medium used in the measurement of precision digital pressure gauge is corrosive, different elastic element materials must be selected according to the specific temperature, concentration and other parameters of corrosive medium, otherwise the expected purpose cannot be achieved. Daily attention to the use and maintenance, regular inspection and use of records. Generally, the verification period of precision digital pressure gauge is half a year. Compulsory verification is a legal measure to ensure the reliable technical performance, accurate value transmission and effective safety production of precision digital pressure gauge.


Post time: Jun-28-2021
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