Precision digital pressure gauge instruments are common measuring instruments and are widely used in various fields. It can intuitively display the pressure changes in various process steps, insight into the formation of conditions in the product or medium process, monitor the safety trends in the production process, and build a fast and reliable security guarantee through automatic interlocking or sensing devices. It has played an important role in preventing accidents and ensuring the safety of people and property. It is called the "eyes" of security displays.
(1) Digital pressure gauges installed on boilers and pressure vessels. The maximum range (scale limit value on the dial) should be compatible with the working pressure of the equipment. The range of digital pressure gauges is generally 1.5 to 3 times the working pressure of the equipment, preferably 2 times. If the digital pressure gauge selected is too large, due to the same precision digital pressure gauge, the larger the range, the greater the absolute value of the allowable error and the deviation from the naked eye observation will affect the accuracy of the pressure reading; on the contrary, if the selected If the digital gauge is too small and the working pressure of the equipment is equal to or close to the scale limit of the digital pressure gauge, the elastic element in the digital pressure gauge will be in a state of maximum deformation for a long time, and it will easily cause permanent deformation, causing an increase in the error of the digital pressure gauge. Large and reduced service life. In addition, the scale of the digital pressure gauge is too small. In case of overpressure operation, the pointer will cross the maximum range close to zero, causing the operator to have an illusion and cause a greater accident. Therefore, the pressure range of the digital pressure gauge should not exceed 60-70% of the scale limit.
(2) The precision of a precision digital pressure gauge for work is expressed in terms of the allowable error as a percentage of the dial scale limit value. Accuracy grades are generally marked on the dial. When selecting a digital pressure gauge, the accuracy should be determined according to the pressure level of the equipment and the actual work requirements.
(3) Dial diameter In order for the operator to accurately see the pressure value, the diameter of the dial of the digital pressure gauge should not be too small. If the digital pressure gauge is installed higher or farther from the post, the diameter of the dial should increase.
(4) If the medium used for measuring precision digital pressure gauges is corrosive, different elastic component materials must be selected according to the specific temperature, concentration, and other parameters of the corrosive medium. Otherwise, the intended purpose may not be achieved.
(5) Pay attention to the use of daily maintenance, regular inspection, cleaning and record of usage.
(6) The general verification period for a precision digital pressure gauge is six months. Mandatory testing is a legal measure to ensure that the technical performance of digital pressure gauges is reliable, that the value is transmitted accurately, and that production safety is effectively guaranteed.

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