Shanghai Yichuanpressure gaugeThe determination of the measuring range is mainly based on the magnitude of the measured pressure, taking into account possible overpressure situations, to ensure that the instrument operates within a safe and reliable range, while leaving some room for error.

When measuring stable pressure, the maximum working pressure cannot exceed 3/4 of the instrument range, and when measuring pulsating pressure, the maximum working pressure cannot exceed 2/3 of the instrument range; When measuring high pressure, it cannot exceed 3/5 of the instrument range. To ensure measurement accuracy, the minimum working pressure should not be less than 1/3 of the measuring range. The maximum and minimum working pressures cannot meet the above requirements simultaneously, and the maximum working pressure condition should be met first.

The unified range level of pressure detection instruments in China is divided into 1Kpa, 1.6Kpa, 2.5Kpa, 4.0Kpa, 6.0Kpa and their multiples of 10n. The accuracy of pressure instruments is determined based on the maximum measurement error allowed by the production process. The accuracy levels of pressure instruments in China are 0.005, 0.02, 0.03, 0.05, 0.1, 0.16, 0.2, 0.35, 0.5, 1.0, 1.5, 2.5, 4.0, etc. The accuracy of industrial instruments is generally below 0.5. For more details, please visit our company's website: Pressure Switch First Station, Pressure Controller Network, Pressure Switch Network