Pressure gauge detection method, do you know?

Pressure gauge refers to elastic element as the sensitive element, instrument measurement indicator is higher than the environment pressure, application is very common, it almost throughout all of the industrial process and research fields. In the heat pipe network, oil and gas transmission, water supply, gas supply system, vehicle maintenance shop, etc can be seen everywhere. Especially in the process of industrial process control and technology measure, due to the flexibility of mechanical pressure gauge sensor has high mechanical strength ` convenient features such as production, makes the mechanical pressure gauge is more and more widely used. Pressure gauge measurement should choose suitable standard range table, standard range table error absolute value should be allowed no more than the 1/4 of test pressure gauge permissible error absolute value. Standard range table available spring tube type precision pressure gauge and vacuum gauge, piston type pressure gauge, such as piston vacuum pressure gauge measurement. Detection: verification of error, the method of digital pressure gauge verification value according to the marked the dividing line, gradually step up smoothly when verification ( Or step-down) When reach the detection limit value, then cut off pressure source, pressure 3 min, and then press the original fixed-point smooth step-down, Or booster) Check back in reverse chronological order. 1. Return error, on the same point check regularly in the booster ( Or step-down) And buck ( Or booster) Verification, the provisions of the permissible error absolute value. 2. Tapping displacement of each point check regularly, the booster ( Or step-down) And buck ( Or booster) After verification, the lighter case caused by changes in value is more than half of the permissible error absolute value. 3. Error value, for each inspection point in the booster ( Or step-down) And buck ( Or booster) Verification, lightweight case before and after with the standard value for the difference between the value should comply with the requirements. Note: when the booster to steady, otherwise easy to exceed range, so that the pressure gauge force is too large, lead to table completely damaged. Choice standard must select the appropriate standard, so measured accurately, otherwise the error will be too big.