Test pressure gauge

Pressure gauge, English name: pressure the gauge) Refers to elastic element as the sensitive element, measure and instructions above environment pressure meter, the widespread application, 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 and production is convenient wait for a characteristic, make the mechanical pressure gauge is widely used. The points for attention during the inspection gauge has the following points: one, the pressure gauge accuracy inspection take a range of 0 ~ 25%, 76, 26 ~ 75% ~ 100% of a bit, testing accuracy meets the requirements. Pointer process should be smooth, no jump needle, stagnation phenomenon. Second, the pressure gauge to zero inspection pointer should be within the zero mark line; Limited check nails, nail should be close to the limit, and within the zero mark line. Three, pressure gauge visual inspection: visible parts have no obvious blemishes, scratch or damage. Four CARDS, pressure table test scale, brand and color in accordance with customer requirements; Requirement for printing quality, information on the card printing content complete and clear. Five, the pressure tap thread joint inspection cannot fall without and bald and the phenomena of teeth grinding. Using vernier caliper and thread ring gauge inspection joint is in line with the requirements. Six, pressure unit inspection, inspection table material meets the customer's requirements, table should maintain a transparent light, no oil, scratches. Seven, the structure of the pressure gauge inspection installation, pan, cover, inside the machine, the pointer is in line with the requirements. Pressure gauge must be vertical when installation: installation should be used when the 17 mm wrench to tighten, should not strong torsional case; Transportation should avoid collision.