What are the pressure gauge specifications

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 working principle of pressure gauge is a sensitive element (by table Bourdon tubes, bellows, bellows) Elastic deformation, the pressure deformation by the transformation of movement in table to Pointers, cause the hands to display the pressure. What are the pressure gauge specification? Let below small make up to you to introduce: pressure gauge shell nominal diameter ( mm) Are: ￠40, 50, 60 ￠, ￠100 ￠, etc. ; Pressure gauge structure forms are: the radial, axial radial, axial belt in front, behind, the radial with the front, etc. ; China general pressure gauge used in industry is divided into four level of accuracy, precision grade are: 1. Level 0, 1. Level 6, 2. Level 5, 4. Level 0; Pressure gauge precision grade selection should be based on process allows the maximum absolute error and selected the most instrument, calculate the instrument allows the maximum error of the reference, in the regulations of the state, the accuracy grade of determine the accuracy of the instrument. In general, chooses the precision instrument, measurement results are more accurate and reliable. But cannot think of chosen instrument accuracy is higher, the better, because the precision of the instrument in general, the more expensive, operation and maintenance, the more trouble.