How about the precision of the ordinary pressure gauge?

General pressure gauge can live shows stress, intuitive and convenient; Safe and reliable, long life, fast reading, favored by the customers to buy used, pressure gauge fields widely used and can be used in industry, petroleum, chemical industry, heating system, pipe pneumatic pipeline and its auxiliary equipment, instrument, etc. Pressure gauge precision grade of tubing and casing outside diameter size, diameter size of 40 and 60 mm gauge for 2 mm. Level 5, the size of the outer diameter is 100 mm and 150 mm gauges generally to 1. Level 6. Because more than ordinary pressure gauge for work with table, the instrument accuracy is not high, so if you choose the meter diameter is basically determines the precision of the instrument. Selection of ordinary pressure gauge precision grade. According to the process in the production of the allowed maximum absolute error to determine. In general, the higher the instrument precision grade, the price is more expensive, and the higher operation and maintenance requirements. Therefore, when the choice should be on the premise of meet the requirements, as far as possible choose low precision, simple structure, low price and durable pressure gauge. Using general pressure gauge note: pressure gauges need to clean them regularly; In order to guarantee the accuracy of its original without distortion, dissemination should be replaced in a timely manner, to ensure that the correct, safe and reliable.