Should from what respect to choose pressure gauge?

Detection instrument is an equipment standards, so it is important to pay special attention to when selecting! Selection of pressure gauge should be according to the requirements of process production process for pressure measurement, based on the principles of economic, reasonable for instrument type, model, range, accuracy grade, etc. 1. The selection of instrument accuracy level. 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. 2. The choice of instrument type. Mainly from two aspects of meet the requirements of production and price consideration. For example, is the need for in situ instructions or need remote transmission, automatic recording, or the police; The physical and chemical properties of measured medium ( Such as corrosion resistance, temperature, viscosity size, degree of smudginess, flammable and explosive, etc. ) If they have special request for measurement of generalized table; The site environment suite ( Such as high temperature, electromagnetic field and vibration on site installation conditions) Whether have special requirements for instrument type, etc. 3. The determination of instrument measuring range. To limit to the range of the upper limit value of the instrument calibration, he shows that the instrument can be the parameters to be measured in accordance with the provisions, precision measuring range. In measuring the pressure, for example, to avoid the sensing element of bourdon tube pressure gauges overload and destroyed, the upper limit of pressure gauge should be possible maximum pressure value in the above process. In addition, when choosing instrument, must also consider enough leeway. According to the regulation, in the case of measured pressure is smooth, its maximum shall not exceed 2/3 of pressure gauge range; When measuring the pressure of high pressure, volatile, the maximum working pressure shall not exceed 3/5 of the range. Through the introduction of the above is for pressure gauges have further understanding, the above three aspects is to choose the need to pay attention to three aspects, hope to can help your choice!