Pressure transmitter selection principles of the first, from the pressure transmitter site conditions for consideration, the next we will analyze the parameters from the pressure transmitter itself to explain, choose a better quality pressure transmitter. Pressure transmitter accuracy. In the quality analysis, the accuracy of the pressure transmitter is the most important technical parameters. Pressure transmitter accuracy is related to the final result of the whole measurement system. The accuracy of the instrument in short is the accuracy of the instrument measuring value close to the true value, usually expressed in terms of relative percent error (also known as relative folding error). According to the instrumentation industry, the accuracy of the instrument is divided into a number of levels, referred to as the accuracy level, such as 0.1% level, 0.2% level, 0.5% level, 1.0% level, 1.5% level, 2.5% level and so on. The smaller the number of accuracy level, the higher the accuracy. We can understand the concept of pressure transmitter accuracy from three aspects: 1, accuracy indicates the degree of consistency between the measurement results and the true value, which reflects the combination of systematic and random errors in the measurement results. Its quantitative characteristics can be measured uncertainty (or limit error) to indicate. 2, precision indicates that under certain conditions for a number of measurements, the degree of conformity between the measurement results obtained, which reflects the degree of influence of random errors in the measurement results. 3, precision indicates the degree of the size of the systematic error in the measurement results, reflecting the prescribed conditions, the measurement results of all systematic errors in the synthesis. In terms of price, the higher the accuracy of the pressure transmitter, the more expensive it is. In the actual use of the process, if the purpose of measurement is qualitative analysis, it is not necessary to choose the absolute value of high precision pressure transmitters; if it is for quantitative analysis, must obtain accurate measured values, it is necessary to choose the accuracy level to meet the requirements of the pressure transmitter. Star Instruments Sensor Manufacturing Co., Ltd. is a collection of research and development, production, sales as one of the high-tech enterprises. Specializing in the production of pressure transmitters, level transmitters, temperature transmitters, temperature and humidity transmitters, differential pressure transmitters, soil moisture transmitters, 3051 transmitters and related instrumentation accessories. Many products under the brand of Star Instruments have obtained a number of patents issued by the state, such as CE certification, IS9001 certification, SGS certification, TüV SüD certification, explosion-proof certification and so on. For product consultation, product customization, agency, technical inquiries, quotes, etc., please contact Star Instruments: 400-600-4496 !