Analyses what are the problems that should pay attention to model selection of the pressure transmitter

In the selection of pressure transmitter, we need to pay attention to what issues? This is on the model selection of the pressure transmitter, will certainly encounter problems, so below small make up for the answer, for this small make up also consult without XiHui xin thermal meter co. , LTD. , the related technical personnel, in order to better. A: good to determine the value of measuring pressure required, and then select the ratio to 1. About five times the pressure transmission, because in many systems, volatility is irregular fluctuation pressure, if beyond the value of pressure transmitter calibration, will cause damage to pressure vessel, reduce its service life. Although we can use a buffer to remove burrs pressure, but it will reduce the induction rate, so it's not reasonable. Has two: measuring the pressure of the medium pressure transmitter, is, we need to consider if it is a viscous liquid, or mud, will plug pressure interface, corrosion and corrosive substance will pressure transmitter of the material. So, it is related to choose isolation membrane, or direct contact with the media. General contact medium part of pressure transmitter is adopted 316 stainless steel, if there is no corrosive medium, you don't need to take measures, but if you have, you will need to adopt chemical seal to protect pressure transmitter, from corrosion. Three: nonlinearity, hysteresis and repeatability, etc, will affect the accuracy of pressure transmitter. Is, in general, the higher accuracy, is more expensive. Four aspects: general pressure transmitter can calibrate two temperature range, one is the normal operating temperature range, the other one is the temperature in the range of compensation, the former is easy to understand, while the scope for the latter than the former usually small, and it must reach the performance index, so we should note when selection. In terms of five: the excitation voltage is determined by the output type, so in this aspect to consider working voltage and system cost; In addition, its connection with other electronic equipment, also take into account that is connected by short or long? Long distance connection, whether to need to use the connector? All these problems is to consider. Six aspects: considering the encapsulation of pressure transmitter, tend to ignore its frame, it is need to pay attention to, because if not taken into consideration, in the later use, will bring some problems or trouble, actually do more harm than good. ( Figure/http://www. wuxiyibiao。 com/)