With the widespread use of 3051 pressure transmitter, 3051 pressure transmitter on the market quality varies greatly, we changed how to select high-quality 3051 pressure transmitter, Here I share some of the principles on the selection method 3051 pressure transmitter . First, we must determine the measurement media, 3051 pressure transmitter [measure the extent of erosion of media, select the appropriate size of the transmitter according to the degree of erosion, generally non-acid and alkali can be used in the isolation unit, stainless steel transmission , otherwise the transmitter can select special alloy designed specifically for anti-erosion and so on. Then, to consider when determining the measurement range and measurement methods generally choose the actual measurement range measurement range, over-voltage measurement range, select the range to a maximum measurement range of subject, taking into account the size of the over-voltage measurement range. Next, to determine the accuracy range, the compensated temperature range, temperature range. According to the minimum you need to measure the accuracy of, generally slightly higher than the required minimum accuracy select products. At the same time the need to consider the long-term chaos indicators selected, the so-called normal operating temperature range that is measured when the medium temperature range, temperature range that may be thrown maximum use temperature range, temperature range models are generally slightly larger than the required selection Series Compensated temperature range Operating temperature range accuracy. Measurement range, the required accuracy and measurement functions; measuring instrument facing environments such as the petrochemical industry environment, there may be the presence of heat (toxic) and explosion hazard atmosphere, a higher ambient temperature; ultrasonic flowmeter measured medium The physical and chemical properties and the state, such as acids, alkalis, sticky, easy to crystallization and solidification vaporization and other conditions; manipulate premise changes, such as changes in the medium temperature, pressure and concentration. Sometimes also take into account the parameters from the drive to reach normal production, the vapor and liquid concentration and density changes; the structure of the measured object container, shape, size, equipment, accessories and all kinds of import and export container feed nozzle must considerations, such as towers, solution tank, reactor, boiler drum, vertical tank, tank, etc; other requirements, such as environmental and health requirements; engineering instrument selection to have the same considerations require minimize varieties, reduce spare parts, in order to facilitate treatment. In summary, the selection of the transmitter, to be technically feasible and economically to be fair, the management should facilitate

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