Do you know how to avoid pressure transmitter failure from selection and installation?

Do you know how to avoid pressure transmitter failure from selection and installation? The editor has encountered an abnormal situation in this regard, so I intend to share with you here, how the editor solves such a situation, and hopes to provide you with a convenient way.

  1. Avoid pressure transmitter failure from selection

  When selecting the pressure transmitter, it is necessary to pay attention to the pressure range of the measured medium and select the appropriate pressure transmitter range. In addition to the measurement range, the turndown ratio is also a very important technical indicator, which will affect the measurement accuracy of the pressure transmitter. When selecting, the appropriate range and range ratio should be selected according to the requirements. In addition, pay attention to the maximum pressure of the pressure transmitter. Generally, 1.5 times the design pressure will be selected. However, it should be noted that there will be pulses or sudden pressure increase in some working conditions. In this case, a buffer needs to be selected. As a protective device for the pressure transmitter to avoid damage to the pressure transmitter.

  At the same time, it is necessary to distinguish the measurement method and wetted material of the selected pressure transmitter according to the technological characteristics of the measured medium. When the measured medium is dry gas or pure liquid and the viscosity is not high, an ordinary pressure transmitter can be used, and two valve groups are used in front of the meter to prepare for maintenance; if the measured medium is a strong corrosive liquid, viscous For liquids, etc., you need to choose the corresponding corrosion-resistant diaphragm pressure transmitter, and you can also choose a diaphragm pressure transmitter with a convex diaphragm according to the actual situation; when measuring high/low temperature media, you should choose a split pressure transmitter , use a pressure tube or capillary for pressure measurement. When choosing the capillary pressure guiding method, we must pay attention to the requirements of operating temperature to avoid the phenomenon of pressure guiding oil vaporization or solidification in actual use.

  2. Avoid pressure transmitter failure from installation

  The position of the pressure point of the pressure transmitter is clearly stipulated in the national standard. When designing, it is necessary to strictly abide by the national standard to ensure the quality of the automation instrument project. For the specific installation method, please refer to the relevant standard documents. Expand the details.

  The above content is the detailed focus on how to avoid pressure transmitter failure in model selection. I hope it can help you. If you want to know more about flowmeters, please log in to the official website of Weihai Kunke Flow Instrument Co., Ltd. at any time. Ask for details.