把壓力信號傳到電子設備，進而在計算機顯示壓力，其原理大致是：

如將水壓這種壓力的力學信號轉變成電壓或電流（一般是0-5V或者4-20mA）這樣的電子信號，壓力和電壓或電流大小成線性關系，一般是正比關系所以，變送器輸出的電壓或電流隨壓力增大而增大。

3151智能型壓力/差壓變送器/類型

以量程范圍：微壓變送器、壓力變送器

以測量方式：差壓變送器、壓力變送器

以測量要求：絕壓變送器、表壓變送器、相對表壓變送器。

大中華區客戶推薦閱讀：

In general, the pressure transmitter often refers to the pressure transmitter and the differential pressure transmitter, which are mainly composed of the sensor of the pressure measuring element, the measuring circuit and the process connection. which can convert the received pressure signals such as gas and liquid into standard current and voltage signals (4~20 mADC) to supply secondary instruments such as indicator alarm, recorder, regulator for measurement, indication and process regulation.

 The pressure transmitter can be divided into general pressure transmitter (-100 Pa~120 MPa) and differential pressure transmitter (0.1~1.5 kPa) according to the range of pressure measurement.
 3151 Intelligent Pressure/Difference Transmitter / Main Role
 The principle of transmitting pressure signals to electronic devices and then displaying pressure on a computer is:
 When a mechanical signal of pressure such as water pressure is converted into an electronic signal such as a voltage or current (usually 0-5 V or 4-20 mA), the pressure and voltage or current are linearly proportional.
 3151 Intelligent pressure/differential pressure transmitter/type
 Range: Micro pressure transmitter, pressure transmitter
 Measurement: differential pressure transmitter, pressure transmitter
 to measurement requirements: absolute pressure transmitter, gauge pressure transmitter, relative gauge pressure transmitter.