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| Difference between pressure transmitter and pressure sensor |
| 2011-8-30 9:30:54 |
从 一般 意义上 说 也属于压力传感器，但是 它 输出 的 信号为标准通用的信号，如4～20mA,1～５V等， 并且 可以远距离传送， 还 可以与标准仪表 配，同时它的压力值 进行过标定，用户 只 需要通过仪表的量程设定即可使用 。 Pressure transmitters are also pressure sensors in a general sense , but the signals they output are standard and universal signals, such as 4-20mA, 1-5V, etc., and can be transmitted over long distances. They can also be equipped with standard instruments . The pressure value has been calibrated, and the user only needs to use the range setting of the meter to use it .
器 的核心元件，通常专指是非标准mV信号输出的元件级产品 。 The pressure sensor is the core component of the pressure transmitter , which usually refers to the component-level products with non-standard mV signal output . 信号的非标准性， 所以 用户使用时需要进行压力标定和设计专门的信号处理电路； 但是 由于信号微弱， 因此 距离较长时需要增加放大器 。 Because of the non-standard nature of the signal, users need to perform pressure calibration and design a special signal processing circuit when using it; however, because the signal is weak, an amplifier needs to be added when the distance is long .
器与传感器的区别： Difference between transmitter and sensor:
： 敏感元件和转换元件 。 The sensor consists of two parts : a sensing element and a conversion element . (1) Sensitive element refers to the part that can directly sense or respond to the measured part in the sensor; (2) Conversion element refers to the part of the sensor that converts the measured or responded part of the sensitive element into an electrical signal suitable for transmission or measurement. But because the output signal of the sensor is generally weak, it needs to be modulated and amplified. With the development of modern integrated technology, circuits and power circuits are also installed inside the sensor together. 。 So the sensor can output the available signals for easy processing and transmission .
There are many types of transmitters. The transmitters used in industrial control instruments are mainly temperature transmitters , pressure transmitters , flow transmitters , current transmitters, voltage transmitters and so on.