Pressure sensors usually refer to component-level products that are non-standard mV signal outputs and are the core components of pressure transmission. Due to the non-standard nature of the signal, the user needs to perform pressure calibration and design special signal processing circuits; because the signal is weak, the distance Longer need to increase the amplifier;
Pressure Transmitter also belongs to the pressure sensor from the written sense, but its output signal is a standard universal signal, such as 4 ~ 20mA, 1 ~ 5V, 0-5V, 0-10V, etc., can be transmitted long distances, and can be with the standard The meter set has been calibrated at the same time as its pressure value. The user needs to use the meter's range setting to use it.
The difference between transmitter and sensor:
The sensor consists of two parts, namely the sensor and the converter. Among them, the sensitive element refers to the part in the sensor that can directly sense or respond to the measured part; the conversion element refers to the part of the sensor that converts the sensing or response of the sensitive element into an electrical signal suitable for transmission or measurement. Because the output signal of the sensor is generally very weak, it needs to modulate and amplify it. With the development of integrated technology, circuits and power circuits are also installed inside the sensor. In this way, the sensor can output signals that are easy to process and transmit.
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, etc.
June 09, 2022
