What is the difference between a sensor and a transmitter?

Sensors and transmitters play an important role in the field of automatic control. Transmitters are developed from sensors. They are both related and different. Next, let’s share it briefly.


Sensor is a device that converts physical signal into electrical signal. It is mainly composed of sensitive element, conversion element, conversion circuit and auxiliary power supply. It has the characteristics of miniaturization, digitization and intelligence.


Transmitter is an instrument that converts non-standard electrical signals into standard electrical signals. It is mainly composed of measurement part, amplifier and feedback part.

Difference between sensor and transmitter

1. Wiring system and power supply: the sensors have two-wire system, three wire system and four wire system. Some need additional power supply, and some do not need power supply. The transmitter is a two-wire system, and the power supply and signal are the same group of wires.

2. Signal: the signal output by the sensor is a non-standard electrical signal, and the transmitter outputs a standard electrical signal.

The difference between sensors and transmitters is shared here. I hope it will be helpful to you.

(this article is compiled from CSDN blog aaaaatiger, Baidu Encyclopedia and personal library)

Editor in charge: Tzh

Leave a Reply

Your email address will not be published. Required fields are marked *