Which kind of sensor to choose: a transducer or a transmitter?

Before choosing a sensor, you need to know the difference between a transducer and a transmitter.

The transducer converts non-electrical physical quantities such as temperature, pressure, liquid level, etc. into electrical signals or transmits physical quantities such as pressure, liquid level, etc. directly to the transmitter.
The transmitter amplifies the weak electrical signal collected by the sensor to transmit or activate the control element. Or a signal source that converts the non-electricity input from the transducer into an electrical signal and amplifies it at the same time for remote measurement and control. Analog quantities can also be converted to digital quantities as required.
Transducers and transmitters together constitute a monitoring signal source for automatic control. Different physical quantities require different sensors and corresponding transmitters.

We have kinds of sensors for your selection, like UPC7 Strain Gauge Pressure Transducer, ULB16 submersible level transmitter, etc. 

Any interest, feel free to contact Stella Meng.