What is the difference between a pressure transmitter and a pressure transducer?

Question

I hear these two used a lot and don't know the difference between the two.

Answer 1

The transducer is the actual physical device that converts pressure to some electrical quantity (as a known function i.e linear function).

A transmitter uses a transducer, but provides a loop current proportional to the pressure. In otherwords it transmits the pressure over a wire, it doesn't just 'convert' it at the measuring point.

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Answer 2

Transducer Vs Transmitter

Answer 3

This is a very basic explantion.
In a pressure transmitter, the pressure changes act on a 'Bellows' type instrument that moves a solenoid iron core.
This changes the electrical output of the solenoid coil. This is transmitted to a control circuit or a pressure indicator in a control room where the signal is converted into a pressure indication and/or a control function.

In the same kind of way, a Transducer converts a mA electrical signal into an air pressure signal, generally between 1 to 15 psi, being fed to the diaphragm of a control valve.
(The transducer is called an 'I to P' (I/P) (Current to Pressure) transducer.

Answer 4

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RE:
What is the difference between a pressure transmitter and a pressure transducer?
I hear these two used a lot and don't know the difference between the two.

Answer 5

A transducer is any device that converts one form of energy to another; for e.g. from electrical to sound, from pressure to electrical etc.
So a pressure transducer is a device which has 'pressure' either as the output or input form.
On the other hand, a pressure transmitter is a device that transmits pressure or force in a give direction, e.g. bellows etc.

Answer 6

A transducer is a device that converts one form of energy into another form in accordance with their mathematical relationship or equation. While a pressure transmitter is composed of a pressure transducer and a signal conditioning circuit, which convert the raw signal into standard form such as 4~20 mA or 0.2 ~ 1 Bar.

Answer 7

A pressure transmitter takes the output of a pressure transducer and displays the result.

Answer 8

I searched the literature and find no basic difference between the two.

Each outputs a voltage as a function of the input pressure. Each may be used in control processes and instrumentation systems

I had prior knowledge via experience with pressure transducers in aerospace systems. These devices output volts per pound per square inch of pressure.

I researched the presssure transmitters, and the specs give the same transfer function, that is, an output of volts or millivolts per pound per square inch of pressure as the input.