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Pressure Xducers - I or V ?

R

Roger Bourne

Jan 1, 1970
0
Good day all,

Topic: Pressure transducers
Which is better: Constant current excitation or constant voltage
excitation ?

If I am to base myself on google, I would say most people employ the
constant current excitation technique.

Regards,
-Roger
 
Roger said:
Good day all,

Topic: Pressure transducers
Which is better: Constant current excitation or constant voltage
excitation ?

If I am to base myself on google, I would say most people employ the
constant current excitation technique.

This rather depends on the sort of prssure transducer you are talking
about, what you want to do with it, what sort of bandwidth you need
from the sensor, and what sort of long term accuracy and stability you
need from the sensor.

A microphone is a prssure transducer, and so is a Bayard-Alpert ion
gauge. Which sort of transducer did you have in mind?
 
R

Roger Bourne

Jan 1, 1970
0
By pressure transducer I meant pressure sensor.
Essentially, a pressure-sensitive-resistor wheatstone bridge.

-Roger
 
Roger said:
By pressure transducer I meant pressure sensor.
Essentially, a pressure-sensitive-resistor wheatstone bridge.

A Wheatstone bridge is a device for comparing resistances.

I'd imagine that your pressure sensor is a silicon diaphragm into which
the manufacturer has diffused a number of strain-sensitive resistive
elements.

Give us a part numbr and we might be able to give ypu some useful
advice.
 
F

Frank Bemelman

Jan 1, 1970
0
A Wheatstone bridge is a device for comparing resistances.

I'd imagine that your pressure sensor is a silicon diaphragm into which
the manufacturer has diffused a number of strain-sensitive resistive
elements.

Give us a part numbr and we might be able to give ypu some useful
advice.

Also known as load cell.
 
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