Measurement 120Ω Strain Guage w/t 2 wire | LabJack
 

Measurement 120Ω Strain Guage w/t 2 wire

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Diego Luna
Daniel Park's picture
Measurement 120Ω Strain Guage w/t 2 wire

Hi,

I saw the topic that T7 can read the strain gauges directly.

In case Bridge Circuit, I can understand the measuring diagram as followings.

DAC0 : voltage supply, GND : ground, AIN0 : differential (+), AIN1: differential (-)

However, In case only 2 wire Strain Guage, I can not figure out the connection diagram.

Does can T7 read 2 wire Strain Guage directly without Bridge Circuit ? 

Is there Bridge Circuit w/t Known Resistor Value ?

 

LabJack Support
labjack support's picture
You would need to do bridge

You would need to do bridge completion to measure that strain. I would recommend using a different sensor that is already in a full bridge configuration if possible. Our bridge circuits application note has related information:

https://labjack.com/support/app-notes/bridge-circuits