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4 Wire Load Cell on NI9219

Evening All,

 

I’m looking for the best way to connect up a 4 wire load cell to our Compact Daq with a NI9219 universal module, using Flexlogger.

 

load cell info:

10v reference voltage

2mv/v sensitivity 

500kN nominal load


Any ideas?

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4-wire load cell is a full bridge config, and here is how you must connect it,

santo_13_0-1722293006910.png
Another variant of the connection diagram the DAQmx task,

santo_13_1-1722293108058.png

 

 

Santhosh
Soliton Technologies

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Thanks, that is how I had it connected up, but the card will not allow for more than 2.5v ext voltage, unless I'm missing something.

 

Do you know which settings to use on the module setting screen?

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@Dan_Buck wrote:

Thanks, that is how I had it connected up, but the card will not allow for more than 2.5v ext voltage, unless I'm missing something.

 

Do you know which settings to use on the module setting screen?


Yes, that is expected by the 9219 hardware design and described in the specifications,

 

santo_13_0-1722569874683.png

 

Santhosh
Soliton Technologies

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What would be the best module to use for this application? Based on the load cells parameters mentioned previous?

 

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@Dan_Buck wrote:

Evening All,

 

I’m looking for the best way to connect up a 4 wire load cell to our Compact Daq with a NI9219 universal module, using Flexlogger.

 

load cell info:

10v reference voltage

2mv/v sensitivity 

500kN nominal load


Any ideas?


Does the load cell need such high excitation voltage? I would also recommend checking other load cells with a lower excitation voltage if those are comparatively cheaper than a new c-series module.

Santhosh
Soliton Technologies

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9219 and 9237 are the only c-series modules that support full-bridge load cells.

 

9237 supports a variety of internal excitation voltages, including 10V.

santo_13_0-1722572278568.png

 

Santhosh
Soliton Technologies

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