Can I measure full bridge gage configurations with SCXI1121 and 1321 terminal

[Juan M]

Hello

I designed a load cell that uses a full bridge gage configuration. I have at my lab a SCXI 1121 module with a SCXI 1321 terminal block. I need to know if it is possible to use that hardware configuration in order to make de load cell and the data acquisition system fully functional.

Thank you.

Best regards from Bogotá, Colombia, South America

[Andy F.]

Juan,

The full brige configuration you are speaking of requires four wires, two for voltage and two for excitation, is this correct? If so here is a link that you might find helpful.

Full Bridge Configuration

This reference is for strain gauges, but the connection for a full bridge is going to be the same. The channel plus and minus and excitation plus and minus can be connected to the 1321 for the individual channel. To configure the proper gain, filtering, and excitation mode and level, please refer to the Getting Started with SCXI on pages 3-14 through 3-23 (pages 51-60 in the .pdf).

Regards,
Andy F.
Applications Engineer
National Instruments