5 quarter bridge on a channel pair

posted Apr 8 '19 at 8:12 am

Hi all
I have wired the DT800 for 1/4 bridges on a channel pair (manual page 176).
I have attached a 120 gauge on channel 1+

Reading ppm with 1+BGI...... result: 55 ppm (+- 5ppm)
Reading ppm with 1+BGV......result: 160 ppm (+-15 ppm)

Any takes which result might be right an why?
Thanks, Claudio

Hi all I have wired the DT800 for 1/4 bridges on a channel pair (manual page 176). I have attached a 120 gauge on channel 1+ Reading ppm with 1+BGI...... result: 55 ppm (+- 5ppm) Reading ppm with 1+BGV......result: 160 ppm (+-15 ppm) Any takes which result might be right an why? Thanks, Claudio

Roger

posted Apr 8 '19 at 8:17 am

Both are correct.
With strain gauges you must take a zero reading to establish the zero load zero strain point which is then subtracted from the readings yo calculate the actual strain

Cheers

Roger

Both are correct. With strain gauges you must take a zero reading to establish the zero load zero strain point which is then subtracted from the readings yo calculate the actual strain Cheers Roger

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