Error 200077 during Strain Gauge Calibration in Measurement and Automation Explorer V5.3.1f0

[Gagz]

Hey Guyz!

I am experiencing a problem perfomring my shunt calibration using a 350ohm(GF 2) strain gauge connected with NI9949 and NI9237 in a NI cDAQ-9178 Hardware.

When i click on strain callibration under configuration-Device: R3 being my shunt of 100k ohm, i can measure the errors and calibration but when i hit the calibration tab, it gives me an error 200077 occured at Strain Gauge Calibration (see aatached jpeg file for the error type).

I don't know what is wrong, i have doublt-tripple checked my circuit, and have read the forums regarding the same error and have come across the "signal input range", in my case it is default kept at 1m max and -1m min. I am not sure how these values work.

Any guidance would be appreciated.

Thanks in advance.

[AndyNash]

Hi

This error code may be occurring due to the specified signal input range in max (-1m to 1m), being set to a value outside of the expected readings from your strain gauge.

Also the Gage Factor, Gage Resistance, Initial Voltage, Vex Source, Vex Value (V), Lead Resistance and Strain Configuration need to be configured based on your sensor specification.

This link gives more details on connecting strain gages to a DAQ device:

http://www.ni.com/gettingstarted/setuphardware/dataacquisition/straingages.htm#StrainGageCalibration

Hope this helps.

[AndyNash]

Hi

Have you managed to find a solution to this issue? If so then I would be interested to know what you found as the source of the problem.

Kind Regards

[Gagz]

Yes, I did find the reason behind the error, it was due to the fact that the dummy resistance used in the circuit was damaged and was not giving normal reading, thus, calibration was not possible.

But another day I was again try to calibrate it after a few days, then had same issue. I think the circuitry might be very delicate and as it was lying down in the hangar attached to the aircraft, which has made it an issue of some sort, I don't know.

Regards,

Gagz

[TonyRef]

I have the same problem while simulating 1/4 bridge 3-wire and tried to change settings and cannot fix it. I can remove zero offset and adjust gain by adding steps but why while Strain Calibration tool is provided. I have .doc with screen shot and .seproj attached for Application Engineer perusal. Cheers Tony