Joe wrote:
Just messing around, I measured a used 9 V battery. On the 100 uV scale and with some interprolating of the last dial, I read 9.189795 V at null (with a tiny bit of wobble on the needle).
Reading an 895A to 7 significant figures is a case of "false precision," which can lead to overconfidence in the accuracy of measurement results. Fluke specifies the accuracy of the 895A in differential mode as +/- (0.0025% of input + 0.0001% of range + 5 uV) at calibration temperature (around +/- 250 uV uncertainty for the measurement you describe), with calibration recommended every 30 days to maintain that accuracy.
Best regards, Charles _______________________________________________ volt-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there.
