Appendix - Amprobe WT-50 User Manual

Probe is not reading correctly
• Check the membrane and replace with new membrane if it is clogged by
something.
• Clean the cathode and anode if they are tarnished.
• Check for significant concentration of H2S , SO2 , H2 , Neon and NO..because
some gases can interfere with DO readings.
Display disappears
Check whether the low battery indicator is displayed on before the display is
disappeared, if yes, replace with new batteries.
Error code
E 1: The probe is disconnected or damaged.
E 2: The value is underflow.
E 3: The value is overflow.
E 4: The original data that is related to this value error.
E17: 100% saturation Calibration error.
E21: The current temperature is out of +/- 10 C of the temperature when doing
100% saturation calibration. Perform 100% calibration again.
E31: A/D error.
E32: IIC memory error.

APPENDIX

Altitude (Meter/Ft.)
0 (Sea level )
152 / 500
305 / 1000
457 / 1500
610 / 2000
762 / 2500
914 / 3000
1067 / 3500
1219 / 4000
1372 / 4500
1524 / 5000
1676 / 5500
1829 / 6000
Altitude/Pressure chart
Pressure (mmHg)
760
746
732
720
707
694
681
668
656
644
632
621
609
11