Yokogawa SC72 Personal Handheld Conductivity Meter - Manual (Page 55)

IM 12D03D02-01E 6-4
6. Troubleshooting
6.3 Causes of Abnormal Measured Value
If error messages do not occur, but measured values seem incorrect, check the following:
* Are cell constants and temperature coefficients correctly set?
* Is the sensor properly connected to the meter?
* Are bubbles attached to the electrode portion?
* Is the sensor damaged or dirty?
6.4 Other conditions
• An alarm sounds
The alarm clock is set (see Sec. 4.3 (9) and change setting as required).
• To Enable / Disable Key-Press Audible Feedback (buzzer)
Refer to Sec. 4.3 (11) to change setting as required.