wtw pH 7110 - Error message OFL, UFL; [LoBat] display

What to do if... pH 7110
40 ba75925e01 07/2011
10.2.2 Error message OFL, UFL
The measured value is outside the measuring range of the meter.
The measured value is obviously incorrect.
10.3 General information
10.3.1 Symbol for calibration evaluation flashes
10.3.2 [LoBat] display
Cause Remedy
• ORP value not stable • Measure with air excluded if
necessary
• Temperature not stable • Adjust temperature if necessary
Cause Remedy
• Cable broken • Replace the electrode
• Gel electrolyte dried out • Replace the electrode
• Air bubble in front of the junction • Remove the air bubble
• Air in the junction • Extract air or moisten the junction
Cause Remedy
Calibration interval expired Recalibrate the measuring system
Cause Remedy
Batteries almost empty Replace the batteries (see section
3.3.1 I
NSERTING THE BATTERIES,
page 10)