Xylem SI Analytics Lab 855 - Error Message OFL, UFL; General Information; Symbol for Calibration Evaluation Flashes; Lobat] Display

What to do if... Lab 855
38 ba77143e02 12/2017
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
10.3.3 Instrument does not react to keystroke
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)
Cause Remedy
Operating condition undefined or
EMC load unallowed
• Processor reset:
Press the <ENTER> and
<On/Off> key simultaneously