In-Situ Aqua TROLL 100 and 200 Operators Manual - Manual (Page 86)

Page 86 Aqua TROLL Operator’s Manual
Section 10: Troubleshooting
• For a log with a scheduled start, select None as the stop
condition, or select a stop time that is closer to the start
time.
TROUBLESHOOTING PARAMETER CONFIGURATION
Problem: Cannot configure level or other parameters using
the Configure button on the Sensors tab. The Sensor setup
screen is shown, but the Configure... button is dim.
Probable Cause 1: The Aqua TROLL is actively polling
(continually updating real-time readings) in the Home tab.
Suggested Remedy: Return to the Home tab and stop real-time
readings by clicking .
Probable Cause 2: The Aqua TROLL has an active log—a log that
is Ready, Pending, Running, or Suspended as shown in the
Status column of the Logging Tab. Only one active log can
reside in the device at a time.
Suggested Remedy: Stop or delete the log if possible.
Alternatively, configure parameters after the log is
completed.
TROUBLESHOOTING CONDUCTIVITY CALIBRATION
Problem: The calculated cell constant (Kcell) is lower than the
recommended range of 0.98 – 1.02.
Probable Cause: The electrical resistance of the calibration
solution was lower than expected for the nominal value.
Suggested Remedy: Check the following and then repeat the
calibration:
• Visually inspect the sensor for the presence of fouling
(most likely conductive material, possibly a bio-film);
clean as described in Section 9 of this manual.
• Ensure the calibration solution is not contaminated,
mislabeled, or partially evaporated.