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66
GF 9950-10 Six Channel Transmitter
Condition
Possible Causes
Suggested Solution
Broken Glass
pH sensor glass has been damaged
and caused very low impedance
Visually inspect pH/ORP sensor for
cracked and/or chipped glass
Hi Impedance
The measured pH sensor impedance
is above the high impedance level.
Visually inspect the pH electrode and
clean if necessary
Electrode could be in air
Ensure electrode is submersed at all times
Check Cal
(pH/ORP only)
Slope and/or Offset are out of range
Perform pH EasyCal (page 71)
Perform ORP EasyCal (page 73)
Set pH Slope or Standard (page 71)
Set ORP Slope or Standard (page 73)
Reset pH CAL (page 71)
Reset ORP CAL page 73)
Hi Salinity Warning
Calibration Value entered is out of the
range allowed
Clean electrode and recalibrate
Enter a lower offset value
Replace sensor
Temperature Warning
Temperature Value entered is out of
the range allowed
Enter a lower offset value
Replace sensor
Troubleshooting