Aquametrix 2200C Conductivity Controller User Manual User Manual
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8.2 Invalid Calibration
8.2.1
Invalid calibration will be indicated when the input is out of range. This could occur
if you had attempted to calibrate with a solution which was outside the range of the
instrument.
8.3 Invalid Output
8.3.1
Invalid output will be indicated if the expanded range is less than 10% of full scale.
To correct, refer to Section 5.3.
8.4 Invalid Alarm Points
8.4.1
Invalid Alarm will be indicated if the Low Alarm is set higher than the High Alarm.
To correct, refer to Section 5.6 and 5.7.
8.5 Invalid Setpoint
8.5.1
The deadband setting must be lower than the Setpoint if you are controlling rising
conductivity, and higher than the Setpoint if you are controlling falling conductivity.
If you have not made these settings correctly, invalid entry will be indicated by a
flashing LED. To correct, refer to Section 5.4 and 5.5.
9.0
TROUBLESHOOTING AND SERVICE
9.1 Isolate the cause
9.1.1
When a measurement problem occurs, the first step is to try to isolate the cause. If
the 2200C is powered, go through the menu and check your settings. A convenient
way to do this is to call TEST. See Section 5.7