ATI
Q45P pH System
Part 6
–System Maintenance
38
O&M Manual
Rev-B (7/15)
6.3
Display Messages
The Q45 Series instruments provide a number of diagnostic messages that
indicate problems during normal operation and calibration. These messages
appear as prompts on the secondary line of the display or as items on the Fault
List (see Section 4.11).
The following messages will appear as prompts:
MESSAGE
DESCRIPTION
POSSIBLE CORRECTION
Max is 200
Entry failed, maximum value
allowed is 200.
Reduce value to
≤
200
Min is 200
Entry failed, minimum value allowed
is 200.
Increase value to
≥
200
Cal Unstable
Calibration problem, data too
unstable to calibrate.
Clean sensor, get fresh cal solutions, allow
temperature and pH readings to fully stabilize, do
not handle sensor or cable during calibration.
Slope HIGH
Sensor slope from calibration is
greater than 110%.
Get fresh cal solutions, allow temperature and pH
readings to fully stabilize, check for correct buffer
values
Slope LOW
Sensor slope from calibration is
less than 80%.
Clean sensor, get fresh cal solutions, allow
temperature and pH readings to fully stabilize,
check for correct buffer values.
Out of Range
Input value is outside selected
range of the specific list item being
configured.
Check manual for limits of the function to be
configured.
Locked!
Transmitter security setting is
locked.
Enter security code to allow modifications to
settings.
Unlocked!
Transmitter security has just been
unlocked.
Displayed just after security code has been entered.
TC-F25 lock!
The TC selection is in F25 mode,
locked at 25 ºC
Calibration and TC adjustment cannot be performed
while the TC is in F25 mode. To allow access to
TC calibrations, change TC mode from F25 (fixed
25) to SENS (sensor).
The following messages will appear as items on the Fault List:
