62
9900 Transmitter
Message
Cause
Solution
Out Of Range Use Manual
Calibration
(
Cond/Res
) Error > 10% in AutoCal
Use manual calibration method
(pH) Buffer not found;
Error > ±1.5 pH units
Use 4, 7, 10 pH buffers (with quinhydrone for
ORP calibration)
Clean sensor and retry EasyCal
Use manual calibration method
(ORP) No quinhydrone in buffer
Error greater than ±80 mV
Err Too Large To Calibrate
(
Cond/Res
) Manual cal when error >
100%
Inspect sensor and wiring for damage
Clean sensor
(pH) Offset > 1.3 pH units;
Slope error > 100%
Check reference
Clean sensor
Replace sensor
(Press) Slope must be < ±50% or offset
must be < 2.75 PSI or equivalent.
(Sal) Slope error > 1000%
Error Volume Too Low
User-entered volume too small to
calibrate
Correct volume entry
Use longer calibration period
Error New KF Out Of Range
The calculated K-Factor too low or high Verify volume or rate entered
Verify
fl
ow is present
Error Flow Rate Too Low
(Rate Cal) Flow too low to accurately
calibrate
Increase
fl
ow
Cal Error Out Of Range
(4 to 20 mA) Slope error > 1000%
Check input at 4 mA and 20 mA settings
(Temp) Offset must be < ±20 °C or
equivalent.
Check sensor range
Check reference
Replace sensor
Slope Too Close To Standard
(4 to 20 mA) Difference in calibration
values must be > 0.1 units
Check sensor
Use fresh buffer
Use two different buffer values
Clean sensor
(pH) Difference in calibration values
must be > 2 pH units
(ORP) Difference in calibration values
must be > 30 mV
Standard Too Close To Slope
(4 to 20 mA) Difference in calibration
values must be > 0.1 units
Clean sensor
Use fresh 4, 7, 10 pH buffers
Use two different buffer values
(pH) Difference in calibration values
must be > 2 pH units
(ORP) Difference in calibration values
must be > 30 mV
Level Offset Too Large
Offset must be < 1.0 meter
Decrease offset
Replace sensor
Pressure Too High
Pressure must be lower than 2.5 PSI
or equivalent to do zero cal.
Decrease pressure
Pressure Too Close To Zero
Pressure must be higher than 3 PSI or
equivalent to do slope calibration.
Increase pressure
Check reference
Check Cal
(2751 pH/ORP only)
Slope and/or Offset are out of range
(possibly due to memory failure in
sensor or preamp)
Perform pH EasyCal (pg. 34 & 56)
Perform ORP EasyCal (pg. 36 & 58)
Set pH Slope or Standard (pg. 34 & 57)
Set ORP Slope or Standard (pg. 36 & 59)
Reset pH CAL (pg. 34)
Reset ORP CAL (pg. 36)
Calibration Error Messages
