Calibration Errors; Process Calibration Tc2; Process Ph; Standard Ph - Swan Analytical Instruments AMI Codes-II TC Operator's Manual

AMI Codes-II TC
Troubleshooting
7.2.
7.2.1
Possible error
message
7.2.2
Possible error
message
7.2.3
Possible
error message
66

Calibration Errors

Process calibration tc2

Slope error:
Possible cause
Wrong manual measure-
ment.
 Wrong reagent mixture
 Reagents not complete-
ly solved in water.

Process pH

Offset error:
Possible cause
Manual measurement
wrong.
Slope of last calibration
wrong.
pH sensor dirty, old or
defect.
Cable connector corroded.

Standard pH

Offset error or Slope error:
Possible cause
Old, dirty or wrong buffer
solutions.
Verify programmed buffer
values with the values of
the buffer solution used.
pH sensor dirty, old or
defect.
Cable connector corroded.
Corrective Action
Repeat the manual measurement.
Use fresh reagents.
 Make a correct mixture.
 Mix long and intensively.
Corrective Action
Repeat the manual measurement.
Clean or replace pH sensor, see
Maintenance of pH sensor, p.
Replace cable and sensor.
Corrective Action
Check buffers expiration date if
necessary order new buffer.
Change programmed buffer val-
ues or use correct buffer solution.
Clean or replace pH sensor, see
Maintenance of pH sensor, p.
Replace cable and sensor.
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