Hach Ultra POLYMETRON 9182, Operator'S Manual

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Oxygen analyser (ppb) - 9182 -
7-12
MALFUNCTION POSSIBLE CAUSE REMEDIES
Measurement is not
correct Instrument was programmed
incorrectly Recheck programmed
parameters. Do they agree with
the probe's characteristics?
System, including probe, not
calibrated correctly Calibrate the whole system
(probe connected)
Probe connected wrong Recheck all probe connections
Probe malfunctioning,
possibly incompatible with the
application Visually check the condition of
the probe. Is the application
within the probe's
specifications (data sheet)?
CPU board is defective If error persists, call the
Service Technician
Measurement is not
stable Faulty probe Check the condition of the
probe. Is it contaminated?
Probe connected wrong Is the probe connected
correctly?
Interferences Are there any sources of
potential interference,
chemical, external,
temperature, pressure, ...?
Cable shield is not connected Check and connect
Defective CPU board If problem persists, call the
Service Technician
Probe connected wrong Is the probe properly
connected? Check Temperature
measurement is not
correct
Temperature was not
calibrated Calibrate for temperature. Also
check the Pt100 for correct
resistance (ohmmeter)
CPU board is defective If problem persists, call the
Service Technician