Warning Messages - Hach ORBISPHERE 6110 Package Analyzer V3 Manuel D'utilisation Simplifié

9.2 Warning messages

Message
W1: Unstable reference
pressure.
W2: Unmatched package
size.
W4: Measurement timeout.
Accuracy of dissolved
O2 not guaranteed.
W10: No message
displayed.
W20: Measurement process
incomplete. Insufficient initial
package pressure.
W40: No message
displayed.
W80: Measurement process
incomplete. Insufficient
package pressure during
ultrasound stage.
W100: No message
displayed.
W200: No message
displayed.
W400: No message
displayed.
W1000: No message
displayed.
9.3 Measurement problems
Observation
Negative TPO results.
The instrument never reaches
the threshold value.
Probable cause
The variation of reference pressure is
too high.
The measured package height is
different from the value defined in the
package definition.
The measurement pressure is lower
than 3.5 bar.
Gas path not airtight.
A spontaneous and/or too fast
degassing has occurred.
The package (especially in the case of
cans) is losing pressure due to a leak.
The sensor has become unstable.
The pressure in the package is too low
to continue with a measurement.
A spontaneous degassing is detected
at the end of the first expansion.
The measured pressure is too low to
compute the second phase of the
measurement.
Possible problem with instrument
configuration.
Possible problem with instrument
configuration.
True CO2 may not be reliable due to
CO2 purge gas purity out of
specification.
Possible problem with instrument
configuration.
Explanation
CO purge gas is not of the required purity of > 99.9%.
2
Bad headspace volume computed.
CO purge gas is not of the required purity of > 99.9%.
2
There is a leak with the CO
Solution
Check the pressure stability of the input
reference gas.
Check the package size definition.
Check the black seal on the piercing
unit.
Check the purge gas pressure.
Check the forcing gas pressure.
Check the Goretex filter.
Check the airtightness of the gas path
between the piercing unit and the
measurement chamber.
Restart the measurement with another
package.
Verify the package is leak free i.e.
watertight and airtight.
Perform an oxygen sensor maintenance
procedure.
Restart the measurement with another
package.
Restart the measurement with another
package.
Check foam intrusion in the gas path.
Check Goretex filter.
Contact your Hach Lange
representative to analyze the problem.
Contact your Hach Lange
representative to analyze the problem.
Check gas cylinder purity, tubing and
connections to 6110 and recalibrate
CO2 sensor.
Contact your Hach Lange
representative to analyze the problem.
gas supply.
2
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