Quality Assurance Of The Instrument - Swann AMU-II Oxytrace Operator's Manual

AMU-II Oxytrace
Maintenance
6.6.
Quality
assurance
level
38

Quality Assurance of the Instrument

Every Swan online instrument is equipped with integrated, autono-
mous quality assurance functions to survey the plausibility of each
measurement.
For the AMU-II Oxytrace these are:
 continuous monitoring of sample flow
 continuous monitoring of the temperature inside the transmitter
case
In addition, a manual, menu-driven inspection procedure can be
carried out using a certified reference instrument. After activating the
quality assurance procedure by selecting the quality assurance level,
the instrument regularly reminds the user to carry out the procedure.
The results are saved in a history.
Central feature of the quality assurance function is the assignment of
the monitored process to a quality assurance level.
There are three predefined levels plus a user level. Hereby the in-
spection interval, the deviation limits of temperature and measuring
result between the inspection equipment and the monitoring instru-
ment are defined.
 Level 1: Trend; Measurement used as an additional informa-
tion to follow the process indicating trends.
 Level 2: Standard; Monitoring of several parameters of a pro-
cess (e.g. oxygen, saturation). In case of instrument failure,
other parameters can be used for process monitoring.
 Level 3: Crucial; Monitoring of critical processes, value is used
for control of another part or subsystem (valve, dosing unit,
etc.).
Additional level:
 Quality level 4: User; User defined inspection interval, maximal
deviation of temperature and measuring result.
A-96.150.541 / 111223