MSA SUPREMA - Page 84

REV 0, June 2005Page 84
Operation Manual SUPREMA
4. Operation of the System
Bar Display
Field type: Display (5-digit)
Indicator for a stable difference signal Ux. On manual calibration procedure all 5 digits must be
filled black, only then the measured values can be accepted.
Store
Field type: Button
This button is relevant only for the manual calibration process. If it is pressed during zero gas
measurement, the current measurement value is placed into the zero gas field. If it is pressed
during test gas measurement, the current measurement value is placed in the test gas field.
End
Field type: Button
Once readings for zero gas and test gas measurement are displayed in the corresponding
fields, they can be validated by pressing the “end” button. If there are already inputs to the
calibration history, the operator will then be asked whether this is a first calibration. If it is a first
calibration, the existing inputs in the history will be deleted.
Cancel
Field type: Button
Pressing this button will cancel a calibration process at any time. The results up to that time will
be voided.
Back
Field type: Button
Pressing this button will close the menu
without affecting the calibration process.
Diagnosis
Logbook
The logbook contains five histories:
• Calibration
• Events (System errors, signal problems, alarms)
• Configuration changes
• Supply Voltage
• Processor Temperature
All history entries are time-stamped. The size of the individual histories are variable. When a
history is full, the oldest entry is overwritten. One exception is the first calibration will not be
overwritten.
Calibration history
This history saves the calibration process data for each input. Up to four entries can be stored
for each input, and older entries are overwritten, except for the first calibration.