Michell Instruments XZR500ST, User Manual

Page: 39 / 78

XZR500 User’s Manual
Michell Instruments 31
OPERATION
Adjustment sequence
xx.xx
5. The calibration process takes about 10
minutes. During calibration the screen
alternates, displaying two messages
- ‘running’ and the current value of
calibration.
Adjustment sequence
running
Press the [*] key to fi nish the calibration
once this value is stabilized, otherwise the
calibration process will end automatically
after the 10 minutes time limit is reached.
The screen will then change to the
following:
Control gas?
Yes* No -
6. After the calibration process the quality of
the calibration can be veri fi ed by starting
the veri fi cation process with a control gas.
Assure that the control gas has a different
oxygen concentration from the gas used
for calibration (e.g. 2% if the calibration
gas was at 8%). The Calibration kit with
both gases is available - order code 2G.
[*] key – continues with the veri fi cation
process (go to step 7)
[–] key – skips the validation and
completes the calibration process (go to
step 8)
Control gas?
xx.xx
7. If the [*] key is pressed in step 6 this
screen is used to verify the calibration.
The page alternates between real-time
reading of the control gas and the option
to end the veri fi cation.
Stop control?
Yes* No -
Introduce the control gas to the inlet of
the analyzer. The calibration can then be
veri fi ed simply by comparing the reading
with the real oxygen content of the control
gas.
[*] key – Ends the veri fi cation process and
moves to the next page
[–] key – No effect