Cambridge Sensotec Rapidox 1100L Oxygen Analyser Instruction Manual
Figure 12: Calibration Gas Update Screen.
Enter your new value in the units as instructed and click “OK” to proceed. This
value will then be stored until you want to change it again. You will now see the
following screen:
Figure 13: Calibration Confirmation Screen.
This is your final chance to change your mind before committing to a calibration.
Check carefully that the gas value on the screen actually matches the value of your
calibration gas before clicking on “Yes” to complete the calibration. At this point
you should observe that the LCD display will reset itself to the correct calibration.
You can now proceed with the rest of the calibration process by selecting the
Middle and Low gases in the same manner.
8.8
Calibration Error Messages
During the calibration process described in 8.7 above it is possible to receive
screen error messages as described here.
1)
Bad Sensor Reading:
The Rapidox software makes a prediction of the
expected sensor mV for each calibration gas value entered. If the mV signal
coming from the sensor is out of the expected range the following message
is displayed:
This normally indicates one of two things: that you are using the wrong cal
gas value compared with the actual gas flowing over the sensor OR the
sensor is getting old and can no longer output the expected signal required
for a healthy calibration.
Version 1.6
26
Last printed 16/11/2011 16:59:00