To CALb if calibration is required
CALb Background
Re-start Instrument
OFF
Switch OFF
Fit for use
7
6
Press the button until the
last LED is turned OFF
8
8
A
B
Fresh air 400ppm
C
Gas Measurement Instruments Ltd
www.gmiuk.com
GMI Document Part Number: 63331 Issue 1
When the instrument is in CALb
mode, the first Background
Calibration is done after five (5)
hours. If the instrument is left in
CALb mode, it continues to do a
Background Calibration every four
(4) hours until the instrument is
restarted or switched OFF.
NOTE
If the status indicator is shown, the readings are not reliable!
The actions to take are as follows:
1) Charge the battery
2) Re-calibrate the carbon dioxide sensor zero point
(put the unit in CALb mode)
3) If the status indicator is still shown – contact your distributor
For logging of data and more detailed information, refer to the User
Manual (GMI Part No. 63330).
NOTE
(or enter CALb mode)
ProDetec Pty Ltd - Ph: +61 2 9620 8700; [email protected]