Span; Figure 24: Setting Calibration Gas; Figure 25: Accessing Span Calibration - Thermo Scientific Odalog L2 Series User Manual

OdaLog® L2 – Gas Logger User Manual

9.6. SPAN

 Set the calibration level via the OdaStat-G™ software package "Instrument Parameters" section to
match the level stated on the calibration mixture cylinder that is being used.
 Insert the calibration fitting [Part No 11-0001] over the sensor at the bottom of the OdaLog®, as
shown in Figure 26.
 Attach the regulator to the gas cylinder and fit plastic tubing over an inlet on the calibration
adaptor (Figure 26).
 Open the regulator and allow gas to pass over the sensor at the flow rate and for the flow time,
as detailed in Table VII.
 After waiting for the time shown in Table VII, the gas reading on the screen should have stabilised,
and calibration can be performed as follows:
1. Press and hold down the button until the screen progresses past the menus until "SPAN"
appears, then release the button. The right LED will flash to indicate the instrument is in Span
mode.
2. Place the magnetic base of Allen Tool provided on the right-hand side of the LCD display above
the wording "SPAN".
o "DONE" will appear briefly, and the LCD will return to the "INST" screen, indicating a
successful calibration.
o "bAd1" or "bAd2" will appear, indicating the span value saved will be inaccurate due to a
damaged or faulty sensor (see Section 9.7).
o "FAILED" calibration (sensor will not save Span value). LCD will return to the "INST" screen
(see Section 9.7).
P/N: 10-1000
Figure 21: Setting Calibration Gas
Figure 22: Accessing SPAN calibration.
Revision G, January 2024 Page | 25