Basic Programming 5-5
September 2007
QUICK OFFSET Option The Quick Offset option uses an offset gas of known concentration to
recalibrate the XMO2 at a single point. The XMO2 compares the data
from this calibration to the original factory calibration data, and stores
the difference in an Offset Curve.
Note: This option appears only if DriftCal is ON and a one-gas
calibration has been selected.
To use the Quick Offset option, complete the following steps:
1. Using the sample system controls, stop the flow of sample gas to
the XMO2 inlet port and initiate a flow of the same offset gas
specified on the XMO2 Calibration Sheet. Establish the same flow
rate and pressure conditions used for the sample gas, and allow the
offset gas to flow through the XMO2 for at least three minutes.
2. Perform the offset gas calibration, press
[N] until the following
prompt appears. Then, proceed as follows:
You may now do one of the following:
• Press [N] as many times as necessary to select another Basic Menu
option. Then, press
[Y] and proceed to the appropriate section for
instructions.
• Press [N] repeatedly until the Resume? option appears. Then, press
[Y] to return to Operate Mode.
BASIC MENU
Press [Y] or [Enter] to initiate the
offset gas calibration.
Quick Offset?
BASIC MENU
This screen appears while the
calibration is taking place.
Measuring Drift...
BASIC MENU
The offset gas calibration has
been completed.
Quick Offset?
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