5 – Installation and set-up MultiExact Gas Analyser
5.9.2 Entering a cross-interference (X-Interference) compensation
You can only apply cross-interference compensation to O
2
purity or control
measurements.
X-I
nterference compensation is disabled during calibration, and is not applied
to the values shown in Figure 74
. All other outputs (that is, serial or mA
outputs) remain compensated.
Use the following procedure to enter a compensation to correct for an O
2
(oxygen)
measurement error:
1. Select
Set up
X-Interference.
If your analyser is configured for a si
ngle sample measurement, the
X-Interference offset screen is then displayed. Continue at step 3.
2. With the X-Interference select screen
displayed select the required
measurement, then press the
soft key.
3.
The offset value shown on the
X-Interference
correction which will be applied to O
2
(oxygen) sample measurements
before they are displayed (or output).
4. Edit the displayed offset as described
in Section 4.10.
Figure 59 – The X-Interference
offset screen
5.10 Selecting display units
You can change the measurement units shown on the display (and output). The
following display units are supported:
mg m
-3
(milligrams per normal cubic metre)
mols per mol (or moles per mole)
volume % of the Lower Explosive Limit
58 05410001A / Revision 6
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