Single Bottle Calibration - LANDTEC GEM5000 Operating Manual

GEM5000 gas analyzer
It is important to note that a 0.0 is different than Nothing defined. In the above example for
Fresh Air, only CO is not defined or has "Nothing specified". What this means is that when
2
the mix named Fresh Air is applied to the instrument you will Zero the CH
H Channels. You will Span Oxygen to 20.9 percent. Carbon Dioxide CO
2
when Fresh Air is applied. This distinction is important because as gas mixes are defined you
may choose to omit defining a constituent as 0.0 if you want to span only and not Zero a
particular gas. The following example will describe this in a step-by-step single bottle gas
check/calibration sequence.

Single Bottle Calibration

The following will walk through a typical calibration using Air and a single bottle of 50%
Methane / 35% Carbon Dioxide / Balance Nitrogen.
The three simple steps to performing this calibration are:
 Apply Fresh air, Zero channels
 Apply Span to CH
 Apply Span for O
To begin, press the Menu Key
press 2 for Gas Check. From the Gas Check Screen, press 1 to perform the Gas Check. The
Select Gas Mix screen will appear.
LANDTEC
Gas Defined with "Nothing specified"
, CO , Zero O
4 2 2
2
on the instrument. From the Operations Settings Menu,
5K-MNL-GEM5000
Gases Defined with 0.0 will be spanned
to zero when the gas mix is used
will not be touched
2
These gases may
vary depending upon
your instrument's part
number.
This example uses a
GM5K0AC0-200-L
, O , CO, H S &
4 2 2
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