Gas Check (Field Calibration) - LANDTEC GEM5000 Operating Manual

 Certified calibration gas cylinders are supplied with the LANDTEC calibration kit. The
volume of gas is typically 34 liters. Certain gas mixtures may have different
volumes. Please refer to the LANDTEC website
information.
 The regulator supplied with the calibration kit is pre-set for flow and pressure rates
that are factory set. If using other gas sources and regulators please match the flow
and pressure of the LANDTEC regulators. An optional pressure relief valve is
suggested if using a NON-LANDTEC regulator just as a safety precaution. Over
pressurization of the analyzer can cause damage to the analyzer and cause it to
malfunction.

9.6 Gas Check (Field Calibration)

The GEM5000 instrument series has a "Gas Check" to both perform a test or check the gases and
then allow calibration to a known standard or "gas mix". The calibration will calibrate to a zero target
or other target value if defined. If a gas is missing or not defined in the mix, then the Gas Check
Fresh Air
Pure N
2
CH :High
4
CH Low
4
Oxygen Low
Oxygen High
On the instrument, this would be displayed as follows:
Page 96
—
Figure 34
Calibration will not calibrate to it.
A default set of "gas mixes" covering the majority of scenarios for basic
calibration of CH4, CO2, & O2 have been preloaded into the instrument for
your convenience. To meet your particular needs, you are able to adjust
the existing mixes to or add additional gas mixes. The following table
shows the mixes that are pre-loaded into your instrument.
CH CO
4
0.0
0.0
50.0 35.0
15.0 15.0
Copyright LANDTEC North America, Inc.
LANDTEC Calibration Gas Kit
www.landtena.com
O CO
2 2
20.9* 0.0
0.0 0.0
0.0
0.0
4.0
20.9
for further
H S Pump
2
On
0.0 Yes
0.0 No
No
No
No
Yes
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