Ametek Land LANCOM 4 - Important Safety Information; Automatic Zero Calibration; Calibration Gas Requirements

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Lancom 4Portable Flue Gas Analyser
User Guide
10 Calibrating the Analyser
10.1 Important Safety Information
WARNING
Calibration gas is dangerous. You must comply with local health and
safetyandreregulations.
The Lancom 4 must be calibrated in a well ventilated environment. The
exhaust gases must be vented to a safe area.
10.2 Automatic Zero Calibration
When the analyser is switched on it automatically performs a zero
calibration.
Do not abort the zero calibration.
Ambient air is drawn through a vent in the analyser and is used for zero
calibration. This means it is possible to perform a zero calibration with the
probe connected.
If you are using the analyser in dierent locations where the temperature
dierenceissignicant,performazerocalibrationbeforemakingagasreading
in each location.
To perform a zero calibration
1) From the Main Menu, select Calibration.
The Calibration screen is displayed.
2) Select the Recalibrate option and press enter.
The Calibrating Probe countdown screen is displayed. The countdown
last 180 seconds. During this time, air is passed over the sensors in the
Lancom 4 and a ‘baseline’ calibration value established.
Do not ABORT the zero calibration.
For optimum performance an upscale calibration should be carried out
atleastonceevery6monthsusingcertiedcalibrationgases-contact
LAND or an approved distributor for more details.
10.3 Calibration Gas Requirements
Calibration gases must be obtained from a reliable supplier. Calibration gas
contains a small amount of the measured gas usually in a balance of nitrogen
(there are some exceptions).
Calibration gas is expensive and delivery time can be long. Check with
your local supplier before ordering gas.
Calibration gas is purchased with a nominal concentration accuracy of ±5%.
Itisthencertiedbythegasllertotheactualconcentrationaccuracy±2%.