Metek 920, Operator'S Manual With Essential Health And Safety Requirements

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4-36 | Model 920 Multi-Gas Analyzer
CAL Mode – F4 Commands
Keystroke Term Definition
F4 • — —
F4 – — —
F4 0 ConcX The concentration of NO
x
(% or PPM) in the Calibration gas mixture. The concentration is
entered in decimal form. The maximum concentration which can be entered is 999 999. If a
calibration gas is not used, the concentration must be set to ‘ 0 ’. If separate calibration gas
mixtures are used for NO and NO
2
, ConcX must be set to ‘ 0 ’.
F4 z Conc z The concentration of the component z (% or PPM) in the Calibration gas mixture,
where ‘z’ = Manual Span F4 1..F4 6 . The concentration is entered in decimal form. The
maximum concentration which can be entered is 999 999. If a Calibration gas is not used,
the concentration must be set to ‘ 0 ’.
F4 1 = Conc1 F4 4 = Conc4
F4 2 = Conc2 F4 5 = Conc5
F4 3 = Conc3 F4 6 = Conc6
F4 7 — —
F4 8 O2Conc
z
The concentration of O
2
(% or PPM) in the Calibration gas mixture, where ‘
z
’ = 1..2. The
concentration is entered in decimal notation. The maximum concentration which can be
entered is 999 999.
1 = O
2
concentration for span point Calibration gas (typically 5.00 %).
2 = O
2
concentration for air point Calibration gas (typically 20.95 %).
F4 9 Bw Used in applications where the emission rate is calculated using a fuel factor. Bw is the
water content (%) in the air used in the combustion process.