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

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4-34 | Model 920 Multi-Gas Analyzer
CAL Mode – F2 Commands
Keystroke Term Definition
F2 • — —
F2 – — —
F2 0 Man/Zero? Allows you to manually Zero the analyzer. The analyzer Zero is automatically adjusted
based on the average reading during the IntTime duration after a Yes response only
if AdjDisable is set to ‘ 0 ’. The Zero gas must be introduced manually into the analyzer
sample system. Refer to “Manually Zeroing the Analyzer” in Chapter 3.
F2 y Man/Spany? Allows you to manually Span the analyzer for each component, where ‘y’ = Manual Span
F2 1..F2 6 . The analyzer calibration is automatically adjusted based on the average read-
ings during the IntTime duration after a Yes response only if AdjDisable is set to ‘ 0 ’. The
Calibration (Span) gas must be introduced manually into the analyzer sample system.
Refer to “Manual Span” in this chapter for details about how to manually Span the analyzer.
F2 1 = Man/Span1? F2 4 = Man/Span4?
F2 2 = Man/Span2? F2 5 = Man/Span5?
F2 3 = Man/Span3? F2 6 = Man/Span6?
F2 7 — —
F2 8 Man/SpanO2? Allows you to manually Span the O
2
Sensor (if used – General Purpose applications/
analyzers only ) at the analyzer. The sensor Calibration is automatically adjusted based on
the average reading during the IntTime duration after a Yes response only if AdjDisable is
set to ‘ 0 ’. Man/Span must be used to calibrate the sensor if Nitrogen is used for the Span
gas. The Calibration (Span) gas must be introduced manually into the analyzer sample sys-
tem. For systems with the O
2
Sensor, refer to the
O
2
Concentration Measurement Manual
Supplement
for details about how to manually Span the O
2
Sensor.
F2 9 Man/ZeroO2? Allows you to manually Zero (air point calibration) the O
2
Sensor (if used – General
Purpose applications/analyzers only ) at the analyzer. The sensor Zero is automatically
adjusted based on the average reading during the IntTime duration after a Yes response
only if AdjDisable is set to ‘ 0 ’. Man/Zero must be used to calibrate the sensor if Nitrogen is
used for the Zero gas. The Zero gas must be introduced manually into the analyzer sample
system. For systems with the O
2
Sensor, refer to the
O
2
Concentration Measurement
Manual Supplement
for details about how to manually Zero the O
2
Sensor.