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Instruction
Figure 7.2.A through 7.2.C provide maintenance instruction in this order: zeroing, calibration, and bump
testing. The standard process is shown for calibration and the quick process is shown for bump testing.
When a process varies from those shown below, the instrument will supply instruction on its display screen.
Zeroing
Zero utility
Zero Progress
Zero Results
When the zero is completed,
the instrument will emit an
audible indicator and display
results as follows:
—
—
Passed
Failed
Cancel
Start zero
process
If any sensor failed, press
to access the zero utility and
repeat the zero process.
Figure 7.2.A Zeroing instruction
Calibration (standard process shown)
Place the prepared
calibration cup over the
instrument case top.
Press down to secure
the cup in place; a click
will sound.
Visually inspect the
calibration cup to ensure its
edges along the top and
sides align with the
instrument case top edges.
Calibration utility
Calibration apply gas
Apply calibration gas of the
type and concentration stated
on the instrument's display
screen. To start the flow of gas,
turn the regulator's knob in a
counterclockwise direction.
—
Cancel
calibration
Start
calibration
If desired, skip
calibration for
the displayed
gas