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9 Apply calibration gas
for 1 minute.
Depending on your
calibration kit, you will need
to either:
a. Connect the gas bag
tubing to the
instrument’s inlet or
b. Connect the tubing
from the demand flow
regulator to the
instrument’s inlet.
10 Use the AIR and MODE
buttons to adjust the
gas reading to match
the value listed on the
calibration cylinder.
11 Press and release the
POWER button. The
instrument will perform
a gas adjustment and
will return to the
MANU_CAL menu item.
12 Disconnect the
calibration gas source
from the instrument’s
inlet fitting.
13 Depending on what
calibration kit you are
using, you need to
either:
a. Empty the gas bag
and refill it with H2 as
described in
“Preparing for a Span
Adjustment (Gas
Bag)” or
b. Unscrew the demand
flow regulator from
the CH4 cylinder and
screw it onto the H2
cylinder.
