Calibration
Procedure:
RAD
CO2
Safety
Alarms
This
is
a
more
detailed
explanation
of
the
calibration
procedure
found
in
the
manual.
Check
your
state
or
local
code
for
calibration
schedule
requirements.
At
a
minimum,
you
should
calibrate
at
least
once
a
year.
There
are
2
different
calibration
procedures
depending
on
the
altitude
at
which
the
device
is
to
be
used:
1.
0
‐
3,000
ft.
(900m):
Perform
Zero
Calibration
and
Span
Calibration.
2.
3,000+
ft.:
Perform
Zero
Calibration
only.
Before
You
Begin
1.
For
Zero
Calibration,
you
will
need
a
gas
cylinder
of
pure
nitrogen
(0
ppm
CO2).
For
Span
Calibration,
you
will
need
a
2
nd
cylinder
of
4%
CO2.
2.
Temporarily
cover
the
buzzer
hole
in
the
upper
right
‐
hand
corner
of
the
SEU
(sensor
unit)
and
RDU
(remote
display
unit)
with
a
small
piece
of
masking
tape
to
minimize
the
alarm
sound
during
calibration.
3.
If
calibration
is
to
be
performed
in
‐
situ,
first
inform
building
occupants
that
you
will
be
testing
the
CO2
alarm
for
several
minutes.
4.
Attach
included
tubing
between
the
gas
cylinders
and
the
SEU
calibration
port
as
follows:
a.
RAD
‐
0102SX2
–
Connect
the
tubing
to
the
supplied
plug
and
secure
it
over
the
air
entry
/
calibration
port
on
the
front
of
the
SEU.
b.
RAD
‐
0102/RAD
‐
0200
–
Connect
the
tubing
to
the
calibration
port
on
the
bottom
of
the
SEU.
A:
RAD
‐
0102SX2
B:
RAD
‐
0102/RAD
‐
0200
