TR250Z Oxygen Transmitter – Manual
CO2Meter.com
Rev. 27 April, 2015
Pg. 11 of 13
Calibration
can
be
performed
using
either
0%
CO2
calibration
gas
(typically
nitrogen,
Argon,
etc.),
or
using
a
fresh
source
of
air,
assumed
to
be
approximately
20.9%
O2.
Attach
calibration
gas
to
the
unit
and
connect
the
unit
to
a
personal
computer.
Open
the
calibration
screen
in
the
DAS
software.
Click
the
“Calibrate”
button
in
the
calibration
tab
for
the
desired
gas,
located
in
the
“Configure
Sensor”
screen.
As
long
as
the
gas
concentration
is
stable,
the
unit
should
instantly
reflect
the
calibrated
value.
This
can
be
confirmed
by
watching
the
display.
To
see
the
calibration
value
in
real
time,
click
in
the
“Collect
Real
time”
button
to
capture
these
values
before
opening
the
configuration
screen.
Real
‐
time
capture
Zero or Fresh Air Calibration
Apply
gas
and
select
the
appropriate
concentration
and
Click
the
“Calibrate”
button.
The
sensor
reading
should
instantly
reflect
the
calibration.
NOTE:
DO
NOT
ADJUST
THE
SPAN
VALUE.
