O
1/27/2021
Kele, Inc. • 3300 Brother Blvd. • Memphis, TN 38133
4.4 C
ONCENTRATION
R
EPORTING
In normal mode, oxygen concentration r
20mA current loop output. The output connector location is shown in
Table 3.
5
S
ENSOR
C
ALIBRATION
The sensor requires calibration at the specified calibration interval listed in
Table 3
to ensure its accuracy is maintained over
two-step process that provides the sensor module with
zero) gas, and then a specific concentration (or spa
buttons (
ZERO
and
SPAN
) are provided on the main
Figure 9.
Blinking Yellow
During gas sampling period that starts immediately
when calibration is initiated.
Blinking Green
Temporary calibration applied.
confirm or reject
Blinking Red
Failed calibration attempt.
acknowledge with either a re
Green/Yellow
During ambient equilibration
calibration.
New calibration is applied.
Red/Yellow
During ambient equilibration period after failed
calibration.
Old calibration is unchanged
TABLE 8:
Meaning of status LED blink patterns
5.1 C
ALIBRATION
G
ASES
Pure nitrogen zero gas and a precise mixture of oxygen and
oxygen sensor.
An orificed calibration adapter is recommended to ensure tha
calibration gas without applying higher than ambient pressure to it
A complete calibration kit that includes all the
your distributor.
Type
Mixture (by volume)
Zero gas
Pure nitrogen
Span gas
20.9%
oxygen
balance nitrogen
TABLE 9:
Required Calibration Gases
OS-2 Oxygen Sensor
Kele, Inc. • 3300 Brother Blvd. • Memphis, TN 38133
FIGURE 9
: Location of SPAN & ZERO Controls
EPORTING
xygen concentration readings from the sensor are reported by the controller
The output connector location is shown in Figure 3. Output scaling is as shown in
ALIBRATION
calibration at the specified calibration interval listed in
is maintained over its life. Calibration is a
the sensor module with oxygen-free (or
, and then a specific concentration (or span) gas. Two calibration
) are provided on the main board as shown in
During gas sampling period that starts immediately
when calibration is initiated.
Temporary calibration applied. Waiting for user to
the temporary calibration.
Failed calibration attempt. Waiting for user to
acknowledge with either a re-try or and exit.
ambient equilibration period after successful
New calibration is applied.
During ambient equilibration period after failed
Old calibration is unchanged.
Meaning of status LED blink patterns
during calibration.
mixture of oxygen and nitrogen (see Table 9) are required to calibrate the
recommended to ensure that the sensor is completely immersed in the
without applying higher than ambient pressure to it.
A complete calibration kit that includes all the required accessories in a convenient carrying case is available from
Mixture (by volume)
Recommended Accuracy
Comments
if supplied from l
beware of cooling the
20.9%
oxygen
± 0.1 % oxygen
Calibration gas inaccuracy adds
directly to sensor’s
specified
accuracy error.
Page 7 of 14
: Location of SPAN & ZERO Controls
the controller’s powered 4 –
Output scaling is as shown in
) are required to calibrate the
sensor is completely immersed in the
required accessories in a convenient carrying case is available from
Comments
if supplied from liquid source
beware of cooling the sensor.
Calibration gas inaccuracy adds
directly to sensor’s
specified
