Waltron 9065C Instruction Manual page 31

8. Retract the handle and connect a zero-point liquid/gas that
contains no O
slowly (max. 30 l/h) flow through the 9065C until the
current oxygen value no longer changes (Cur. O
sure that the 9065C is dry internally and the throttle valve
is open far enough to prevent extra pressure from building
up.
a. Press the "Enter" button to calibrate the zero point.
The values measured during several seconds will be
checked for stability of the oxygen signal.
b. When the signal value of the oxygen sensor is not
stable, the following message appears: "O
values unstable. Recal. meas. point" In this case, the
zero point must be recalibrated.
c. The parameter "O
9. Now connect a calibration gas with a known oxygen
content to the inlet of the 9065C. For the sensor this can
be CO /N with 4% O
2 2
the gas to continue flowing slowly through the 9065C (
max 30 l/h) until the current oxygen value no longer
changes (Cur. O
enough to prevent the build-up of extra pressure.
a. Use the arrow buttons to set the oxygen value of the
calibration gas; use the "Enter" button to move to the
next digit.
b. After the last digit, press the "Enter" button to
calibrate the high calibration point. The values
measured during several seconds will be checked for
stability of the oxygen signal. "Store Calibration" is
selected automatically.
c. If the signal from the oxygen sensor is not stable the
following error message will appear: "O
are unstable. Recal. meas. point." In this case, the zero
point must be recalibrated.
d. The menu point "O
selected.
10. Press the "Enter" button to set the O
Waltron User Manual
9065C Portable Luminescent Dissolved Oxygen Analyzer
to the inlet of the 9065C. Let the zero gas
2
high" is automatically selected.
2
and an accuracy of ± 1%. Allow
2
). Make sure the throttle valve is open far
2
sensor constants" is automatically
2
sensor constants
2
Calibration and Compensation
SENSOR TYPE: LHO
). Make
O
2
2
TEMP ACT. :21.3 °C
P-ATM.
ZERO POINT :0.000 %
O
²
sensor
2
SENSOR TYPE: LHO
O
2
TEMP ACT. :21.3 °C
P-ATM.
ZERO POINT :0.000 %
O
²
sensor values
2
P-ATM.
ZERO POINT :0.000 %
O
2
O
2
STORE CALIBRATION
MAIN MENU
CALIBRATION
ACT. :0.010 %
:1.013 BAR
HIGH :4.000 %
CALIBRATION
ACT. :3.993 %
:1.013 BAR
HIGH :4.010 %
CALIBRATION
:1.013 BAR
HIGH :4.010 %
SENSOR CONSTANTS
30