Thermo Fisher Scientific CyberScan DO 110 - Manual (Page 15)

Instruction Manual CyberScan DO 110
10
4.3 DO Calibration (with ATC) –% Saturation Mode
Dissolved Oxygen exact calibration value depends on barometric pressure. The
meter is set to a factory default of 760 mm Hg, which results in a
calibration value of 100% saturation in air.
NOTE: If the barometric pressure setting has been changed
from 760 mm Hg, the calibration value in air will automatically
adjust to a value other than 100%. The adjusted value will be
correct for the new barometric pressure setting. See Section
8.8.1 for barometric pressure setting.
4.3.1 To calibrate 100% Saturation:
1. Press MODE key to select % Saturation mode.
2. Rinse the probe well with deionised rinse water. For
best accuracy, blot the end of the probe dry. Do not
touch the membrane.
3. Hold the probe in the air gently with the sensor facing
down and press CAL key to calibrate the meter. The
primary display will show the current value of
measurement and the secondary display will show
“100.0” (or the value corrected to its barometric
pressure setting) to which the meter is going to be
calibrated. Wait for the reading to stabilize.
4. Press ENTER key to confirm the calibration. The meter automatically
calibrates to 100% air saturation and returns to the measurement mode.
4.3.2 To calibrate 0% Saturation:
1. Press MODE key to select % Saturation mode
2. Rinse the probe well with deionised rinse water.
3. Immerse the DO probe in 0% solution. Stir gently to
create a homogenous solution. Wait for the reading to
stabilize.
4. Press CAL key to calibrate the meter. The primary
display will show the current value of measurement
and the secondary display will show “0.0” to which the
meter is going to be calibrated.
5. Press ENTER key to confirm the calibration. The meter
automatically calibrates to 0% saturation and returns to
the measurement mode.
NOTE: To exit from DO Calibration mode without confirming calibration,
DO NOT press ENTER. Press CAL/MEAS instead
READY
READY
MEAS
%
%
ATC
°C 25.3
MEAS
%
ATC
°C 25.3
CAL
83.4
83.4
100.0
READY
MEAS
CAL
ENTER
HOLD
100.0
READY
READY
MEAS
%
%
ATC
°C 25.3
MEAS
%
ATC
°C 25.3
CAL
3.4
3.4
0.0
READY
MEAS
CAL
ENTER
HOLD
0.0