LaMotte DO 6 Dissolved Oxygen Meter - Manual (Page 18)

3. Hold the probe in the air with the sensor facing downwards. Wait for the
reading to stabilize.
4. Press the CAL key. The display will show the intended percentage
calibration point (100%) with a CAL indicator at the top corner for 1.5
seconds. The CAL indicator will then blink and the display will show a
value which is with respect to the factory default calibration. When
calibration is attempted on a factory calibrated absolute value measurement
of 10.1% to 49.9%, the display will show the absolute value measurement
for 1.5 seconds before displaying Err.1 and goes to the measurement mode.
5. Press the HOLD/ENTER key to confirm the calibration. The meter
displays “CO” for 1.5 seconds and automatically calibrates to 100.0% air
saturation and returns to measurement
mode.
Note: You can offset your % DO
calibration. See Section 7.7 (OFS.6) %
Saturation Offset Adjustment for
directions.
6. Press the HOLD/ENTER key to confirm
the calibration. The meter displays
“CO” for 1.5 seconds and automatically
calibrates to 0.0% Saturation and
returns to measurement mode.
4.4.2 To calibrate 0% Saturation
1. Rinse the probe well with DI water or
rinse solution.
2. Press the MODE key to select the %
Saturation mode, if necessary.
3. Dip the probe into the zero oxygen
solution. Wait for the reading to
stabilize.
4. Press the CAL key. The display will
show the intended percentage
calibration point (0%) with a CAL
indicator at the top corner for 1.5
seconds. The CAL indicator will then
blink and the display will show a value
which is with respect to the factory
default calibration.
Note: When calibration is attempted on a
factory calibrated absolute value
17
CAL
HOLD
ENTER
co
3.0
A
CAL
0.0
A
“CO” will display for
1.5 seconds
A value with respect to the
factory default calibration
will be displayed
0.0
5.2
CAL
Calibration point will be
displayed for 1.5 seconds
Figure 1: 0% Saturation Calibration
%
%
%
%