Thermo Fisher Scientific EcoScan DO 6 - Manual (Page 27)

Instruction Manual DO 6
19
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
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 0.0%
Saturation and returns to
measurement mode.
Figure 10: 0% Saturation Calibration
A value with respect to the
factory default calibration
will be displayed
%
CAL
A
%
HOLD
ENTER
CAL
CAL
%
Calibration point will be
displayed for 1.5 seconds
%
“CO” will displayed for
1.5 seconds
A