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3
Calibration
11
3.3.1 100% Calibration
1
Rinse the probe well with DI water
or rinse solution.
2
Press
MODE
to select % saturation.
3
Hold the probe in the air with the tip facing
downwards. Wait for the reading to stabilise.
4
Press
CAL
. The CAL indicator and intended
percentage calibration point (100%) display
briefly, before CAL flashes. The % value based
on the factory default calibration is shown.
5
Press
HOLD/ENTER
to confirm the calibration.
The meter displays “CO”, automatically
calibrates to 100.0% air saturation, then
returns to measurement mode.
The Micro 600 DO can be easily calibrated
in air. For best DO accuracy, ensure that the
barometric pressure value is accurate.
The barometric pressure factory default is
760mm Hg, which results in a theoretical
calibration value of 100% saturation in air. If the
barometric pressure setting has been changed
from 760mm Hg, the meter will automatically
adjust to a new % saturation calibration value
instead of 100%. This new value is correct for
the adjusted barometric pressure.
3.3 % Saturation Calibration
4
Press
▲▼
to adjust the reading to match the correct temperature
value (i.e. of the temperature bath).
5
Press
HOLD/ENTER
to confirm the calibration and return to
measurement mode.
Press
CAL
as needed to exit calibration without confirmation at any time.
Micro600DO_ZI INST 1240 16/9/15 12:57 Page 11