13
To offset the % saturation reading to match another instrument, see
Section 5.8 —
% Saturation Offset Adjustment
.
New calibration values will automatically override the existing data.
Perform a daily calibration for best results. To completely recalibrate
the meter and when installing a replacement probe, it is best to clear all
calibration data prior to performing the calibration. See Section 5.7
Reset
to Factory Default
.
3.2 Temperature Calibration
For the most accurate DO readings, ensure that the temperature is
accurate. The temperature sensor of the DO 6 PLUS probe has been
factory calibrated, however if it changes over time, or if the probe
is replaced, calibration may be necessary. To protect from erroneous
calibrations, the allowable tolerance is limited to ±5°C adjustment of the
factory default value.
Most users utilize the automatic temperature compensation feature that
uses the sensor that is built into the probe. However, manual temperature
compensation can be used to input a f xed, known temperature.
1. Press
MODE
to select the temperature
mode. The display will show “T” for
temperature and “A” for automatic
temperature compensation.
2. Dip the probe into a solution with a
known, accurate temperature (i.e. a
temperature bath). Allow enough time
for the temperature reading to stabilize.
3. Press
CAL
. The CAL indicator
will blink above the display. The
temperature value shown is the value
based on the factory default.
4. Press or to adjust the reading
to match the correct temperature value
(i.e. of the temperature bath).
5. Press
HOLD/ENTER
to conf rm
the calibration and return to the
measurement mode.
Press
CAL
as needed to exit calibration without
conf rmation at any time.
CAL
CAL
T
T
A
A
TA
TA
CAL
HOLD
ENTER
Factory default
Temperature
Measurement
“CO” will display for
1.5 seconds
