StirrOx G
Measuring / Operation
7
ba25310d07
08/2018
4
Measuring / Operation
4.1
Calibration
4.2
Measuring
Depth of
immersion
Observe the minimum and maximum depth of immersion of the sensor. The
temperature sensor / auxiliary electrode must be completely submersed for
measurement.
CAUTION
The sensor is designed for immersion measurements in BOD bottles.
Do not expose the sensor to overpressure
(see chapter 7 T
ECHNICAL
DATA
), e.g. due to sealed installation in a pressurized vessel. Danger of
damage to the sensor.
Use of the
integrated
stirrer
The sensor is equipped with an integrated stirring system for the incident flow
of the membrane.
Pressing the On/Off key switches the stirrer on. Pressing once more switches
the stirrer off again.
Measurement in
sample bottles
The displacement volume of the StirrOx G (5,6 ml) is dimensioned so that the
sample bottle is closed free of air bubbles after inserting the sealing plug. If
you use bottles other than the Karlsruhe bottles available at WTW (see
chapter 8 W
EAR
PARTS
AND
ACCESSORIES
), use WHEATON bottles or bottles
with NS 19 standard ground joint only. The plug should have a displacement
volume of 5.6 to 8.6 ml.
For calibration, please refer to the operating manual of the mea-
suring instrument.
Min. approx. 49 mm
Max. 83 mm
Depth of immersion