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For accurate DO measurements, a water movement of
0.3 m/s is required. This is to ensure that the oxygen-
depleted membrane surface is constantly replenished. A
moving stream will provide adequate circulation.
The use of a magnetic stirrer to ensure a certain fluid
velocity is recommended.
TEMPERATURE MEASUREMENTS
The DO probe features a built-in temperature sensor,
for temperature measurement and compensation.
The temperature value is displayed on the secondary
LCD level.
Allow the probe to reach thermal equilibrium before tak-
ing any measurement. This can take several minutes.
The greater the difference between the temperature at
which the probe was stored and the temperature of the
sample, the longer the time will be.
Note: If the display shows only dashes “----”, the DO
probe is not properly connected or the tempera-
ture is out of range. This can also indicate a bro-
ken probe cable.
Summary of Contents for AD 630
Page 8: ...8 FRONT AND TOP PANELS...
