b. As for the thermal equilibrium to occur between the
probe & the measurement sample must be allowed
to pass, which usually amounts to a few minutes if
the Temp. difference between the two is only
several Celsius degrees.
5)a. In order to measure the dissolved oxygen content in
any given liquid, it is sufficient to immerse the tip of
the probe in the solution, making sure that velocity
of the liquid coming into contact with the probe is at
least 0.2 - 0.3 m/s or to shake the probe.
b. During laboratory measurements, the use of a
magnetic agitator to ensure a certain velocity in the
fluid is recommended. In this way, errors due to the
diffusion of the oxygen present in the air in the
solution are reduced to a minimum.
6)Display will show the Dissolved Oxygen values ( mg/L )
at the same time the left bottom display will show the
Temp. value of the measured solution.
7)Rinsed the probe accurately with normal tap water after
each series of measurement.
Oxygen in the air
When the display unit show " %O2 ", it show the
air Oxygen value approximately.
Change the Temp. unit to
℉
If intend to change the Temp. unit from to ,
℃
℉
please refer page 37, chapter 9-6 ( Temp. Unit
Default Setting )
27
