Oxygen In Air ( O2) Measurement; Temperature Measurement - Lutron Electronics PDO-519 Operation Manual

* As for the thermal
equilibrium to occur
between the probe & the
measurement sample
( liquid ) must be taken,
it will take a few minutes
typically.
4) * 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.
* 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.
5) Rinsed the probe accurately with normal tap water after
each series of measurement.
Install " Probe head protection cover " ( 3-7, Fig, 2 )
into the " Probe head " ( 3-5, Fig. 2 ).
4-3 Oxygen in Air ( O2 ) measurement
After the meter be calibrated ( above procedure 4-1 ),
the meter is ready for O2 ( Oxygen in air ) measurement,
the display will show the indicator " O2% " .
* The Air oxygen measurement value is for reference only.

4-4 Temperature measurement

During the measurement, the lower LCD Display will
show the temperature values of measuring solution.
The method to change the Temp. unit from
" " to "
℃ ℉
" or " " to "
℉
" are :
℃
7
Fig. 2