eutech-instruments ecoscan do 6 do meter Manuel D’Utilisation
Instruction Manual
DO 6
25
5.3 Taking
Measurements
During measurement, care must be taken to ensure that the probe’s membrane
surface does not touch anything. Stir around the solution to prevent any air
bubbles from being trapped on the
membrane before taking a reading.
surface does not touch anything. Stir around the solution to prevent any air
bubbles from being trapped on the
membrane before taking a reading.
IMPORTANT: Since the DO probe
consumes oxygen from the sample, the
sample must constantly flow past the
membrane to achieve more accurate
readings. You can use a stirrer to
accomplish this.
sample must constantly flow past the
membrane to achieve more accurate
readings. You can use a stirrer to
accomplish this.
5.3.1
To take measurements:
1) Rinse the probe well with DI water or
rinse solution.
2) Select the appropriate measurement
mode. Press the MODE key to toggle
between modes:
between modes:
a. Percentage Saturation (%)
b. Concentration (mg/L) or (ppm)
c. Temperature
(T)
3) Dip the probe into the sample. Stir the
solution gently to homogenize the
sample. Make sure that the sample is
continuously flowing past the membrane sensor.
sample. Make sure that the sample is
continuously flowing past the membrane sensor.
4) Take your measurements once your meter reading has stabilized.
Note: “Ur”/”Or” will be displayed if the instruments exceeds the specified
measuring range. See Section 12
measuring range. See Section 12
for range specification.
To select between mg/L and ppm units, see Set Up menu on page 38.
%
A
mg/l
A
MODE
MODE
TA
Figure 15: Measurement mode