eutech-instruments ecoscan do 6 do meter Manuel D’Utilisation

Page de 76
Instruction Manual 
DO 6 
 
 
20
 
Figure 12: mg/L (ppm) 
Concentration Calibration Sequence
 
4.5 Dissolved 
Oxygen 
Calibration in mg/L or 
ppm concentration mode  
Calibrating the meter to 100% Saturation 
will also calibrate the concentration mode 
at the value in mg/L corresponding to 
100% Saturation. This should produce 
acceptable results in most applications.  
This meter also lets you make a calibration 
adjustment in mg/L (ppm) Concentration 
mode without affecting your % Saturation 
calibration.  
To select between mg/L and ppm units, 
see page 38, “Selection of mg/L or ppm 
mode”.  
4.5.1 
To calibrate in mg/L (ppm) 
Concentration mode:  
1)  Calibrate 100% Saturation as per 
Section 4.4. 
2)  Rinse the probe well with DI water or 
rinse solution. Wipe the outside of the 
probe carefully (do not touch the 
membrane).  
3)  Dip the probe into a sample of known 
oxygen concentration. Wait for the 
reading to stabilize.  
4)  Press the MODE key to select the 
mg/L (ppm) Concentration mode.  
5)  Press the CAL key. The display will 
show a value which is with respect to 
mg/l
mg/l
mg/l
CAL 
CAL
HOLD
ENTER
CAL 
mg/l
“CO” will display 
for 1.5 seconds
A
A
A value with respect to the 
factory default calibration 
will be displayed