eutech-instruments carbon dioxide gas Manuel D’Utilisation

Instruction Manual 

 

Carbon Dioxide Electrode

 

 

15

 TABLE 

4:  Step-wise Calibration for Measurement 

 
          Step      Pipet         Added Volume               Concentration                                          
           1          A             

0.1 ml        

 

109.9 ppm 

           2          A             

0.9 ml        

 

1,089  ppm 

           3          B            

10.0 ml        

 

10,900 ppm 

 

 
 

A =  1 ml graduated pipet;  B = 10 ml volumetric pipet 

 
 
TROUBLESHOOTING GUIDE 
 
The goal of troubleshooting is the isolation of a problem through checking each of the system 
components in turn:  the meter, the glassware, the electrodes, the standards, the sample, and the 
technique. 
 

The meter is the easiest component to eliminate as a possible cause of error. Most meters are 
provided with an instrument check-out procedure in the instruction manual and a shorting strap for 
convenience in troubleshooting. Consult the manual for complete instructions and verify that the 
instrument operates as indicated and is stable in all steps. 
 

Clean glassware is essential for good measurement. Be sure to wash the glassware well with a mild 
detergent and rinse very well with distilled or deionized water. Clean glassware will drain without 
leaving water droplets behind. 
 

The electrodes may be checked by using the procedure found in the sections entitled 

Slope Check. 

 

1. 

Be sure to use distilled or deionized water when following the procedures given in 

Electrode Slope Check. 

 
2. 

If the electrode fails to response as expected, see the sections

  Measuring Hints

  and 

.  Repeat the slope check. 

 
3. 

If the electrode still does not perform as described, determine whether the carbon dioxide 
inner body is working properly as directed in 

. 

 
4. 

If the stability and the slope check out properly, but measurement problems persist, the 
standards may be of poor quality, the sample may contain interferences or the technique 
may be in error.  (See 

 and 

 sections below.) 

 
5. 

Before replacing a "faulty" electrode, review the instruction manual and be sure to: 

            - Clean and rinse the electrode thoroughly. 
             

- Prepare the electrode properly. 

             

- Use proper filling solution, buffer, and standards. 

             

- Measure correctly and accurately. 

             

- Review 

.