Hanna-instruments PCA 300 Series Manuel d'utilisateur télécharger pdf (Page 43)

DIAG

To adjust the light level of the blank sample:

1. Press DIAG. The display will show the last diagnostic mode

and the right-most numerical digit will blink.

2. Enter code 999 using the  and  keys. After the code is

selected display will show “d999”.

3. Press DIAG to execute the light level set mode. All the

display digits will blink.

4. The display will show direct reading of the photodetector

cell.

5. Make sure the photometric chamber is well flushed. Stop

the external sample stream from flowing into the system.

The photometric cell is now filled with blank sample solu-

tion.

6. Adjust the trimmer on the power supply board to obtain

a reading between 7300 and 7700.

7. Press any key to leave this mode.

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Hanna-instruments PCA 300 Series Manuel d'utilisateur Page 43