WP
4
PotentiaMeter
Cleaning and Maintenance
52
inside the case.
2. Check once more to make sure there is no
debris in the sample chamber cavity.
3. Replace the block, and insert the ribbon cable
socket into to the 20-pin plug on the block. Lock
it in place with the locking levers.
4. Screw the thumb-screws on the block back in
until they are hand-tight.
5. Replace the case lid and secure the lid screw.
6. Plug the WP4’s power cord back in.
Checking Calibration
After you have cleaned the chamber and other parts
of your WP4, it is important to check the instru-
ment’s performance in order to correct for any cali-
bration drift that may have occurred during cleaning
procedures.
Check the calibration of your instrument by measur-
ing the water potential of the KCl standard. If a
change has occurred, refer to chapter 5 for direc-
tions on how to recalibrate. If, after adjusting cali-
bration your instrument is still not reading samples
correctly, contact Decagon for technical support.
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