Verifi Cation Of Calibration - Decagon Devices AquaLab 4TE Operator's Manual

AquaLab
6. Cleaning and Maintenance
e. Visually inspect the thermopile and optical sensor for cleanli-
ness. Re-clean if necessary.
4. Additional Drying Time
a. Visually inspect the sample chamber and sensors for contami-
nants, including moisture. If necessary, repeat the cleaning
process using new Kimwipes.
b. Let stand for about 5 minutes to ensure the sample chamber
is dry.

Verifi cation of Calibration

After you have cleaned the chamber and other parts of your AquaLab,
it is important to check the instrument's performance in order to
correct for any linear off set that may have occurred during the clean-
ing process.
Before you check the instrument we recommend that you run a
sample of the activated charcoal pellets provided in your AquaLab
cleaning kit. Th is cleans the air inside the chamber, helping it come
back to a stable sampling environment.
Verify the linear off set against known verifi cation standards accord-
ing to the procedure described in the next chapter. If a linear off set
has occurred, refer to "adjust for linear off set" section in Chapter 7
for directions on how to correct for linear off set. If, after adjusting
for linear off set, your instrument is still not reading samples cor-
rectly, please contact Decagon for support.
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