7 VERIFICATION AND CALIBRATION AquaLab
B for temperatures other than 25
◦
C.)
Measure the water activity of a second verification standard accord-
ing to the verification procedure described above. If both verification
readings are within ± 0.003 a
w
then the instrument is ready to begin
testing. If you still have incorrect verification standard readings after
cleaning the chamber and adjusting for linear offset, contact Decagon
by e-mail at support@aqualab.com or by phone at 509-332-5601 for
further instructions. If you purchased your Decagon instrument from
one of our international distributors, please contact them for local
service and support.
How to Restore Factory Defaults
To restore original calibration settings, do the following:
1. Toggle to the Configuration tab by pressing the Menu icon
button. Select Calibration and press the Enter button (Select
water activity for DUO models.)
2. Scroll down to Defaults and press the Enter icon button to
access the Restore Factory Defaults routine. To cancel and re-
turn to the main menu, press the Cancel icon button. After
pushing the Enter icon button, the Default screen will prompt
you to reset defaults.
Note: For TEV models make sure you have the correct sen-
sor selected.
40
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