Pawkit
Operation
23
fication check is the most important and should
be done more frequently.
Following is a graphical representation of the cali-
bration routine:
Sampling Precautions
Long exposure to a variety of volatile substances or
to samples with water activities near 1.00 can shift
the sensor calibration. Therefore, always remove
samples as soon as the Pawkit is finished sampling
(beeps) to avoid damage to the sensor. If a sample
is accidentally left in the chamber for an extended
period of time, be sure to check the calibration
when the instrument is next used.
Measure 0.76 Standard
OK to
Sample
Adjust 0.76 Calibration
Measure 0.25 Standard
Adjust 0.25 Calibration
Not Correct
If sample
Not Correct
Correct
I
f
s
a
m
p
l
e
a
w
< 0.50
a
w
>
0
.
5
0
C
o
r
r
e
c
t
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