Vaisala DM500 - Manual (Page 122)

User's Guide ______________________________________________________________________
120 _________________________________________________________________ M210205EN-D
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
-80 -70 -60 -50 -40 -30 -20 -10 0 10 20
Dew / Frostpoint [°C]
De
via
tion
tem
per
a
tu
re
[°
C]
Specifications +
Specifications -
Calibration uncertainty (+2s)
Calibration uncertainty (-2s)
Repeatability (+2s)
Repeatability (-2s)
Figure 23 Dewpoint Temperature Measurement Repeatability
Response time (see the following graph)
Typical Response Tim e for 5 °C Abrupt
Dew / Frostpoint Change (Flow 1.0 slpm)
0
5
10
15
20
25
30
35
40
-70 -60 -50 -40 -30 -20 -10 0 10 20 30 40 50 60
Dew / Frostpoint [°C]
T
ime
to
±
0
.5
°C
fr
om
fi
na
l
re
a
di
ng
[m
inut
es
]
Figure 24 Dewpoint Temperature Measurement Response
Time