Vaisala DMT340 - Manual (Page 167)

Chapter 8 _____________________________________________________________ Technical Data
VAISALA _______________________________________________________________________ 165
CHAPTER 8
TECHNICAL DATA
Specifications
Performance
Measured variables
Dewpoint
Sensor
Vaisala DRYCAP®180M
Measurement range -70 ... +80 °C (-94 ... +176 °F) Td
For continuous use -70 ... +45 °C (-94 ... +113 °F) Td
Accuracy
up to 20 bar / 290 psia see the accuracy graph
20 ... 50 bar / 290 ... 725 psia +1 °C Td
0503-039
Figure 90 Dewpoint Accuracy Graph
Response time 63% [90%] at +20°C gas temperature
Flow rate 1 l/min and 1 bar pressure
-60 -> -20 °C Td (-76 -> -4 °F Td) 5s [10s]
-20 -> -60 °C Td (-4 -> -76 °F Td) 45s [10min]
Temperature
Measurement range
0 ... +80 °C (+32 ... +176 °F)
Accuracy ±0.2 °C at room temperature
Temperature sensor Pt 100 IEC 751 1/3 class B
Relative humidity
Measurement range
0 ... 70 %RH
Accuracy (RH <10 %RH, at + 20 °C) ±0.004 %RH + 20% of reading
D
e
w
p
o
int
t
em
pe
ra
tur
e (
°C
)
Temperature of measured gas (°C)
0
40
-60
-80
10
20
30
50
60
70
-10
-20
-30
-50
-40
-70
80
0 -10 -20 -30 -40 10 20 30 40 50 60 70 80
Accu
racy ±
2°C
Td
or bet
ter
Dewpoint measurement range lower limit
Accu
racy
± 3
°C T
d
or be
tter
Wat
er v
apo
r sat
ura
tion
line
Not recommended area for
continuous measurement