
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
Dewpoint temperature (°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
Accuracy ± 2°C Td
or better
Dewpoint measurement range lower limit
Accuracy ± 3°C Td
or better
Water vapor saturation line
Not recommended area for
continuous measurement
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