Chapter 8 _____________________________________________________________ Technical Data
VAISALA________________________________________________________________________ 33
CHAPTER 8
TECHNICAL DATA
This chapter provides the technical data of Dewpoint Transmitter
DMT142.
Specifications
Table 7
Measured Variable
Property Description
/
Value
Dewpoint temperature
Measurement range
-80 ... +60 °C (-112 ... +140 °F) T
d
see graph on page 34
Standard version
-60 ... +60 °C (-76 ... +140 °F) T
d
Analog output scalings
option 1
option 2
option 3
-80 ... +20 °C (-112 ... +68 °F) T
d
-60 ... +40 °C (-76 ... +104 °F) T
d
free scaling
Accuracy
(-60 … +60 C / -76 ... +140 °F)
Standard version (-50 … +60 C)
±
3 °C (
±
5.4 °F) T
d
When the dewpoint is below 0 °C
(32 °F) the transmitter outputs
frostpoint
Response time 63% [90%] at
+20 °C gas temperature and 1 bar
pressure
-60
→
-20 °C T
d
(-76
→
-4 °F T
d
) 5 s [10 s]
-20
→
-60 °C T
d
(-4
→
-76 °F T
d
) 45 s [10 min]
ppm volume concentration
Measurement range
70 … 200 000 ppm
Accuracy at +20 °C (+68 °F),
1013 mbar
7.3 ppm + 9.2 % of reading
Содержание Drycap DMT142
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