Vaisala DMT143 - Manual (Page 71)

Chapter 8 _____________________________________________________________ Technical Data
VAISALA ________________________________________________________________________ 69
CHAPTER 8
TECHNICAL DATA
This chapter provides the technical data of the DMT143.
Specifications
Table 14 Measured Parameters
Property Description / Value
Dewpoint temperature
Measurement range (typical) -60 ... +60 °C (-76 ... +140 °F) T
d
*
Analog output scalings
Option 1 -80 ...+20 °C (-112 ... +68 °F) T
d
Option 2 -80 ...+20 °C (-112 ... +68 °F) T
d
Dewpoint at ambient pressure
Option 3 Free scaling
Accuracy in air or N
2
±2 °C (±3.6 °F) T
d
See Figure 24 on page 70.
Response time 63% [90%]
at +20 °C (+68 °F), 1 bar pressure
-60 -> -20 °C Td (-76 -> -4 °F Td) 5 s [15 s]
-20 -> -60 °C Td (-4 -> -76 °F Td) 45 s [10 min]
PPM volume concentration
Measurement range 10 ... 40 000 ppm (typical)
Accuracy at +20 °C (+68 °F),
1 bar pressure
1 ppm + 20% of reading
* When the dewpoint is below 0 °C (32 °F), the transmitter outputs frostpoint.