Chapter 8 ____________________________________________________________ Technical Data
VAISALA _______________________________________________________________________ 65
CHAPTER 8
TECHNICAL DATA
This chapter provides the technical data of the DPT146.
Specifications
Table 12
Measured Parameters
Parameter Measured
Range
Dewpoint
-60 ... +30 °C (-76 ... +86 °F)
Pressure, absolute
1 ... 10 bar (14.5 ... 145 psi)
Temperature (RS-485 only)
-40 ... +80 °C (-40 ... +176 °F)
Table 13
Calculated Parameters
Parameter Measured
Range
ppm moisture, by volume
1 ... 40 000 ppm
Dewpoint, converted to atmospheric
pressure
-75 … +30 °C (-103 ... +86 °F)
Table 14
Performance
Property
Description / Value
Dewpoint accuracy
±2 °C (±3.6 °F), see Figure 24 on
page 66
Pressure accuracy at 23 °C (73.4 °F)
±0.4 %FS
Pressure temperature dependence
±0.1 % FS/10 °C (18 °F)
Temperature accuracy
0 ... +40 °C (+32 ... +104 °F)
±0.5 °C (± 0.9 °F)
-40 ... +80 °C (-40 ... +176 °F)
±1 °C (± 1.8 °F)
ppm accuracy (7 bar)
±(14 ppm + 12 % of reading)
Sensor response time
Pressure response time
< 1 s
Dewpoint response time
63% [90%] at 20°C and 1 bar
-50 -> -10 °C Tdf
5 s [10 s]
-10 -> -50 °C Tdf
10 s [2.5 min]