User`s guide

Chapter 11 ____________________________________________________ Technical Specifications
DMP74A
Response time: 63 % (90 %) at flow rate 0.2 m/s, 1 bar
absolute pressure, +20 ˚C
0 Æ-40 ˚C T
d
(32 Æ40 ˚F T
d
) 20 s (120 s)
-40 Æ0 ˚C T
d
(-40 Æ32 ˚F T
d
) 10 s (20 s)
DMP74B/C
Response time: 63 % (90 %) at flow rate 0.2 m/s, 1 bar
absolute pressure, +20 ˚C
0 Æ -60 ˚C T
d
(32 Æ76 ˚F T
d
) 50 s (340 s)
-60 Æ0 ˚C T
d
(-76 Æ32 ˚F T
d
) 10 s (20 s)
Temperature
Measurement range -10 ... 60 ˚C (14 ... 140˚F)
Accuracy at +20 ˚C ±0.2 ˚C (±0.36˚F)
Typical temperature
dependence of electronics ±0.005 ˚C/˚C
Temperature sensor Pt100 IEC751 1/3 class B
PPM (ppm
v
or ppm
w
)
Measurement range (typical)
DMP74A 40 ... 200000 ppm
DMP74B/C 10 ... 20000 ppm
Accuracy at +20 ˚C (+68 ˚F)
< 40 ppm ± (0.5 ppm + 25.4 % of
reading)
> 40 ppm ± (7.3 ppm + 8.3 % of
reading)
VAISALA _______________________________________________________________________ 83