Accuracy Of The Calculated Quantities - Vaisala HUMICAP HMP41 User Manual

HMI41 AND PROBES
Operating Manual
11.3.3
Operating temperature range
Storage temperature range
Material:
handle
pipe
cable
Housing classification (electronics)
Weight
11.4

Accuracy of the calculated quantities

Dewpoint temperature, mixing ratio, absolute humidity and wet bulb tempera-
ture are calculated from the measured relative humidity and temperature
values. The accuracy of the calculated quantities depends on the calibration of
the probe and on performing the measurement correctly. In tables below the
accuracies of the measured values are 2 %RH and 0.2 C.
11.4.1
Accuracy of dewpoint temperature (°C)
T/ C
44
General
sensor head
Accuracies in metric units
RH/%
10 20
1.82 1.00
-40
-20 2.09 1.14
0 2.51 1.37
20 2.87 1.56
40 3.24 1.76
60 3.60 1.96
80 4.01 2.18
4.42 2.41
100
120 4.86 2.66
140 5.31 2.91
160 5.80 3.18
-20...+60 C
-40...+100 C (temporarily + 180 C)
-40...+80 C
ABS plastic
stainless steel
PVC spiral cable
IP65 (NEMA 4)
450 g (incl. package)
30 40 50
0.74 0.61 0.53 0.48
0.83 0.68 0.59 0.53
1.00 0.81 0.70 0.63
1.13 0.92 0.79 0.70
1.27 1.03 0.88 0.78
1.42 1.14 0.97 0.86
1.58 1.27 1.08 0.95
1.74 1.40 1.19 1.05
1.92 1.54 1.31 1.16
2.10 1.69 1.44 1.27
2.30 1.85 1.57 1.38
M210316EN-A
60 70 80 90
0.44 0.42 -
0.49 0.45 -
0.57 0.53 0.50
0.64 0.59 0.55
0.71 0.65 0.61
0.78 0.72 0.67
0.86 0.79 0.74
0.95 0.87 0.81
1.04 0.96 0.89
1.14 1.05 0.97
1.24 1.14 1.06
100
-
-
0.48
0.53
0.58
0.64
0.70
0.76
0.84
0.91
0.99