Vaisala HMP46 User Manual
Page 50
HMI41 AND PROBES
Operating Manual
M210316EN-A
46
11.4.2
Accuracies in non-metric units
Accuracy of dewpoint temperature (°F)
RH/%
10
20
30
40
50
60
70
80
90
100
T/
°
F
-40
3.28
1.80
1.33
1.10
0.96
0.86
0.80
0.75
-
-
-4
3.76
2.05
1.50
1.22
1.06
0.95
0.88
0.82
-
-
32
4.52
2.47
1.80
1.46
1.26
1.13
1.03
0.96
0.90
0.86
68
5.16
2.81
2.04
1.65
1.42
1.26
1.15
1.06
1.00
0.95
104
5.83
3.16
2.29
1.85
1.58
1.40
1.27
1.18
1.10
1.04
140
6.48
3.53
2.55
2.05
1.75
1.55
1.41
1.30
1.21
1.14
176
7.22
3.93
2.84
2.28
1.95
1.72
1.55
1.43
1.33
1.26
212
7.95
4.34
3.13
2.52
2.15
1.89
1.71
1.57
1.46
1.38
248
8.75
4.78
3.45
2.77
2.36
2.08
1.88
1.72
1.60
1.50
284
9.56
5.24
3.78
3.04
2.59
2.28
2.05
1.88
1.75
1.64
320
10.4
5.73
4.14
3.33
2.83
2.49
2.24
2.05
1.90
1.79
Accuracy of mixing ratio (gr/lb)
with ambient pressure of 1013.25 mbar
RH/%
10
20
30
40
50
60
70
80
90
100
T/
°
F
-40
0.013 0.014 0.015 0.016 0.018 0.019 0.020 0.021
-
-
-4
0.099 0.108 0.116 0.125 0.134 0.142 0.151 0.159
-
-
32
0.57
0.61
0.65
0.69
0.73
0.77
0.81
0.85
0.89
0.93
68
2.17
2.31
2.44
2.58
2.72
2.87
3.01
3.15
3.30
3.44
104
6.85
7.31
7.77
8.25
8.74
9.25
9.77
10.3
10.9
11.4
140
18.9
20.6
22.3
24.2
26.3
28.5
30.9
33.5
36.4
39.4
176
47.5
54.6
63.0
73.1
85.2
100
118
141
170
208
212
115
151
205
289
434
709
1329
3237
-
-
248
288
530
1235
-
-
-
-
-
-
-
284
-
-
-
-
-
-
-
-
-
-
320
-
-
-
-
-
-
-
-
-
-
Accuracy of absolute humidity (gr/ft
3
)
RH/%
10
20
30
40
50
60
70
80
90
100
T/
°
F
-40
0.001 0.001 0.001 0.002 0.002 0.002 0.002 0.002
-
-
-4
0.009 0.009 0.010 0.011 0.011 0.012 0.013 0.014
-
-
32
0.046 0.049 0.052 0.055 0.058 0.060 0.063 0.066 0.069 0.072
68
0.16
0.17
0.18
0.19
0.20
0.21
0.21
0.22
0.23
0.24
104
0.47
0.49
0.52
0.54
0.56
0.58
0.61
0.63
0.65
0.67
140
1.19
1.24
1.29
1.34
1.39
1.43
1.48
1.53
1.58
1.63
176
2.65
2.74
2.84
2.94
3.03
3.13
3.22
3.32
3.41
3.51
212
5.33
5.50
5.67
5.84
6.01
6.18
6.35
6.52
6.69
6.86
248
9.87
10.2
10.4
10.7
11.0
11.3
11.5
11.8
12.1
12.4
284
17.0
17.5
17.9
18.3
18.7
19.2
19.6
20.0
20.5
20.9
320
27.7
28.3
28.9
29.6
30.2
30.8
31.4
32.1
32.7
33.3