Synergy Controller Technical Manual, Revision H
Page 43
Vaisala HMM30C Temperature Compensation
Vaisala Relative Humidity sensors are available in temperature compensated and uncompensated versions
(HMM30C) and the Synergy Controller is compatible with both types. In addition the controller can
accommodate sensors with 0-5VDC and 4-20mA outputs.
The Synergy Controller uses the Vaisala recommended temperature compensation algorithm for the
HMM30C. The algorithm is a second order polynomial defined over four temperature ranges by the following
table of coefficients.
Where: a0, a1, b0, b1 are constants with the values as determined in the table below:
Vaisala Constants
Temp Range (C)
a0
a1
-40…-20
-0.104980
-0.060009
-20…+15
0.469374
-0.031292
+15…+45
0.000000
0.00000
+45…+180
-1.536460
0.034144
Temp Range (C)
b0
b1
-40…-20
0.947370
-0.008510
-20…+15
1.050385
-0.003359
+15…+45
1.000000
0.000000
+45…+100
0.889657
0.002452
+100…+180
0.551922
0.005829
And Where:
Offset compensation:
A = a0 + b0 * T
Gain compensation:
B = b0 + b1 * T
RH Compensated = (RH Raw + A) * B
The following is a table of example temperature readings (T) and uncompensated raw relative humidity
readings (RH raw). The last column displays the compensated relative humidity reading (Vaisala RH
Corrected).
Vaisala Temperature Compensation
T
RH
Raw
a0
a1
b0
b1
A
B
Vaisala RH
Corrected
60
70
-1.53646
0.034144
0.889657
0.002452
0.51218
1.036777
73.105
60
80
-1.53646
0.034144
0.889657
0.002452
0.51218
1.036777
83.473
60
100
-1.53646
0.034144
0.889657
0.002452
0.51218
1.036777
104.209
70
40
-1.53646
0.034144
0.889657
0.002452
0.85362
1.061297
43.358
70
60
-1.53646
0.034144
0.889657
0.002452
0.85362
1.061297
64.584
70
80
-1.53646
0.034144
0.889657
0.002452
0.85362
1.061297
85.810
70
100
-1.53646
0.034144
0.889657
0.002452
0.85362
1.061297
107.036
80
30
-1.53646
0.034144
0.889657
0.002452
1.19506
1.085817
33.872
80
40
-1.53646
0.034144
0.889657
0.002452
1.19506
1.085817
44.730
80
60
-1.53646
0.034144
0.889657
0.002452
1.19506
1.085817
66.447
80
80
-1.53646
0.034144
0.889657
0.002452
1.19506
1.085817
88.163
80
100
-1.53646
0.034144
0.889657
0.002452
1.19506
1.085817
109.879
85
30
-1.53646
0.034144
0.889657
0.002452
1.36578
1.098077
34.442
85
40
-1.53646
0.034144
0.889657
0.002452
1.36578
1.098077
45.423
85
60
-1.53646
0.034144
0.889657
0.002452
1.36578
1.098077
67.384
85
80
-1.53646
0.034144
0.889657
0.002452
1.36578
1.098077
89.346
85
100
-1.53646
0.034144
0.889657
0.002452
1.36578
1.098077
111.307
100
60
-1.53646
0.034144
0.889657
0.002452
1.87794
1.134857
70.223
100
80
-1.53646
0.034144
0.889657
0.002452
1.87794
1.134857
92.920
100
100
-1.53646
0.034144
0.889657
0.002452
1.87794
1.134857
115.617
54
30
-1.53646
0.034144
0.889657
0.002452
0.307316
1.022065
30.976
Содержание Synergy Compact
Страница 14: ...Synergy Controller Technical Manual Revision H Page 14 2 0 SPECIFICATIONS 2 1 Data Sheet...
Страница 71: ...Synergy Controller Technical Manual Revision H Page 71...
Страница 106: ...Synergy Controller Technical Manual Revision H Page 106...
Страница 123: ...Synergy Controller Technical Manual Revision H Page 123...
Страница 141: ...Synergy Controller Technical Manual Revision H Page 141 TE1151 6 Triac Output Board Schematic...
Страница 142: ...Synergy Controller Technical Manual Revision H Page 142 TE1708 6 Relay Board Schematic...
Страница 188: ...Synergy Controller Technical Manual Revision H Page 188...
Страница 274: ...Synergy Controller Technical Manual Revision H Page 274 Synergy Controller Step Syntax...
Страница 294: ...Synergy Controller Technical Manual Revision H Page 294...
Страница 312: ...Synergy Controller Technical Manual Revision H Page 312...
Страница 345: ...Synergy Controller Technical Manual Revision H Page 345...
Страница 346: ...Synergy Controller Technical Manual Revision H Page 346...