3.8.2 Analog Output Scaling
You can specify the transfer function between measured values and output analog values.
You can select the analog output type as well as the gain and offset used in the transfer
function.
Table 18 Factory Settings for Analog Wind Speed Output
Aout1 Selected Option
Scaling/Gain
Offset
Error
Indication
Example
Voltage
0.1 V/m/s
0 V
10 V
0 V = 0 m/s
7.5 V = 75 m/s
Current 0 ... 20 mA
0.0002 A/m/s
0 A
0.022 A
0 mA = 0 m/s
15 mA = 75 m/s
Current 4 ... 20
mA
WMT701
0.00040000 A/m/s
0.004 A
0.002 A
4 mA = 0 m/s
20 mA = 40 m/s
WMT702
0.00024615 A/m/s
0.004 A
0.002 A
4 mA = 0 m/s
20 mA = 65 m/s
WMT703
0.00021333 A/m/s
0.004 A
0.002 A
4 mA = 0 m/s
20 mA = 75 m/s
WMT704
0.00017777777 A/m/s 0.004 A
0.002 A
4 mA = 0 m/s
20 mA = 90 m/s
Frequency Push-Pull
10 Hz/m/s
0 Hz
1000 Hz
0 Hz = 0 m/s
750 Hz = 75 m/s
WS425 - voltage
8 mV/mph
(0.017895 V/m/s)
0 mph
2 V
0 mV = 0 mph
1.344 V=168 mph
WS425 - frequency
5 Hz/mph
(11.185 Hz/m/s)
0 mph
1000 Hz
0 Hz = 0 mph
840 Hz =168 mph
Frequency Push (PNP)
10 Hz/m/s
0 Hz
1000 Hz
0 Hz = 0 m/s
750 Hz = 75 m/s
Frequency Pull (NPN)
10 Hz/m/s
0 Hz
1000 Hz
0 Hz = 0 m/s
750 Hz = 75 m/s
Table 19 Factory Default Settings for Analog Wind Direction Output
Aout2 Selected
Option
Scaling/Gain
Offset
Error Indication
Example
Voltage
0.02 V/°
0 V
10 V
0 V = 0°
7.2 V = 360°
Chapter 3 – Functional Description
45
Содержание WINDCAP WMT700 Series
Страница 1: ...M211095EN H User Guide Vaisala WINDCAP Ultrasonic Wind Sensor Series WMT700 ...
Страница 17: ...Figure 4 WS425FIX60 POM 1 Clamp 2 Label Figure 5 WMT700FIX60 POM 1 Clamp 2 Label Chapter 2 Product Overview 15 ...
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Страница 199: ...Appendix F WMT700 Accessories Figure 53 Complete Set of WMT700 Accessories Appendix F WMT700 Accessories 197 ...
Страница 201: ...Appendix G Certificate Appendix G Certificate 199 ...
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