Vaisala WMT700 - Manual (Page 28)

User's Guide ______________________________________________________________________
Analog Output Signal for Wind Speed Channel
Ordering option 7, Analog Output for Wind Speed, can be
disabled or factory-configured for 8 different modes. WS425
options are usable and backwards compatible when replacing
WS425 sensor with a WMT700 unit.
Table 11 Output Configuration
Option Output Configuration
0 Disabled
1 Voltage output 100 mV/m/s
0 mV = 0 m/s
4000 mV = 40 m/s (WMT701 maximum wind speed)
6500 mV = 65 m/s (WMT702 maximum wind speed)
7500 mV = 75 m/s (WMT703 maximum wind speed)
2 Reserved for future use
3 Current output 4…20 mA, offset 4 mA
4 mA = 0 m/s
20 mA = 40 m/s (WMT701, 0.4 mA/m/s)
20 mA = 65 m/s (WMT702, 0.24615 mA/m/s)
20 mA = 75 m/s (WMT703, 0.21333 mA/m/s)
Error indication sets output to 2 mA
4 Current output 0.2 mA/m/s
0 mA = 0 m/s
8 mA = 40 m/s (WMT701 maximum wind speed)
13 mA = 65 m/s (WMT702 maximum wind speed)
15 mA = 75 m/s (WMT703 maximum wind speed)
5 Reserved for future use
6 Frequency output 10 Hz/m/s
0 Hz = 0 m/s
400 Hz = 40 m/s (WMT701 maximum wind speed)
650 Hz = 65 m/s (WMT702 maximum wind speed)
750 Hz = 75 m/s (WMT703 maximum wind speed)
7 WS425 voltage output 8 mV/mph
0 mV = 0 m/s
716 mV = 89.5 mph (WMT701 maximum wind speed)
1116 mV = 145 mph (WMT702 maximum wind speed)
1344 mV = 168 mph (WMT703 maximum wind speed)
8 WS425 frequency output 5 Hz/mph
0 Hz = 0 m/s
447.5 Hz = 89.5 mph (WMT701 maximum wind speed)
725 Hz = 145 mph (WMT702 maximum wind speed)
840 Hz = 168 mph (WMT703 maximum wind speed)
9 Reserved for future use
A Push up output, 10 Hz/m/s
0 Hz = 0 m/s
400 Hz = 40 m/s (WMT701 maximum wind speed)
650 Hz = 65 m/s (WMT702 maximum wind speed)
750 Hz = 75 m/s (WMT703 maximum wind speed)
B Pull down output 10 Hz/m/s
0 Hz = 0 m/s
400 Hz = 40 m/s (WMT701 maximum wind speed)
650 Hz = 65 m/s (WMT702 maximum wind speed)
750 Hz = 75 m/s (WMT703 maximum wind speed)
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