Vaisala WAC155, Руководство пользователя

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2. Product Overview
2.1 Vaisala Serial Wind Transmitter WAC155
1 Flange for mounting Vaisala Anemometer
2 Cross arm
3 Junction box containing the component board
4 Flange for mounting Vaisala Wind Vane
WAC155 converts the digital data that is supplied by Vaisala WA15 series wind sensors into
standard serial line messages. The transmitter consists of a component board in a junction box
and a cross arm for mounting the wind sensors.
WAC155 communicates with the system through a 2-wire RS-485 cable. The standard electrical
and mechanical sensor connections are for WA15 wind set anemometers and wind vanes.
WAC155 also provides electrical input for Thies anemometer (4.3351.00.000) and analog vane
(4.3150.00.141). However, these sensors are not directly mountable to the sensor cross arm.
The system supplies power to the wind sensors through the transmitter. The input operating
voltage is 9 ... 31.5 VDC. The transmitter also provides the sensors with a throughput for
heating power. The unit automatically connects the heating power in temperatures below
+4 °C (+39 °F).
The main features of WAC155 are:
• Communication with NMEA 0183 -compliant protocol over RS-485 serial bus with
configurable ID, baud rate, and turnaround delay
• Measurement of the wind parameters using the instant method according to WMO
recommendations
• Computing of wind data average values with adjustable averaging time
• Service connection for configuration and maintenance
• Heating control of sensors with adjustable temperature limits
2.2 Safety
This product has been type-tested for safety. Note the following precautions:
Chapter 2 – Product Overview
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