Ultrasonic - RainWise PVmet 500 Series User Manual

ULTRASONIC

Provision is provided for connecting an ultrasonic anemometer, showing in Figure 15, instead of the Miniaervane. The ultrasonic sensor
provides both wind speed and direction without any moving parts. The ultrasonic sensor uses the same power as the power in and is
isolated from the rest of the motherboard. The ultrasonic sensor used must be verified capable of using the customer supplied power
in the range from 10 to 30VDC.
Figure 15: Ultrasonic sensor
To install the ultrasonic anemometer, remove the loosen the cap screw and remove the cap. Also remove the cable support plug in
the top of the mast. To wire in the ultrasonic the RJ45 cable can be used to pull the wires for the ultrasonic through the mast section.
It may be easier to cut the RJ45 connector of off the end of the cable then tape the ultrasonic wires to it to pull it through. If the cable
is having difficulty getting through the mast the two bolts holding the PVmet-500 enclosure on the mast can be temporarily removed
and then reinstalled after the cable is pulled through.
The ultrasonic communicates with the PVmet-500 using a serial RS-232 cable. Connect the sensors transmit (TX) to the PVmet-500's
receive (RX) terminal. The sensor RX is connected to the PVmet-500's TX terminal. The ultrasonic sensor provided by RainWise is part
number 500-0913 and is shown below in Figure 16.
Figure 16: RainWise ultrasonic part number 500-0913
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