Installation; Weather Station; Anemometer; Wiring - RainWise PVMET-330 User Manual

Installation

Weather Station

Mount the support mast securely to a support structure. This may be done by using the
Mono-Mount, which is sold as an accessory to the PVMET-330. The mast may also be
attached to a support structure using U-Bolts. Do not tighten the support structure to the
PVMET-330 unit, as directional orientation will be required.
Rotate the assembled unit until the electronics enclosure faces TRUE SOUTH or TRUE
NORTH if you are in the northern or southern hemisphere, respectively. Secure the
support mast to the assembly. Rotation is prevented by lining up the two holes in each
mast. At this point the entire unit should be secured to the support structure.
It is crucial that the device be oriented as precisely as possible. The wind direction
measurement is directly related to this positioning.

Anemometer

The anemometer is directly attached to the top of the sensor assembly. For correct wind
direction operation, the PVmet-330 must be oriented correctly.
By default the PVmet-330 is configured for operation in the Northern hemisphere. This
only requires that the irradiance sensor faces due South. If the PVmet-330 is going to be
used in the Southern hemisphere it must be mounted with the irradiance sensor facing
North. In addition, the hemisphere jumper inside the PVmet-330 must be changed from
Northern to Southern as shown in the image be in the wiring section.

Wiring

To enter the enclosure with a cable, the front cover must first be removed. Remove the
four Philips head screws from the back of the enclosure. Once the lid is removed, the
circuit board is exposed. The inside of the enclosure will appear as below.

Connecting RS-485

The PVMET-330 is supplied with a half duplex RS-485 serial port.
Wiring connections are made using the 4-pin screw terminal inside of the PVMET-330
electronics enclosure. Cable is not supplied with the unit. The RS-485 lines can be
terminated with a 120 ohm resistor. This can be enabled by moving the termination jumper,
located inside the unit, to the "ON" position. This requires removing the enclosure cover.
To do this, remove the 4 screws on the bottom side of the unit.
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