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Orion 420 Weather Station 23
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Columbia Weather Systems, Inc.
1. If the sensor transmitter is already mounted, loosen the fixing screw on the mounting adapter.
2. Use a compass to determine that the transducer heads are exactly in line with the compass and
that the arrow on the bottom of the transmitter points to north.
3. Tighten the fixing screw on the mounting adapter when done.
Once the sensor transmitter is aligned to north, the transmitter can be removed from the mounting
adapter without loosing the north orientation.
Installing the Mast
The sensor transmitter measures wind speeds of up to 115 mph (60 m/s). However, unless the mast is
properly mounted to withstand such high winds, this capability is useless. Please read these instructions
carefully to insure a safe and reliable installation. Mounting the mast and the sensor transmitter should be
comparable in scope to installing a TV antenna.
There are three acceptable methods for mounting the mast to a roof or building structure: Sloped roof
mounting, flat roof mounting or wall mounting. See Optional Sensor Mounting Hardware for more
information.
Location
Do not attach the sensor transmitter to a chimney or a TV or radio transmitting mast or tower.
Select a mounting location that will allow the sensor cable to be routed away from TV antenna cables and
other data cables to avoid interference.
Do not mount sensors close to power lines or telephone lines. For normal roof mounting, the
recommended minimum distance from power or telephone lines is 25 ft. (8 m). Use extreme caution when
working close to power lines.
Never route sensor cables in tall trees.
Mounting Method
Choose the appropriate mounting method for the installation and obtain the necessary mounting
hardware. Refer to Section 4 for information on optional sensor mounting hardware and accessories
which are available from the factory.
If the mounting hardware is not obtained from the factory, be certain to use metal parts which are plated
or galvanized to assure maximum longevity.
Secure the mast to the roof, using guy wires with sufficient tensile strength. The Wall Mounting Method
should utilize a mast of no more than 5 ft. maximum height, unless it can be secured with guy wires.