Power Requirements:
When connecting WindSensor anemometers to a SymphoniePLUS3's
preconfigured channels (1-3, 13-15) an iPack is required
and it should be wired:
-
Brown to Excitation
-
White to Signal
This is because these channels use the 12V excitation from
the iPack to create pulses that get fed into the channel as the sensor's Reed
switch turns on and off.
When using the SymphoniePLUS3's flex channels
(4-6) with a Digital Anemometer SCM no iPack is required; in this
configuration it should be wired
-
Brown to Signal
-
White to Ground
When using a Symphonie or SymphoniePLUS logger counter
channels (4-6) with a Digital Anemometer SCM, no iPack is required; in this
configuration it should be wired
-
Brown to (-)
-
White to (+)
The Digital Anemometer SCM
routes the logger's 5V through the sensor's Reed switch.
WindSensor Test Instructions:
Tools
Required:
Instructions
(WindSensor cups NOT spinning):
- Disconnect
the WindSensor from the data logger.
- Set your digital volt meter to
the 2K ohm scale.
- Measure the resistance between
the White wire (+) and Brown Wire (-) -- cups NOT spinning.
- A reading of either .OL (Open
Loop) or 0.330 (or 330 ohms) is normal. Slowly move the cups and stop once
you get a reading. Note: the digital volt meter will give a higher reading
if the cups are spinning, you want to do this extremely slowly and stop
every time you get a numerical reading. It should settle to 330 ohms when
the cups not moving.
- In a single 360 degree rotation of
the head, you should see the sensor switch from .OL to 330 ohms to .OL to
330 ohms. Since this is reed switch anemometer, these are the pulses that
the logger is reading.