pcorcoran Posted December 7, 2011 Report Share Posted December 7, 2011 Power Requirements: When connecting WindSensor anemometers to a SymphoniePLUS3'spreconfigured channels (1-3, 13-15) an iPack is requiredand it should be wired: Brown to Excitation White to Signal This is because these channels use the 12V excitation fromthe iPack to create pulses that get fed into the channel as the sensor's Reedswitch turns on and off. When using the SymphoniePLUS3's flex channels(4-6) with a Digital Anemometer SCM no iPack is required; in thisconfiguration it should be wired Brown to Signal White to Ground When using a Symphonie or SymphoniePLUS logger counterchannels (4-6) with a Digital Anemometer SCM, no iPack is required; in thisconfiguration it should be wired Brown to (-) White to (+) The Digital Anemometer SCMroutes the logger's 5V through the sensor's Reed switch. WindSensor Test Instructions: ToolsRequired: Digital voltmeter (DVM) 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 nominally (or 330 ohms). 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 around 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. Link to comment Share on other sites More sharing options...
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