HiVol 3000 User Manual 1.7 Installation
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2.2.4 Connecting a Wind sensor or Rain-gauge
Note: It is not possible to connect both a rain gauge
and wind speed/direction sensor at the same time.
The wind speed and direction sensor and tipping bucket rain gauge are optional
accessories. Mounting hardware is included. A 1.7m cable is supplied as standard.
Other length cables may be ordered separately, and can be manufactured to any length
specified. Note that the wind sensor should be installed at a height of 10m if used for
regulatory compliance. Alternatively, the mounting arm and rotating adaptor supplied
may be used to mount the wind sensor to the HiVol. This bolts to the side of the
HiVol cabinet using the fasteners supplied. It is necessary to remove the rear panel to
attach the arm to the cabinet. Remove the power cord before removing the rear panel.
The rear panel is secured by screws in the top plate. When securing the arm, use the
large washers supplied to prevent damage to the cabinet. The cable connects to the 6-
pin socket on the side of the HiVol. A weatherproof cover is fitted to the socket to
exclude dirt and moisture when not in use. This cover should be removed only when a
cable is connected to the socket.
The rotating adaptor is for aligning the sensor to true North. The wind sensor should
be aligned to true north rather than magnetic north. This is usually done using a hand-
held compass and adjusting for the magnetic declination from true north. Align the
directional markings on the wind sensor to the specified direction by rotating the
adaptor, and then tighten the screws.
An alignment locating screw is fitted to the wind sensor that locates in a slot in the
rotating adaptor. This screw should be tightened when the sensor is installed to
electrically ground the sensor to the sampler. This allows removal of the wind sensor
without the need to realign the mounting adaptor.
Set the wind direction conditional sampling parameters in the Wind menu.
The optional rain gauge includes a bracket, which may be mounted to a 25-50mm
pole, preferably over open ground away from the HiVol. The bracket may be mounted
to either a vertical or horizontal pole, or to a vertical surface (eg. the top of a wall.)
The HiVol is factory configured for the wind sensor input (default configuration). If a
rain gauge is used, the configuration should be changed. Refer to the Hidden Menu
section for details of how to set up the HiVol for rain gauge or wind sensor input.
2.2.5 Connecting an External Trigger for remote activation
Refer to section 3.5.2.3 for details on how to setup the Trigger menu for remote
activation.
The external trigger voltage must be between 0 and 5v. If using a contact closure to
trigger the HiVol then the signal must be pulled up to +5v with a 4.7kOhm resistor.
+5V Pullup, ground and Trigger input are available on the external trigger cable.