CS IRGASON, Instruction Manual

Page: 19 / 74

IRGASON
®
Integrated CO
2
/H
2
O Open-Path Gas Analyzer and 3D Sonic Anemometer
7
5.4 Power Requirements During Power-up and Operation
Power requirement
Source: 10 to 16 Vdc
Load
at 25 °C:
420 mA
at 25 °C in power-down mode 1 : 250 mA
1
sonic anemometer fully powered and gas analyzer in stand-by
6. Installation
6.1 Orientation
During operation, the IRGASON should be leveled and pointed into the
prevailing wind to minimize flow distortions from the instrument arms and
other supporting structures. Leveling can be done using the leveling bubble on
top of the instrument block. In the proper orientation, the product label will
read right-side-up, with the upper arm (source) of the gas analyzer directly
above the lower arm (detector).
6.2 Mounting
The IRGASON is supplied with mounting hardware to attach it to the end of a
horizontal pipe with a diameter of 1.31 in., such as the Campbell Scientific
CM202, CM204, or CM206 crossarm. The following steps describe the normal
mounting procedure. Refer to FIGURE 6-1 .
1. Secure the chosen crossarm to a tripod or other vertical structure using a
CM210 Crossarm-to-Pole Mounting Kit (pn 17767).
2. Point the horizontal arm into the direction of the prevailing wind and
tighten the nuts and bolts.
Do not carry the IRGASON by the arms or the strut
between the arms. Always hold it by the block, where
the upper and lower arms connect.
3. Bolt the IRGASON mounting bracket (pn 27496) to the CM250 Leveling
Mount (pn 26559) (see FIGURE 6-1 ).
4. Install the IRGASON to the mounting bracket by inserting the mounting
bolt and pin into the corresponding holes. Tighten the bolt. Make sure the
analyzer is vertically oriented so the label is right-side-up and the upper
arm (source) is directly above the lower arm (detector).
5. Mount the IRGASON assembly by fitting the boom adapter over the end
of the crossarm. Tighten the set screws on the boom adapter with a 3/16-
inch hex socket head wrench.
WARNING