Campbell Scientific EC150 CO2 and H2O Open-Path Gas Analyzer and EC100 Electronics with Optional CSAT3A 3D Sonic Anemometer - Manual (Page 24)

EC150 CO
2
/H
2
O Open-Path Gas Analyzer
6.2.1 Preparing the mounting structure
1. Secure a CM20X crossarm to a tripod or other vertical structure using a
CM210 crossarm-to-pole bracket (pn 17767).
2. Point the horizontal arm into the direction of the prevailing wind.
3. Tighten all fitting set screws.
Do not carry the EC150 by the arms or the strut between the
arms. Always hold the sensor by the block where the upper
and lower arms connect.
6.2.2 Mounting EC150 with optional CSAT3A
The guideline below gives general instructions for mounting an EC150 and
optional CSAT3A to a mounting structure. The order of assembly will
somewhat be determined by the user’s application; primarily the height of the
tower. Steps 6, 7, and 8 should be performed in sequential order.
Please refer to all steps and the referenced figure of this section before deciding
on an assembly strategy. In general, Campbell Scientific suggests that if the
equipment is to be mounted at heights above what can be reached while
standing, to preassemble as much as possible and then hoist that assembly into
a position to be mounted on the appropriate crossarm.
1. Bolt the EC150/CSAT3A mounting bracket (pn 26786; see FIGURE
6-1) to the CM250 leveling mount (pn 26559).
2. Install the CSAT3A sonic head to the EC150/CSAT3A mounting
bracket by aligning the threaded hole on the CSAT3A sonic head with
the hole on the bracket.
3. Insert and finger-tighten the bolt, making sure the bolt is not cross-
threaded. Finish tightening with a wrench.
4. Install the assembly to the end of the crossarm by fitting the leveling
mount over the end of the crossarm.
5. Tighten the set screws on the leveling mount.
6. Install the EC150 gas analyzer head to the EC150/CSAT3A mounting
bracket by tightening the mounting screw and loosely thread the
mounting bolt into the analyzer head.
7. Align the analyzer parallel with the vertical plate of the mounting
bracket and insert the mounting screw and bolt into the slot of the
mounting bracket.
8. Carefully slide the analyzer forward to the desired position. For a
more detailed discussion of positioning the EC150 relative to the
CSAT3A, see Section 6.2, Mounting Analyzer to Support Hardware.
WARNING
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