Campbell Scientific EC150 CO2 and H2O Open-Path Gas Analyzer and EC100 Electronics with Optional CSAT3A 3D Sonic Anemometer - Manual (Page 21)

EC150 CO
2
/H
2
O Open-Path Gas Analyzer
6. Installation
6.1 Orientation
During operation, the EC150 should be positioned vertically (±15°) so that the
product label reads right side up and the upper arm (source) is directly above
the lower arm (detector). If the sensor is being used with a sonic anemometer,
the anemometer should be leveled and pointed into the prevailing wind to
minimize flow distortion from the analyzer’s arms and other supporting
structures.
6.2 Mounting Analyzer to Support Hardware
The EC150 is supplied with mounting hardware to attach it to the end of a
horizontal pipe of 3.33 cm (1.31 in) outer diameter, such as the CM202 (pn
17903), CM204 (pn 17904), or CM206 crossarm (pn 17905).
There are two different mounting brackets for the EC150. A head only
mounting bracket (pn 26785), and the EC150/CSAT3A mounting bracket (pn
26786). The two mounting brackets are shown in FIGURE 6-1.
The CSAT3A sonic anemometer head is an option when ordering the EC150
and the appropriate mounting bracket is included with the EC150 depending on
if the CSAT3A is ordered. If the user is already in possession of a CSAT3A
and intends to use it with the EC150, the proper mounting bracket should be
specified at time of order.
The screws and bolts for either mounting bracket are easily lost in
the field. Replacements are available through Campbell Scientific
or can be sourced elsewhere. For mounting bracket 26785, use pn
15807 (screw #8-32 x 0.250 socket head) and pn 26712 (screw
3/8-16 x 0.625 hex cap). For mounting bracket 26786, use pn
26711 (screw #8-32 x 0.250 shoulder cap) and pn 26712 (screw
3/8-16 x 0.625 hex cap).
FIGURE 6-1. Mounting bracket options for EC150 head only (pn
26785) or EC150 head with CSAT3A (pn 26786)
NOTE
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