Campbell Scientific EC155 CO2 and H2O Closed-Path Gas Analyzer and EC100 Electronics with Optional CSAT3A 3D Sonic Anemometer - Manual (Page 18)

EC155 CO
2
and H
2
O Closed-Path Gas Analyzer
5.4 Power Requirements
Voltage supply: 10 to 16 Vdc
Power at 25 o C including CSAT3A: 4.8 W
Power at 25 o C excluding CSAT3A: 4.0 W
Power at 25 o C in power-down
mode (CSAT3A fully powered
and EC155 in stand-by): 3.0 W
Power for optional heated intake: set by user, 0 to 0.7 W.
6. Installation
6.1 Mounting
The EC155 is supplied with mounting hardware to attach it to the end of a
horizontal pipe of 1.31 inch outer diameter, such as the CM202, CM204, or
CM206 crossarm (pn 1790x). The EC155 mounting hardware also
accommodates an optional CSAT3A sonic anemometer, placing it at the proper
position when the EC155 is configured with the optional heated intake
assembly. The following steps describe the normal mounting procedure with
the optional heated intake assembly and optional CSAT3A sonic head. Other
mounting arrangements are acceptable as long as the analyzer is upright. The
bottom of the analyzer has two #6-32 UNC-thread mounting holes for
applications that do not use the EC155 mounting platform.
Refer to FIGURE 6-1 throughout this section.
a. Mount a CM202, CM204, or CM206 crossarm (pn 1790X) to a tripod or
other vertical structure using a CM210 crossarm-to-pole bracket (pn
17767). The crossarm should be within ± 7 degrees of horizontal to allow
the CSAT3A sonic anemometer to be leveled.
Do not carry the EC155 by the intake or the CSAT3A by the
arms. Always hold the instruments by the body or base.
b. Mount the CM250 leveling mount (pn 26559) on the end of the crossarm.
Tighten the set screws on the leveling mount.
c. Bolt the mounting platform (pn 26570) to the CM250 leveling mount (pn
26559).
d. Place the EC155 gas analyzer on the mounting platform so the four rubber
feet fit into the platform holes, and tighten the captive screws located on
the bottom of the platform into the mounting holes on the bottom of the
analyzer.
e. If a CSAT3A is being used, mount it on the end of the mounting platform
using the captive CSAT3A mounting bolt.
WARNING
8