3 common accessories, Common accessories – Campbell Scientific CPEC200 Closed-Path Eddy-Covariance System User Manual
Page 18
CPEC200 Closed-Path Eddy-Covariance System
pump module is similar to the ENC10/12 enclosure. The same mounting
options are available and outlined below:
•
Triangular tower (UT10, UT20, or UT30)
•
Tripod mast 3.8 cm (1.5 in) to 4.8cm (1.9 in) diameter
•
Tripod leg (CM106 or CM106K tripod only)
•
Large pole 10.2 cm (4.0 in) to 25.4 cm (10.0 in) diameter
•
No mounting bracket
Consult the ENC10/12, ENC12/14, ENC14/16, ENC16/18 Instruction Manual,
available at
for details on mounting bracket options.
4.1.3 Common Accessories
There are several items that may be required to complete the installation, but
are not included in the CPEC200. Some of the more common accessories are:
System Power Cable: Two power cables are required for the CPEC200; one
for the main CPEC200 system and one for the EC100 electronics.
The preferred power cable, CABLEPCBL-L, consists of a twisted red/black
pair of wire gauge (AWG) 16 within a rugged Santoprene™ jacket. It is cut to
the specified length and the end is finished for easy installation.
The “-L” designation after certain parts designates a cable or tube
length in feet. The length is specified by the user at the time of
order.
SDM Cable: An SDM communication cable is required to connect the EC100
to the CPEC200 system enclosure. The preferred SDM cable is CABLE4CBL-
L. This cable consists of four conductors with a shield and drain wire, and a
rugged Santoprene™ jacket. It is cut to the specified length and the end is
finished for easy installation.
Pump Tube: A tube must be used to connect the EC155 to the pump module.
If the EC155 is within 50 ft of the pump module, 3/8-in OD tubing, such as pn
26506, is recommended. For longer distances (up to 500 ft), a larger 1/2-in OD
tube (pn 25539) is recommended to minimize pressure drop in the tube. Pre-
swaged pump tube assemblies, such as pn 26504-L, 3/8-in OD, or pn 26503-L,
1/2-in OD, are available for this purpose.
The fittings on the EC155 and the pump module are sized for 3/8-
in OD tubing. A reducer is required at each end for the larger
tubing size. These reducers are supplied as part of the pre-swaged
tube assembly.
Zero/span tubes: Tubes must be used to connect the EC155 and the zero and
CO
2
span cylinders to the valve module. Bulk tubing may be cut to length and
installed onsite using pn 15702 or its equivalent. This tubing has a 1/4-in OD
to fit the Swagelok
®
fittings on the EC155 and the valve module. The tubing
has an aluminum core to minimize diffusion through the tubing wall and a UV-
resistant, black, high-density polyethylene jacket. Maximum tubing length
available is a 500-ft roll.
NOTE
NOTE
8