CID Bio-Science CI-340 - Stomatal Conductance; Open and Closed Systems

CI-340 Operation Manual
CID Bio-Science
1554 NE 3
rd
Ave
Camas, WA 98607, USA
Phone: +1 (360) 833-8835
Fax: +1 (360) 833-1914
sales@cid-inc.com
www.cid-inc.com
27
The closed system recirculates the air in the system; the open system sends a constant flow of external
air into the system. There are five available sizes of leaf chambers to conduct experiments for the open
system method (Table 2). Generally, the manufacturer recommends choosing a chamber large enough
to contain the leaf environment (i.e., using a leaf larger than the chamber area would produce
inaccurate results).
Determine the best size chamber (Table 2) for the measurements to be taken. Proceed to insert and
attach the leaf chamber to the CI-340. Refer to the LEAF CHAMBER — CARE AND USE chapter for
proper applications of the leaf chamber(s). Then press the or and key(s) to begin the
measurement process.
Table 2: Open system chamber sizes.
Chamber Types
Window Size (W x L mm)
Window Area (cm
2
)
Square
25 x 25
6.25
Narrow Rectangular
65 x 10
6.5
Wide Rectangular
55 x 20
11
Small Cylindrical
25 x 90
22.5
Large Cylindrical
50 x 70
35
The closed system environment deals with chambers of variable volume. Each individual chamber is
designed to interchange with the CI-340; however, they serve different sizes of the plant element. There
are four available sizes of leaf chambers to conduct experiments for the closed system method (Table 7-
2).
When using the closed system, refer to Table 7-2 for such related values. Also, refer to the LEAF CHAMBER
—CARE AND USE chapter for proper applications of the leaf chamber. Press the or and
key(s) to begin the measurement process. The duration of collecting measurements is dependent upon the
needs of the user.