Technical information

APPENDIX E
3/31/2008 Rev. 4.3 E - 1
APPENDIX E
CANOPY CHAMBER — ASSEMBLY INSTRUCTIONS
The Canopy Chamber Attachment is another feature of Closed System measurements. This
attachment is designed to be used with the canopy chamber enclosures measuring canopy
photosynthesis. The enclosures could be of varying sizes, all of which the user can determine. The
following conditions represent the kinds of enclosures that are acceptable:
• Materials that are not light-reflected, gas-permeable, light-impenetrable (such as plastic
bags, acrylic shells, most glass canopies)
• Larger than the manufacturer’s LC-10 chamber (4-liter volume)
• Larger than the measuring sample environment
For accurate installation of this attachment (see Figure E-1), the chamber enclosure must
accommodate for an (circular) opening (approximately 65 mm (2-1/2”)) on one of the sides. An
additional slot can be made for the PAR sensor on the enclosure for accurate measurements of
ambient light intensity. Canopy Chamber Attachment ‘A’ has a position for the PAR sensor
placement; however, this position will not always provide reliable measurements of ambient light
intensity.
To prepare for measurements, align Attachment ‘A’ and Attachment ‘B’ with the seals facing the
enclosure. With this alignment, the tubes (in Attachment ‘A’) should slide into the respective holes in
Attachment ‘B’. Secure the entire Canopy Chamber Attachment onto the enclosure by tightening the
thumbscrews from Attachment ‘B’.
NOTE: When using the IR Temperature sensor, be sure that the 65mm diameter opening is clear
of any obstruction from within the enclosure. This is to ensure accurate leaf temperature
measurements.
Now, attach the Canopy Chamber Attachment to the CI-340 by gently sliding the exposed tubes into
the holes and tightening the locking screw of the CI-340. Place the IR Temperature sensor firmly into
the opening located on Attachment ‘A’. Plug the IR Temperature sensor connector into its CI-340
port. Finally, insert the PAR sensor into the slot of Attachment ‘A’ or in the enclosure opening. If the
chamber enclosure is made of flexible material, a tripod is suggested for an appropriate support of the
CI-340.