6400-05 Conifer Chamber Installation - LI

6400-05 Conifer Chamber Installation - LI
6400-05 Conifer Chamber
Installation Instructions for the LI-6400 Portable Photosynthesis System
Follow the steps below to install the Conifer Chamber, and read the operational considerations for information on configuring the
LI-6400 software to compute leaf temperature using energy balance.
The sensor head handle must be removed to accomodate the 6400-05, so
a tripod is usually required for making measurements.
1. Remove the male end of the leaf temperature thermocouple connector by pulling straight out, and pull the air hose from the underside
of the leaf chamber.
Adjustment Nut
Hose Barb
Remove the handle assembly:
a. Unscrew the knurled leaf chamber adjustment nut (turn clockwise) until it is free of the handle (Figure 2).
b. With the handle latching mechanism in the closed position, wrap
tape or string around the handle (where your hand would normally be) so that it will stay together. Failure to do so may
result in the spring coming out. Leave the handle secured in
this manner.
c. Remove the 2 screws (3 on some instruments) on the back side
of the handle, as shown in Figure 3, using a #1 Phillips head
Remove these
3 screws
Unplug the log switch (not used with the conifer chamber). If the
log switch wires are threaded underneath the bottom cover of the
sensor head, this cover must be removed to free the log switch connector.
a. Turn the sensor head over and remove the 3 Phillips head screws
as shown in Figure 1.
b. Remove the hose barbs, if necessary. You may be able to slide
the cover out from underneath the hose barbs; be careful not to
damage the PC board under the cover. If you remove the hose
barbs, be sure and note the position of the sample and reference
air hoses; the sample hose is wrapped with a piece of black
shrink wrap.
c. Free the wires.
d. Re-assemble the cover on the bottom of the sensor head.
Sample Air Hose
Figure 1. Remove the 3 screws on the sensor head
bottom cover.
Quantum sensor
Remove these
2 (or 3) screws
Figure 2. Unscrew the knurled adjustment nut.
Figure 3. Remove the 2 or 3 screws on the back of
the handle.
Remove the upper half of the leaf chamber.
a. Remove the 2 screws from the hinge on the rear of the upper
half of the leaf chamber (Figure 4).
b. Unhook the connector from the PAR sensor or LED light source,
if necessary.
5. Remove the lower half of the leaf chamber. There are 8 hex head
cap screws on the optical bench cover, as shown in Figure 5. Remove the cap screws with a 5/64” hex key (in the spares kit). The
lower half of the leaf chamber can now be removed. Unplug the air
hose connecting the chamber and match valve. Note that the screw
nearest the leaf chamber forms a metal-to-metal seal in the air pathway, and must be tight upon re-assembly of the standard leaf chamber.
6. Attach the conifer chamber mounting block with the 8 hex head cap
screws from the previous step. Note that there is a thin vinyl gasket
on the top surface of the optical bench. This gasket is reusable; it
should adhere to the optical bench, but if it becomes detached, be
sure to reposition it before attaching the mounting block. Tighten
the 8 screws evenly.
7. Attach the lamp connector to the back of the conifer chamber mounting plate.
8. Open the 6400-05 and attach to the mounting block using the 4 screws
provided (Figure 6).
9. Connect the air hose between the hole in the front of the chamber
and the match valve.
10. Attach the tripod mounting bracket to the sensor head. The finished
assembly should look like Figure 7.
NOTE: When removing the conifer chamber and reattaching the handle,
the wires to the log switch need not be threaded beneath the sensor head
Quantum sensor
Remove these
2 screws
Figure 4. Remove the 2 screws from the handle hinge.
Top View
Lower leaf
chamber cuvette
Make sure this screw
is tightly sealed upon
re-assembly of leaf
Hex head screws (8)
Figure 5. Remove the 8 hex head cap screws.
Quantum Sensor
Quantum Sensor Holder
Mounting Plate
Lamp Connector
Figure 6. Attach the chamber to the mounting block.
Tripod Head
Tripod Mounting
Figure 7. Finished 6400-05 assembly.
J.J.Landsberg and M.M.Ludlow, 1969. A technique for determining resistance to mass transfer through the boundary layers of plants
with complex structure. Journal of Applied Ecology. (7)187-192
LI-COR, inc. ● Environmental ● 4421 Superior Street ● P.O. Box 4425 ● Lincoln, Nebraska 68504 USA
Phone: 402-467-3576 ● FAX: 402-467-2819 ● Toll-free 1-800-447-3576 (U.S. & Canada)
e-mail: envsales@licor.com ● http://www.licor.com
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