LI-COR LI-190R Installation Manual

Using the LI-190R with an 8200-104/C
Long-Term Chamber

Helpful tools

#1 Phillips-head screwdriver
Hex wrench: 5/32 in or 4 mm
Hammer or mallet (optional)
Scrap block of wood (optional)
The quantum sensor package (part number: 190R-8200)
includes a mounting plate and leveling stake used to mount
and level the sensor.
To use the LI-190R Quantum Sensor, you'll need to install it
to the 8200-104/C Long-Term Chamber and enter its cal-
ibration information into the LI-8250 Multiplexer user inter-
face.
Note: Remove the protective red cap from the light sensor
before using it. The cap should NOT be in place during
measurements. It is to protect the sensor during shipping
and storage.

Installing the sensor

Installing the sensor takes just a few steps.
1 Choose a position for the sensor so that it will not be
shaded, from either the surrounding landscape or the
chamber itself, and so that the sensor and its cable
will not interfere with the chamber opening and clos-
ing.
2 Push the leveling stake into the soil keeping it as
upright as possible. Leave at least 5 cm of clearance
between the soil and the bottom of the mounting
plate to prevent the sensor from being submerged in
heavy rain. If the soil is difficult to push the stake into,
you can drive the stake into the soil. Set a scrap piece
of wood into the opening between the arms and tap
the wood using a hammer or mallet. Be careful not to
bend the stake.
Attach the mounting plate to the leveling stake using
3
the three Phillips-head screws. Do not fully tighten
the screws at this point.
Mount the sensor in the fixture on the mounting plate
4
by placing the sensor into the fixture and tightening
the mounting screw against the sensor base.
Level the sensor by adjusting the three hex-head lev-
5
eling screws until the bubble is centered in the bubble
level.
6 Fully tighten the Phillips-head screws from step 3 to
lock the mounting plate in place.
7 Connect the sensor to any port on the chamber by
inserting the female sensor fitting into the male cham-
ber fitting. Thread the connector until snug. The fit-
tings are keyed, so be sure to align the key of the
sensor fitting with the slot on the chamber fitting. The
connection will not fit otherwise.

Configuring the sensor

LI-COR sensors require little configuration to work with the
LI-8250 Multiplexer.
To add a sensor to a LI-COR chamber block, first nav-
1
igate to Configuration in the LI-8250 Multiplexer user
interface. If you do not have an existing configuration,
see your LI-8250 Instruction manual
(licor.com/8250manual) for details on how to do this.
Installation Guide
1