2
Three soil temperature thermistors can be measured by a single chamber sensor interface, but the temperature data will have to be linked to the correct
chamber in post processing. There will also be a time delay between the flux and temperature measurement equal to the observation length times the
number of ports between where the sensor interface box is connected and where the flask containing the thermistor is connected.
Appendix: A list of parts available from LI-COR used to construct a
multiplexed flask system
One per flask
1
(includes all items below)
One per flask
1
1
1
1
3
Two to four
Two per flask
Two per flask
One per flask
One per flask
Two per flask
One if modifying an LI-8150-16
Description
LI-8150 Multiplexer
LI-8100A Analyzer Control Unit
AC to DC Power supply
Chamber sensor interface
Soil temperature thermistor
Flask Sampling Kit
LI-COR Part number
LI-8150-16 or LI-8150-8
LI-8100A
8150-770-01
8150-661
8150-203
8150-670-16 or 8150-670-8
196-10534
210-01958-1
9981-173
9981-177
9881-204
140-04315
8150-250
300-07124
300-07125
300-07126
300-07127
167-07256
300-08118
300-07474
Two if modifying an LI-8150-8, or three if
modifying an LI-8150-16.
Two if modifying an LI-8150-8 and venting
the exhaust through one of the ports.
Three if modifying an LI-8150-8 and venting
the exhaust through one of the ports. Two
are included with the pump.
Two if using a port to supply ambient air
and vent exhaust.
One if not using a port to supply ambient air.
300-03367
300-03123
300-08151
Quick connect “Y”
Quick connect straight union
Quick connect plug
Filter
301-08119
One per flask or one for every three Soil
temperature thermistors
2
Quantity
1
1
1
Rubber grommet
Silicone grease
Diaphragm pump
Flask pump power cable
Pump mounting plate
#6-32 x 3/8" Hex cap screw
Bev-a-line tubing (15m)
Male quick connect
Female quick connect
Quick-conn couple bulkhead
Quick-conn plug bulkhead
Seal washer
Quick connect elbow (1/8 NPT)
Quick connect elbow
These items included with either Flask Sampling Kit
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