LI18 Hand-held read-out unit
The LI18 is a high accuracy hand-held
read-out unit that can be used with a variety of sensors. LI18's most common
application is with heat flux- and solar radiation sensors. It can be used both
for mobile measurements and as an amplifier directly connected to a PC. The LI18
has an RS-232 interface and software for readout via PC.
Free: For a nice clear print of the original product
brochure (PDF) click here.
Figure 1 LI18 connected to a solar radiation sensor or a heat flux plate.
(sensors are not part
of the delivery)
Other sensors can be connected as well; please
consult
Hukseflux.
The 9-pin RS232
connection is located on the bottom.
Using the buttons and software menu on
the LI18, the sensor type and the calibration factor of that sensor are entered.
The reading on the display now shows a calibrated value with the correct
engineering units. LI18 can be used to make mobile measurements, and also as an
accurate microvolt amplifier for use with a PC. The LI18 is battery powered but
also has a connection for a mains adapter that is typically used in indoor
applications. An adapter (100-230 VAC - 50/60 Hz) is included in the delivery.
The LI18 not only measures but also
integrates the input signal. The daily totals of the integrated value are
stored. Up to 31 days can be stored. The totals can be read from the display.
Delivered includes PC software. The
software has the following functions:
- display real-time values
- make a graph with selectable sample interval
- store data with selectable sample interval
- read-out and store integrated totals (24 hr totals or from one manual reset to
the next)
SUGGESTED USE
LI18 SPECIFICATIONS
-
Display
functions: actual or integrated values,set sensor type set calibration factor,
set internal clock, read-out stored totals, set integration method.
-
A/D
resolution: 1:10.000
-
A/D
sample rate: 10/second
-
linearity
error: 1 LSB max.
-
offset: 5 µV over -20 ... +40°C
-
temperature
coefficient: < 0.01%/°C
-
power
supply: standard 9V battery (PP3) or mains adapter 100-230 VAC
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