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LI19 Hand-held Datalogger

Updated:2025-03-13

Brand: Hukseflux
Model：LI19
Description: LI19 is a high accuracy handheld read-out unit / datalogger. It is used to make mobile measurements, for short term datalogging (as a static logger), and as an accurate millivolt amplifier directly co
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Product Details

LI19 Hand-held Datalogger： User's Manual Datasheet

LI19 May be Used with Pyranometers and Heat Flux Sensors

LI19 is typically used to display the measured solar radiation or heat flux. It measures a DC voltage. Once programmed with the sensitivity of the connected sensor, the display will show the actual value of the heat flux or solar radiation in W/m2. LI19 is programmed through its PC user interface. We recommend downloading the latest software. LI19 is battery powered, using 2 x AA-type batteries. Fresh batteries allow more than 50 days of operation. The system is supplied in a practical transport case, for easy transport and protection during field measurement campaigns. LI19 is built for easy use with a large size LCD, displaying quantities in W/m2, and a USB connection. LI19 may be used with pyranometers and heat flux sensors.

Suggested Use

Short-term field measurement of solar radiation or heat flux

Amplification of heat flux sensor signals

Education in solar energy

Areas of Application

Industrial monitoring and control / heat flux and heat transfer measurement

Solar energy / PV system performance monitoring

LI19 Hand-held Datalogger Specifications：

Output on display	Heat flux, solar radiation
Input	analogue voltage
Conversion	Division by the sensor sensitivity
Display definition	4 digits with sign
Display refreshment rate	1 s?1
Calibration uncertainty	0.1 %
Temperature dependence	< 0.5 % + 3 x 10?? V over rated range
Sample rate	2 s?1
Rated input range	6.25 to 200 x 10?3 V (selectable)
A/D conversion	16 bits
Stored measurement definition	minimum maximum and average over storage interval with conversion to W/m2
Storage capacity	3518 measurements
Storage interval range	2 to 65535 s (selectable)
Compatibility with Hukseflux sensor models	LP02, HFP01, SBG01, HF03
Battery type	2 x AA
Internal power supply voltage	3 VDC
Battery life	> 50 days (on fresh batteries)
Rated operating temperature range	-10 to +40 °C
System requirements for use with PC	Windows XP and higher
Connection to PC	USB 1.1 / 2.0 low speed
User interface on PC	LI19 software
IP protection class	IP40
Connection to sensor	2 x (female chassis plug for 4 mm banana with screwed signal wire clamp)
Weight	0.175 kg (net) / 1.3 kg with carrying case
Dimensions LI19	(70 x 146 x 25) mm
Dimensions transport case	(400 x 300 x 120) mm