LI19 Hand-held read-out unit / datalogger

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.
Hukseflux recommends 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.

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 10⁻⁶ 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

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

COMPATIBLE SENSORS: