Cut Sheet

TECHNICAL DATA
Fluke IRR1-SOL
Solar Irradiance Meter
HIGH PRECISION MONO-CRYSTALLINE
SOLAR SENSOR
Instantaneous irradiance measurements up to
1400 W/m²
TWO OPTIONS FOR TEMPERATURE
MEASUREMENT
Use the built-in temperature sensor or the
external suction mount temperature probe to
measure ambient and panel temperature
INTEGRATED COMPASS
Measure and document roof or site
orientation
INCLINATION SENSOR
Know roof and PV panel tilt when surveying,
installing, or adjusting the installation
Make the critical measurements needed for
installing, testing, maintaining, and reporting on
solar panels or photovoltaic systems with one,
easy-to-use tool.
The Fluke IRR1-SOL Irradiance Meter has been designed from the
ground up to simplify the installation, commissioning, and trouble-
shooting of photovoltaic arrays, measuring irradiance, temperature,
inclination and direction of the solar array in a single handheld
tool. With a rugged, compact design, a protective carrying case,
and an easy-to-read, high-contrast LCD screen to read measure-
ments in direct sunlight, the IRR1-SOL can go where you go. The
simple user interface, instantaneous solar irradiation measure-
ments and built-in temperature sensor make it easy to meet the IEC
62446-1 requirements for testing, documenting, and maintaining
photovoltaic systems. Additionally, the integrated compass and
inclination sensor allow you to quickly measure and document roof
and site orientation, pitch, and panel tilt while surveying,
installing, or adjusting an installation.
Whether working on a roof-mounted system or on a large field
installation, the IRR1-SOL is the single-handed solution that every
solar installer and technician needs in their tool bag.
Use the IRR1-SOL for:
Photovoltaic system design and surveying
To find the expected production at a site, determine your solar
resource while taking shading into account. The solar resource is
measured in peak sun hours: the number of hours per day with
1,000 watts generated per square meter of solar array. Location,
time of day, season, and weather conditions all influence peak
sun hours. Use the Fluke IRR1-SOL to determine the actual solar
irradiance (Watts/m²) and shading at the site to develop
a baseline.
Measuring
Once your system is installed, make sure it is operating as
designed by measuring its electrical characteristics and the actual
power output of the array. The performance of a photovoltaic array
is based on its current-voltage (IV) curve. Use the IRR1-SOL to
obtain the amount of solar irradiance necessary to calculate the IV
curve of the power output.
Comparing and diagnosing
Even when installed correctly, a photovoltaic system may not be
producing the expected electrical output. In order to produce the
expected output the system needs to receive the correct amount
of irradiance energy to generate the DC voltage that is fed into the
inverter.