Fluke IRR2-BT Solar Irradiance Meter

From performing surveys and solar panel installation to executing the maintenance and performance of photovoltaic systems, the Fluke IRR2-BT Solar Irradiance Meter gives you the four critical measurements needed in one easy-to-use tool.


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Fluke IRR2-BT Solar Irradiance Meter

This solar irradiance meter is both accurate and user-friendly, making it ideal for essential measurements in the installation, testing, maintenance, and reporting of solar panels or photovoltaic systems. Furthermore, it seamlessly integrates wirelessly with the SMFT-1000 solar multifunction PV analyzer, enabling instant determination of the I-V curve for tested panels.

Durable and portable, this irradiance meter features a high-contrast LCD screen that is easily readable even in direct sunlight, making it convenient to carry wherever you go. Thanks to its straightforward user interface and incorporated temperature sensor, it effortlessly complies with the IEC 62446-1 standard for testing, documenting, and maintaining photovoltaic systems. The built-in compass and inclination sensor also enable swift measurement and documentation of roof and site orientation, pitch, and panel tilt during surveys, installations, or adjustments.

Fluke IRR2-BT Features

  • Make the critical measurements needed for installing, testing, maintaining, and reporting on solar panels or photovoltaic systems with one easy-to-use tool.
  • 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
  • Mounting solution: Ensure proper irradiance measurements with solar panel mounting

Fluke IRR2-BT Specifications

IrradianceMeasuring range: 50 to 1400 W/m2
Resolution: 1 W/m2
Measuring accuracy: ±(5% + 5 digits)
TemperatureMeasuring range: -22 to 212°F (-30°C to 100°C)
Resolution: 0.2°F (0.1°C)/1°F at >100°FMeasuring accuracy:
±2°F (±1°C) at 14 to 167°F (-10 to 75°C)
±4°F (±2°C) at -22 to 14°F (-30 to -10°C) and 167 to 212°F (75 to 100°C)
Note: Temperature measurement response time is approximately 30 seconds
Inclination AngleMeasuring range: -90 to 90°
Resolution: 0.1°Measuring accuracy:
±1.5° at -50 to 50°
±2.5° at -85 to -50° and 50 to 85°
±3.5° at -90 to -85° and 85 to 90°
CompassMeasuring range: 0 to 360°
Resolution: 1°
Measuring accuracy: ±7°
a) Measurements valid for device inclination between -20 and 20° to horizontal. Outside that range on LCD will be shown “—”
b) Result is referred to as magnetic north
TemperatureOperating temperature (meter): -4 to 122°F (-20 to 50°C); humidity: <80%, non-condensing
Operating temperature (probe): -22 to 212°F (-30 to 100°C)
Storage temperature: -22 to 140°F (-30 to 60°C); humidity: <80%
Altitude: 0 to maximum 6561.68′ (0 to maximum 2000 m)
Wireless Radio ModuleFrequency range: 2.402 to 2.48 GHz
Output power: 8 dBm
MemoryType: EEprom
Size (kB/records): 64 kB/6400
Recording time: 17 hours
RTC: Yes (super CAP supply)
Communication: BT: BL653 module (only with SMFT-1000)
Electromagnetic Compatibility (EMC)USA (FCC): 47 CFR 15 subpart B. This product is considered an exempt device per clause 15.103
Power SupplyType: 4 x AA alkaline batteries
Life (typical): 50 hours (≤9000 readings)
Auto power off: 30 minutes
Dimensions5.9 x 3.14 x 1.37″ (150 x 80 x 35 mm)
Weight0.5 lbs (231 g)
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Fluke Corporation Since its founding in 1948, Fluke has helped define and grow a unique technology market, providing testing and troubleshooting capabilities that have grown to mission critical status in manufacturing and service industries. Every new manufacturing plant, office, hospital, or facility built today represents another potential customer for Fluke products. From industrial electronic installation, maintenance and service, to precision measurement and quality control, Fluke tools help keep business and industry around the globe up and running. Typical customers and users include technicians, engineers, metrologists, medical-device manufacturers, and computer network professionals — people who stake their reputations on their tools, and use tools to help extend their personal power and abilities.