The Fluke IRR1-SOL Irradiance Meter is an all-in-one, handheld tool designed to simplify the critical measurements needed for installing, commissioning, and troubleshooting photovoltaic (PV) arrays. It measures solar irradiance, ambient and PV module temperature, array orientation, and tilt angles in a single device. With a rugged, compact design and a high-contrast LCD screen for easy reading in direct sunlight, the IRR1-SOL helps solar installers and technicians quickly meet the IEC 62446-1 requirements for testing and documenting PV system performance.

• Measurements: Measures solar irradiance (up to 1400 W/m²), ambient and PV module temperature, inclination angle, and cardinal direction (compass function).
• Temperature: Two options for temperature measurement—a built-in sensor and an external suction mount temperature probe (included).
• Angle/Direction: Integrated compass and inclination sensor for measuring and documenting panel tilt and site orientation.
• Standards: Designed to meet IEC 62446-1 requirements for PV system testing and documentation.
• Display: High-contrast LCD screen with large numbers for readability in direct sunlight.
• Durability: Rugged, compact design with IP40 protection.
• Power: Uses 4 AA alkaline batteries (included); typical battery life of 50 hours.
• Included: External temperature probe, carrying case with shoulder strap, and batteries.