Triplett SPLT400 Solar Irradiance Meter

Features and Specifications

• Range: 1400W/m2
• Resolution: 1W/m2
• Accuracy: ±5 %
• Spectral Response: 320 to 1100nm
• Sampling Time: approx. 300ms
• Temperature: -22 to 212F (-30 to 100C) degrees
• Resolution: 0.2F/0.1C degrees
• Accuracy: ±2F/1C degrees
• Inclination: -90 to 90 degrees
• Resolution: 0.1 degree
• Accuracy: ±1.5 (32 to 122F/0 to 50C) degrees
• Compass: 0 to 360 degrees
• Resolution: 1 degree
• Accuracy: ±7
• Power: (4) AA batteries

Overview of the SPLT400 Meter

The Triplett SPLT400 Solar Irradiance Meter is an essential tool for optimizing solar panel installation by helping determine the ideal placement based on irradiance, temperature, tilt angle, and directional orientation for maximum efficiency. Beyond solar applications, it is also widely used in agriculture, meteorology, optical and physics labs, and in the production of high-performance windows for automotive and building industries. The meter measures irradiance in W/m² with a fast 300 ms sampling rate using a cosine-corrected silicon photodiode sensor. Additional features include tilt measurement from -90 to 90 degrees, a compass for directional readings, and switchable temperature units (F/C scale). It can display irradiance and temperature simultaneously or show tilt angle alongside compass direction, and its Data Hold function allows users to freeze readings for easy viewing.

Additional Facts

• Simultaneously display irradiance and temperature or tilt angle and compass
• Cosine corrected silicon photodiode sensor
• Compass azimuth function
• Low battery indicator

What's in the Box

• SPLT400 Irradiance Meter
• Sensor with 6.6ft (2m) sensor cable
• (4) AA batteries
• Carrying case
• Limited 2-year warranty