Solarmeter® is Solar Light Company Inc.'s brand of specialty hand-held light meters. We are the industry leader in the design and manufacture of UV and Visible Light radiometers for measuring lamp irradiance vs aging, as well as other related applications serving the indoor tanning industry, window film tint measurement, outdoor UV Index measurement, UV curing, reptile and sterilization lamp measurement, red/blue light phototherapy, LED measurement, and photovoltaic (PV) solar irradiance metrology. These meters provide long term accurate measurements for both low and high intensity lamp systems, in order to enable output and aging determination. They also measure solar irradiance.

Since 1991, well over 30,000 of these hand-held digital meters have been produced and sold worldwide.

Each Solarmeter® radiometer model comes complete with a carrying case and instruction brochure. Models 4.0 through 9.6 include a NIST-traceable Calibration Certificate, while Model 10.0 includes a WRR-traceable Calibration Certificate.

Generally, lamps need replacement when their output declines 30% (falls below 70% of their new values.) This may occur after anywhere from a few hundred to >1000 hours of use, depending on many various factors. The only way to know for sure is to monitor irradiance with a meter! 

The current Solarmeter® models are summarized here:

Model 4.0 UVA Meter - 0-199.9 mW/cm²
Model 4.2 UVA Meter - 0-1999 µW/cm²
Model 5.0 Total UV (A+B) Meter - 0-199.9 mW/cm²
Model 5.7 Total UV (A+B) Meter - 0-1999 µW/cm²
Model 6.0 UVB Meter - 0-19.99 mW/cm²
Model 6.2 UVB Meter - 0-1999 µWcm²
Model 6.4 Vitamin D3 Meter - IU per Minute
Model 6.5 UV Index Meter - 0.199.9 Irradiation Range
Model 7.0 UV Erythemally Effective (Eeff) Meter - 0-199.9 MED/hour
Model 7.5 UV Erythemally Effective (Eeff) Meter - 0-19.99 W/m²
Model 8.0 UVC Meter - 0-1999 µW/cm²
Model 9.2 Bilirubin Light Meter - 0-1999 µW/cm²
Model 9.4 Visible Blue Light Meter - 0-199.9 mW/cm²
Model 9.6 Visible Red Light Meter - 0-199.9 mW/cm²
Model 10.0 Global Solar Power Meter - 0-1999 W/m²

Please be sure to visit all the pages on this site to learn more about each specific model.

Solar Light Company, Inc. is recognized worldwide for over 50 years as America's premier manufacturer of precision ultraviolet light sources, solar simulators, and radiometers. Our standard line of UV, visible, and IR radiometers and light meters measure laboratory, industrial, environmental, and health related light levels with NIST traceable accuracy. Column ozone, aerosol, and water vapor thickness measurements, in addition to long-term global ultraviolet radiation studies all over the world are performed using our atmospheric line of instrumentation. Solar Light also provides NIST traceable spectroradiometric analyses, calibrations for light meters and light sources, OEM instrumentation and monitors, and accelerated ultraviolet radiation degradation testing of materials.

Solarmeter® is a registered trademark of Solar Light Company, Inc.

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