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!

Our Commitment To Our Customers

At Solar Light Company, LLC we are motivated and inspired every day by how our customers use our highly engineered products to find creative solutions to complex problems, develop breakthrough scientific advancements, and stay ahead of the technological curve. We run our business in much the same way. We maintain innovation as the focal point of our corporate mission, and strive to provide state of the art products and solutions that help our customers pioneer into the future.

Just as we constantly update and improve our products, we want to continually evolve our company to be in the best position to accelerate new technologies as they emerge, and to better serve our customers. Our experienced staff of engineers and physicists is readily accessible via phone, e-mail, or Skype whenever you need us. Our team is devoted to listening and collaborating with our customers to find solutions to almost any light science application.

Solarmeter - Model 4.2 - Sensitive UVA Meter Datasheet