Extech Instruments, a world leader in test and measurement tools, recently announced the launch of a new compact solar power meter that is making it easier for solar-related businesses to equip more estimators, installers and technicians with accurate solar power readings. The SP505 is an affordable, go-anywhere solar power meter (or handheld pyranometer) that is always within reach whether working on a roof, on a ladder, or in a client’s home.

Solar photovoltaic panel installers, solar window and solar water heating system installers now have an always-ready meter to assess installation sites for optimal placement of components, or to identify and diagnose issues on existing installations. Plus, residential and automotive window film tinting small businesses can show customers the quantitative difference in heating reduction with protective film or upgraded windows by using the affordable meter. The remarkably small size means it can be stored practically anywhere (4.3" tall and 1.9" wide (108x48mm)).

The new meter delivers readings in watts per square meter to 3999 W/m² and BTU per hour square foot to 634 BTU/h∙ft² with two ranges of 0.1 and 1 unit resolution. The solar sensor’s precision photo diode has a spectral response of 400 nm to 1100 nm and to ensure a compact design, the sensor is integrated in the meter instead of a separate unit, making it easier to stow in a pocket. Useful data functions include data hold, as well as a zero function to quickly reset the meter to zero. When detailed measurements are needed for extended periods, or at different angles, a tripod mount permits freestanding use (with the optional tripod, TR100).

The new meter is backed by a one-year warranty and comes with two AAA batteries and a storage pouch.