Applications include light levels in work places, labs, schools, environmental studies, biology, optics, and reflectance and translucence properties of materials. Compact and portable, can be used to monitor light levels anywhere, or to check the level of a particular light source. Use to check compliance with standards for emergency and exit lighting. Sper Scientific light meters are cosine and color corrected. Quick and accurate response. The selenium cell photosensor is hermetically sealed to ensure long term stability. Large 4-digit LCD. Also has a data hold switch to freeze results, external zero adjustment, tripod back and a recorder output. Comes with carrying case, photosensor cover, instructions, and a 9 volt battery. Dimensions of main unit: 8 x 2.75 x 1.25"". Photosensor: 5 x 2.5 x 1.5"". Lead 5' long. Warranty: 5 years.

592-200 series has a range of 0 to 20,000 Lux. Accuracy ±(5% + 4 digits).

592-230 series has a range of 0 to 2,000 Foot Candles. Accuracy ±(5% + 4 digits).

592-240 series provides dual Lux (0 to 400,000) and Foot Candle (0 to 40,000) ranges. Also has a RS232 output, max-min and auto power-off. Accuracy ±(3% + 0.5%fs).

*Includes a certificate with an individual serial number indicating instrument traceability to standards provided by NIST (National Institute of Standards and Technology).