Digital Photometer

• Optical Power Meter

A versatile and economical classroom tool for measuring power levels of laser beams, demodulating optical signals for audio applications and solar experiments. Photometers are essential equipment in any principles-of-technology or in-school research program. The battery power, portability and adjustable height detector of this model offer particular flexibility. The photometer is powered by two standard 9-volt batteries and offers four digital measurement scales from 20 microwatts through 20 milliwatts. It demodulates optical signals up to 10 kHz and provides a DC analog output through standard banana jacks. (The analog output can be connected to a strip chart recorder for solar monitoring or to an oscilloscope for observing time-dependent optical signals.) The photometer also will act as an audio receiver to demodulate laser signals, which are also output to the industry-standard banana jacks.