Lumasense Technologies Incorporation

High Reliability Handheld Signal Conditioner for Gallium Arsenide-Based Fiber Optic Temperature Sensors. Compact and rugged design with rubber boot casing protection High linearity and precision Superior total system accuracy (± 0.8 °C) Internal reference to guaranty reliability Traceable calibration Versatile and easy to use with large LCD display 50 Hz sampling rate ±5 V and RS-232 output interfaces
At the heart of the LumaTEST is the LumaSense Semiconductor Band Gap (SCBG) technology which provides accurate measurements using the temperature-dependent bandgap shift of a Gallium Arsenide (GaAs) crystal.

Now fi tted with an internal reference, the LumaTEST allows regular self verification and correction of its fully traceable calibration. The internal reference guarantees long term Total System Accuracy of 0.8°C in the most adverse conditions encountered in a transformer environment such as temperature variations, component aging, mechanical shocks and transformer vibrations.