MicroR Ratemeter - Model 192
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Introduction

The Model 192 is a high-sensitivity gamma μR ratemeter employing an internally housed 5.1 cm diameter by 2.5 cm thick (2 x 1 in.) NaI(Tl) detector. This instrument supports two types of alarms: a user adjustable fixed point alarm and a deviation alarm that activates at levels above a floating background. An alarm light is mounted to the front panel and is accompanied by an audio signal.
                                 
The front-panel controls include a rotary switch for selecting one of four ranges, instrument shut-off and battery test, an audio on/off switch, a fast/slow response switch, and a reset button. The aluminum cast instrument housing with its separate battery compartment and accompanying metal handle offer an industrial robustness and quality that promote long-lasting protection and instrument life. The Model 192 is a complete turnkey system and includes two "D" cell batteries.

Alternate Instruments

Model 19: 2.5 x 2.5 cm (1 x 1 in.) NaI(Tl) detector, 0-5000 μR/hr range
Model 19A
: 2.5 x 2.5 cm (1 x 1 in.) NaI(Tl) detector, alarm capability, logarithmic scale 0–500 μR/hr
Model 193-6: highly sensitive plastic detector on end of extension pole
Model 3019: Digital Background Survey Meter