Ludlum 19


Micro-R Survey Meter

Gamma-ray exposure rates. (0 – 5mR/hr)

Weekly Price: $75Monthly Price: $150


The Model 19 is a high sensitivity gamma uR/meter employing an internally housed 1″ diameter by 1″ thick NaI detector. 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 front panel controls include a rotary switch for selecting the 5 decade range and instrument shut off, an audio on/off switch, a fast/slow response switch, and push buttons for activating the meter lamp, count reset, high voltage display and battery test. An alarm light is mounted to the front panel and is accompanied by an audio signal. The Model 19 is a complete turn key system and includes two “D”cell batteries.


INDICATED USE: Low level (microR) gamma survey
DETECTOR: 1″ x 1″ NaI (Tl) scintillator
SENSITIVITY: Typically 175 cpm/mR/hr (137Cs gamma)
ENERGY RESPONSE: Energy dependent
SIZE: 8.5″ H x 3.5″ W x 8.5″ L (21.6 x 8.9 x 21.6 cm)
WEIGHT: 4.5 lbs (2.1 kg) including batteries
WORKING ENVIRONMENT: Splashproof shields for outdoor use
METER DIAL: 0 – 25 µR/hr 0 – 50 µR/hr BAT TEST
RANGE SELECTIONS: 0 – 25, 0 – 50, 0 – 250, 0 – 500, 0 – 5000
LIGHT: Push button to activate
RESPONSE: Toggle switch for FAST (4 seconds) or SLOW (22 seconds) from 10% to 90% of final reading
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