Ludlum Model 19uR

The Ludlum Model 19 Micro R survey meter is useful for low level gamma survey at the micro R level. The detector is an internal 1" X 1" sodium iodide (NaI)Tl scintillator. No external detector is required.

Splash proof shields are included for outdoor use. Sensitivity is typically 175 cpm/microR/hr based on 137Cs gamma. This meter over responds to scatter and low energy gamma which makes it more sensitive than any survey meter available.

Range selections include 0 - 25, 0 -50, 0 - 250, 0 - 500, 0 - 5000 microR/hr.

WORKING ENVIRONMENT: Splash proof shields for outdoor use INDICATED USE: Low level (microR) gamma survey DETECTOR: 1" X 1" sodium iodide (NaI)Tl scintillator SENSITIVITY: Typically 175 cpm/microR/hr (137Cs gamma ) ENERGY RESPONSE: Energy dependent METER DIAL: 0 - 25 microR/hr, 0 - 50 microR/hr, BAT TEST RANGE SELECTIONS : 0 - 25, 0 - 50, 0 - 250, 0 - 500, 0 - 5000 microR/hr LIGHT: Push-button to activate LINEARITY: Reading within plus or minus 10% of true value AUDIO: Built in unimorph speaker with ON/OFF switch (greater than 60 dB at 2 feet) CALIBRATION CONTROLS: Accessible from front of instrument (protective cover provided) RESPONSE: Toggle switch for FAST (4 seconds) or SLOW (22 seconds) from 10% to 90% of final reading RESET: Push-button to zero meter POWER: 2 each “D” cell batteries (housed in sealed compartment that is externally accessible) BATTERY LIFE: Typically 600 hours with alkaline batteries (battery condition can be checked on meter) METER: 2.5" (6.4cm) arc, 1 mA analog type CONSTRUCTION: Cast and drawn aluminum with beige polyurethane enamel paint TEMPERATURE RANGE: -4° F(-20° C) to 122° F(50° C) May be certified for operation from -40° F(-40° C) to 150°F(65° C) SIZE: 7.8"(19.8 cm)H X 3.5"(8.9 cm)W X 8.5"(21.6 cm)L WEIGHT : 4.5 lbs(2.1 kg) including batteries