Ludlum Model 19

  MicroR Radiation Survey Meter

Features

• Low Level (microR) Gamma Radiation Survey

• Built In 1" X 1" NaI(Tl) Gamma Radiation Scintillator

• High Sensitivity to Gamma Radiation

• 0 - 5000 uR/hr Range

• Rugged

• Splashproof Protection for Outdoor Use

• Meter Light

Introduction

The Ludlum Model 19 is a high sensitivity gamma radiation 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.

Specifications

PART NUMBER: 48-1615

WORKING ENVIRONMENT: Splash proof shields for outdoor use
INDICATED USE: Low level (microR) gamma radiation survey
RADIATION DETECTOR: 1" X 1" sodium iodide (NaI)Tl scintillator
SENSITIVITY: Typically 175 cpm/microR/hr (¹³⁷Cs gamma )
ENERGY RESPONSE: Energy dependent
METER FACE:0 - 25 microR/hr, 0 - 50 microR/hr, BAT TEST (see picture below)
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

This Product is CE Certified

Meter Face

202-1070 0 - 50 mR/hr; 0 - 25 mR/hr

Options

• Check Source

• Source Holder

• Shoulder Strap

• Headset

• Carrying Cases

Replacement Parts

• Meter Bezel

• Meter Movement

• Handle

• Detector Assembly

Technical Information

• Model 19 Data Sheet

• Model 19 Manual

• Model 19 Energy Response Curve

• Model 19 ANSI Test Results

• Model 19 CE Certificate

Alternate Instruments

• Model 19A - 1" x 1" NaI detector, alarm capability, logarithmic scale 0 - 5000 uR/hr

• Model 192 - More sensitive 2" x 1" NaI detector

• Model 193-6  - Highly sensitive plastic detector on end of extension pole