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Ludlum M3, 44-2 Meter 3 NaI Gamma Scintillator - RENTAL

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420-0066

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$42.00
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Ludlum Model 3 is a portable radiation survey instrument with four linear ranges used in combination with exposure rate dials. The instrument features a regulated high-voltage power supply, unimorph speaker with audio ON/OFF capability, fast-slow meter response, meter reset button and 6-position switch for selecting battery check or scale multiples of X0.1, X1, X10 and X100. Each range multiplier has its own calibration potentiometer. The Ludlum Model 44-2 Sodium Iodide (Nal) Gamma Scintillator Detector is primarily used for detecting low levels of gamma radiation (uR) in the range of 60 keV to 1.25 MeV. It consists of a 1-inch diameter x 1-inch thick Nal crystal coupled to a photomultiplier tube and is housed in a 0.062-inch thick aluminum housing. This combination meter and detector ships with a cable, case, and calibration certificate. An operating manual is available upon request. Specifications:
  • Detector: 1"å diameter x 1"å thick NaI Gamma Scintillation
  • Meter Dial: 0 - 2 mR/hr, BAT TEST
  • Meter: 2.5" (6.4 cm) arc, 1 mA analog type
  • Meter Range: Typically 0-200 mR/hr
  • Linearity: Reading within 10% of true value with detector connected
  • Detector Sensitivity: Typically 175 ÌâåµR/hr
  • Connector: Series "C"
  • 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)
  • High Voltage: Adjustable from 400 "‰ÛÏ 1500 volts (M3); 500 "‰ÛÏ 1200 volts (D44-2)
  • Threshold: Fixed at 40 mV Ìâå± 10 mV
  • 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 (externally accessible)
  • Battery Life: Typically greater than 2000 hours with alkaline batteries
  • Tube: 1.7+/- 0.3 mg/cm2 mica; active "‰ÛÏ 15 cm2 & open "‰ÛÏ 12cm2
  • Dynode String Resistance: 5%-14C; 22%-90Sr/90Y; 19%-99Tc; 32%-32P; 15%-239Pu
  • Temperature Range: Typically 80 microseconds
  • Size: -4å¡F(-20å¡C) to 122å¡F(50å¡C)
  • Short Description - Ludlum M3, 44-2 Meter 3 NaI Gamma Scintillator - RENTAL