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Handheld Survey Meters : Ludlum Model 79 - Carbon Fiber Stretch Scope

Ludlum Model 79 - Carbon Fiber Stretch Scope
FEATURES:
  • Light Weight—Approximately 1/3 the weight of comparable instruments
  • 45 in. to 177 in. Telescoping Carbon Fiber Pole
  • High-impact plastic with splash-resistant con-struction
  • 1 mR/hr—1000 R/hr
  • .1 mR/hr Display Resolution
  • Three modes of operation—RATE, MAX & Count
  • Backlit Auto-Ranging LCD with Adjustable Viewing Angle
  • Simple Green, Yellow & Red Status Indicators
  • 3-Button Intuitive Interface for Easy Operation
  • USB Port and All-Digital Calibration
  • Adjustable Shoulder Strap

SPECIFICATIONS:
  • DETECTOR: Geiger-Mueller (GM)
  • ENERGY RESPONSE: within 25% true value 60keV to 3MeV
  • LINEARITY: reading within 10% of true value
  • ALARMS: count rate, exposure/dose, and scaler alarm setpoints adjustable over the display range
  • OVERLOAD: high count rate saturation protection prevents false display of lower count rates
  • LOSS OF COUNT ALARM PROTECTION: after preselected time interval (default 60 seconds) of no pulses from detector, audible and visual alarms will be activated
  • LCD DISPLAY: 3 digit LCD with large 13.4 mm (0.53 in.) digits, (k)cps, (k)cpm, (k)Bq, (k)dpm, (µ)(m)R(/h), (µ)(m)Sv(/h), low-battery indicator, MAX, ALARM, MUTE
  • DISPLAY RANGE: 0.0 cps to 99.9 kcps; 0.00 cpm to 999 kcpm; 0.00 Bq to 99.9 kBq; 0.00 dpm to 999 kdpm; 0.00 µR/h to 999 R/h; 0.00 µSv/h to 999 Sv/h. Display range can be set to limit display to calibrated range
  • USER CONTROLS:
  • * ON/OFF/ACK - press to turn ON, tap to acknowledge alarms and silence alarm tone, press to reset Sigma Audio alarm, turn "click" audio On/Off, turn Sigma Audio beep On/Off, hold for OFF
  • * MODE - alternates between NORMAL (count rate), MAX (captures peak rate), and COUNT (user-selectable preset count time from 0 to 10 min.). Number of modes can be reduced in setup.
  • * UNITS - changes the units between primary or secondary units
  • BACKLIGHT: built-in ambient light sensor automati-cally activates low-power LED backlight, unless inter-nal dipswitch is set to continuous-On (will reduce bat-tery life). Alarm light intensity varies based on ambi-ent light levels.
  • RESPONSE TIME: user-selectable from 1 to 60 sec-onds, or Auto-Response Rate FAST or SLOW
  • AUDIO: greater than 75 dB at 2 ft, approx. 4 kHz
  • POWER: two alkaline or two rechargeable "AAA" batteries
  • BATTERY LIFE: approximately 100 hours of opera-tion, 24-hour low battery warning
  • CONSTRUCTION: display unit: high-impact plastic with separate battery compartment; telescoping pole: carbon fiber
  • TEMPERATURE RANGE: -20 to 50 ºC (-5 to 122 ºF), may be certified for operation from -40 to 65 ºC (-40 to 150 ºF)
  • SIZE: 20.3 x 8.1 x 114 cm retracted; 4.5 m fully ex-tended (8.0 x 3.2 x 45 in. retracted; 177 in. fully ex-tended) (H x W x L; extended L)
  • WEIGHT: 1.4 kg (3 lb), including batteries and shoulder strap
OPTIONS:
  • Stereo Audio Option: P/N 4498-697
  • Lumic Calibration Software Kit: P/N 4498-1020
  • Case: water, crush and dust proof case with custom foam pads to protect and transport instrument P/N 4272-598

 

Ludlum 79 Printable Info Sheet (PDF)