Digilert 100 Survey Meter

Digilert 100 Handheld Digital l Radiation Alert® Detector

Specifications

Detector:  Halogen-quenched GM tube with mica end window. Mica window density 1.5-2.0 mg/cm2. Effective window diameter is .360 inch. Side wall is .012 inch thick.

Display:  4-digit liquid crystal display with mode indicators. Display updates every 60 sec.

Count Light:  Red LED flashes with each count.

Audio Indicator:  Sounds with each count (can be switched off for silent operation).

Alert:  Pulsating beeper sounds the alert. Three separate adjustable alert levels are used for mR/hr, CPM, µSv/hr:, and Total.

Outputs:  Dual miniature jack sends counts to CMOS- compatible devices, including computers, data loggers, and educational data collection systems. Submini jack provides audio output to an external earpiece, amplifier, or tape recorder.

Operating Range:  

  mR/hr - .001 (1µR) to 100 mR/hr

  µSv/hr - .01 to 1000

  CPM - 0 to 350,000

  CPS - 0 to 5000

  Total/ Timer - 1 to 9,999,000 counts

Gamma Sensitivity:  1000 CPM/mR/hr referenced to Cs-1 37.

Accuracy:  ±10% typical (NIST), ±15% maximum.

Energy Sensitivity: 

  Detects alpha down to 2.5 MeV; typical detection efficiency at 3.6 MeV is greater than 80%. 

  Detects beta at 50 keV with typical 35% detection efficiency. 

  Detects beta at 150 keV with typical 75% detection efficiency. 

  Detects gamma and x-rays down to 10 keV typical through the window, 40 keV minimum through the case. Normal background is 5-20 CPM.

Power:  One 9-volt alkaline battery.

Battery Life:  Battery life is typically 2000 hours at normal background radiation levels. 

Temperature Range:  -10° to +50°C (14° to 122° F) 

Weight:  117 grams (6.5 oz.) without battery. 

Size:  150 x 80 x 30 mm (5.9 x 3.3 x 1.2 in.).