Personal Alarming Dosimeter / Ratemeter
Gamma Ray X- Ray exposure alert

  • Collects accumulated Exposure in memory
  • Settable Alarms
  • Selectable dose rate alarms
  • Set cal factor
  • Download accumulated exposure data
  • Tabulate in spreadsheet
  • USB Interface
  • Free software

The Radiation Alert® Sentry EC is a Personal Alarming Dosimeter / Ratemeter designed to ensure the safety of personnel that work in occupations with potential x-ray or gamma exposure.

The pocket sized unit has an energy compensated tube for a linear response to gamma and built in memory for recording data points for tracking accumulated exposure. The SentryCom Software option enables you to generate incident reconstruction for analysis. The software also permits you to easily set the vibrating and audio alert to your desired levels for dose (>1.0 mR/10 µSv) and dose rate (>1.0 mR/hr/10 µSv/hr).
Use the audio switch to choose between audible clicks with each count recieved or a discreet silent mode.

The Windows™ based SentryCom Software enables you to set the values for dose and dose rate alarms and warnings, set the Cal Factor, and the data logging frequency. It also allows the user to download the accumulated exposure data, which includes time and date stamp, exposure, and power cycle identifiers for analysis. The data is stored in a convenient delimited text file for use with a spreadsheet program.

Detector Energy Compensated Geiger Muller Tube
Dos Rate Linearity Better than ±15% up to 15 R
Energy Response Down to 20 kev
Operating Range: Dose Rate: 0.1 - 15 R/hr (1 µSv/hr - .15 Sv/hr)
Accumulated Dose: 0.1 - 65 R (1 µSv - .65 Sv)
Accuracy (Referenced to Cs137) Typically ±15% of reading (Cs137)
Gamma Sensitivity 1.5 cps/mR/hr (Co60)
Audible Alarms Accumulated Dose & Dose Rate, 90db @ 1 ft.
Alarm Thresholds Default: Dose 500 mR / Rate 50 mR/hr
Sievert Option: Dose 5000 μSv / Rate 500 μSv/hr Alarm and warning levels are user selectable with the Free SentryCom Software.
Switch Functions Power, Vibrate & Audible Alert, Silent Vibrating Only Alert, and Audio Clicks On/Off.
Outputs Mini USB
Power Requirements 9-Volt Alkaline Battery Approx. 1500 hrs at normal background.
Temperature Range -20ºC to 50ºC (-4ºF to 122ºF)
Housing Anodized Aluminum Housing w/ Metal Belt Clip
Size / Weight 106 x 67 x 28 mm (4.2 X 2.7 X 1.1 in) / 8.6 oz (243 g)


Ordering Information

SENTRY EC NIST Calibrated, includes battery, USB Cable, software $365.00