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Personal Alarm Dosimeter & Rate Meter “Arrow-Tech” Model Sentry

Alarming dosimeter and rate meter with data point tracking and optional software


The Radiation Alert® Sentry 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 built in memory for recording data points for tracking accumulated exposure.

The Sentry 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 and dose rate.


Use the audio switch to choose between audible clicks or a discreet silent mode that can be augmented

with the use of headphones.


The Xtreme boot offers maximum performance in a lightweight rugged solution for using

the Radiation Alert® Sentry in rugged conditions. The Xtreme boot is designed specifically

for individuals operating in tough environments, such as, Radiologists, 1st Responders,  Mining

and HAZMAT crews. Made of a RoHS compliant TPE rubber, the case also offers superior grip and

drop protection. The boot has a matte black finish identical to the enclosure of the instrument for

a seamless look, while giving the user complete access to the unit’s operation.




Uncompensated GM Tube

Switch Functions

§  Audible Clicks On/Off

§  Off

§  Vibrate and Audible Alert

§  Audible Only Alert

Operating Range

Dose Rate: .1-15 R/hr

Dose: .1-15 R/hr

Accumulated Dose: .1-65R

Dose Rate Linearity

Better than +/-15% up to 15 R

Energy Response

Down to 30 KeV

Gamma Sensitivity

1.5 cps/mR/hr referenced to Co-60

Audible Alarms

90db @ 1 ft.

§  Accumulated dose

§  Dose rate

Alarm Thresholds

Dose Alarm Default 500 mR

Rate Alarm Default .5 R/hr

Alarm and warning levels are user selectable with Optional Sentry Software


Headphone Connector, Internal Serial Header connector (cable comes w/Optional Sentry Software).

Power Requirements

9 Volt Battery. Typical battery life is 1500 hrs at background.

Temperature Range

-20°- +50°C (-4° - +122°F)


4.8 oz. with Battery (3.2 oz w/o battery)

8.3 oz. w/Xtreme Boot


3.8 x 2.4 x 1 in (96.5 x 70 x 25.4 mm)


Carrying Case


This product was added to our catalog on Tuesday 15 October, 2019.
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Nanomachinery Co., Ltd.
4, Soi Petchkasem 100 ,Phetchkasem Rd. ,Bangkaenue ,Bangkae ,Bangkok, 10160, THAILAND.
Tel : 086-322-6876 ,02-421-9927 ,Fax : 02-809-2591 E-mail : pongthorn@nano-machinery.com
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