NRF34 Personal Beta Dosimeter

NRF34 Dosimeter for Beta and Gamma

for Beta and Gamma Radiation 

Features alarm


The NRF34 Electronic Personal Dosimeter monitors / measures personal dose equivalent of beta and gamma radiation: dose and dose rate. The NRF34 features digital display and audible alarm. The user sets alarm threshholds for dose and dose rate by means of the NRZ software and reader. To operate this dosimeter, purchase of the NRZ IR Reader and Software is recommended. The same NRZ reader on software can be used on several dosimeters. Only one is needed per group.

Radiation Measured: Gamma (X) rays and Beta rays
Detector: Silicon semiconductor
Measurement Range: 1μSv to 9.999Sv
(0.1mrem to 999.9rem)
1μSv/h to 9.999Sv/h
(0.1mrem/h to 999.9rem/h) for dose measurement
Accuracy: Gamma(X) rays : ≤ ± 10%
(0.1mSv to 9.999Sv (10mrem to 999.9rem), 137Cs)
Beta rays: ≤ ± 15%
(0.1mSv to 9.999Sv (10mrem to 999.9rem), 90Sr/90Y)
Energy Range: Gamma(X) rays : 30keV to 6MeV
Beta rays : 0.2MeV to 0.8MeV (Mean energy)
Energy Response: Gamma(X) rays : ≤ ± 20%
(50keV to 6MeV, 137Cs reference)
Beta rays : ≤ ± 30%
(0.2MeV to 0.8MeV (Mean energy), 90Sr/90Y reference)
Angular Response:

Gamma rays :
≤ ± 20% (Up to ±60degree vertical and horizontal, 137Cs)
≤ ± 50% (Up to ±60degree vertical and horizontal, 241Am)
≤ ± 30% (All around horizontal, 137Cs, free air)
Beta rays :
≤ ± 30% (Up to ±60degree vertical and horizontal, 90Sr/90Y)

Dose Rate Linearity: Gamma(X) rays : ≤ ± 10%
(0.1mSv/h to 9.999Sv/h (10mrem/h to 999.9rem/h), 137Cs)
Beta rays : ≤ ± 20%
(0.1mSv/h to 9.999Sv/h (10mrem/h to 999.9rem/h), 90Sr/90Y
Display LCD: (with backlight)
Alarm Volume: 85 to 100dB (at 30cm)
Communication Method: Infrared communication
Operating Temperature: -20℃ to 50℃ (-4°F to 122°F)
Operating Humidity: 35% to 95%RH (Non-condensing)
Power Supply: Primary Battery (CR123A) x 1
Battery Life: 2880hours (without alarm/ communication)
Dimensions: 60(W) x 33(D) x 78(H)mm
(2.4(W) x 1.3(D) x 3.1(H) in)
Weight: 105g approx. (0.23lb approx.)

NRF34 Dosimeter (Order Online)

For data-logging and changing settings, the NRZ Reader and Software is required (Order Online)