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A highly-reliable model for gamma-ray measurements
The NRF series Electronic Personal Dosimeter (EPD) is a suitable for detecting and monitoring radiation in the restricted areas of nuclear power stations and other nuclear facilities. The NRF-30 measures gamma and X-ray. An audible alarm activates if the dose or dose rate exceeds a preset value. The dose value detected by the EPD is sent to a Computer system through a Reader, to allow you to effectively manage personnel safety. Dose, dose rate and operating-time alarm values can be preset with setting device. The EPD can be easily calibrated with Calibrator. The technically advanced dosimeters of the NRF series and their accessories can be combined to effectively protect your personnel from dangerous levels of radiation under a wide range of conditions. Autonomous functions are limited.

Radiation Measured Gamma (X) 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 ≤ ± 10 % (0.1mSv to 9.999Sv (10mrem to 999.9rem), 137Cs)
Energy Range 30keV to 6MeV
Energy Response ≤ ± 20% (50keV to 6MeV, 137Cs reference)
Angular Response ≤ ± 20%
(Up to ±60degree vertical and horizontal, 137Cs) ≤ ± 50% (Up to ±60degree vertical and horizontal, 241Am) ≤ ± 30% (All around horizontal,137Cs, free air)
Dose Rate Linearity ≤ ± 10% (0.1mSv/h to 9.999Sv/h
(10mrem/h to 999.9rem/h),137Cs)
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 100g approx. (0.22lb approx.)

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1. Electronic Personal Dosimeter (NRF30)

A highly-reliable model for gamma-ray measurements
The NRF series Electronic Personal Dosimeter (EPD) is a suitable for detecting and monitoring radiation in the restricted areas of nuclear power stations and other nuclear facilities. The NRF-30 measures gamma and X-ray. An audible alarm activates if the dose or dose rate exceeds a preset value. The dose value detected by the EPD is sent to a Computer system through a Reader, to allow you to effectively manage personnel safety. Dose, dose rate and operating-time alarm values can be preset with setting device. The EPD can be easily calibrated with Calibrator. The technically advanced dosimeters of the NRF series and their accessories can be combined to effectively protect your personnel from dangerous levels of radiation under a wide range of conditions. Autonomous functions are limited.


Radiation Measured Gamma (X) 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 ≤ ± 10 % (0.1mSv to 9.999Sv (10mrem to 999.9rem), 137Cs)
Energy Range 30keV to 6MeV
Energy Response ≤ ± 20% (50keV to 6MeV, 137Cs reference)
Angular Response ≤ ± 20%
(Up to ±60degree vertical and horizontal, 137Cs) ≤ ± 50% (Up to ±60degree vertical and horizontal, 241Am) ≤ ± 30% (All around horizontal,137Cs, free air)
Dose Rate Linearity ≤ ± 10% (0.1mSv/h to 9.999Sv/h
(10mrem/h to 999.9rem/h),137Cs)
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 100g approx. (0.22lb approx.)

2. Electronic Personal Dosimeter (NRF31)


Radiation Measured Gamma (X) rays and Neutron
Detector Silicon semiconductor
Measurement Range Gamma(X) rays : ≤ ± 10%
(0.1mSv to 9.999Sv (10mrem to 999.9rem),137Cs) Neutron : ≤ ± 15% (0.5mSv to 9.999Sv (50mrem to 999.9rem), 252Cf)
Accuracy Gamma(X) rays : ≤ ± 10% (0.1mSv to 9.999Sv (10mrem to 999.9rem),137Cs) Neutron : ≤ ± 15% (0.5mSv to 9.999Sv (50mrem to 999.9rem), 252Cf)
Energy Range Gamma(X) rays : 30keV to 6MeV Neutron : 0.025eV to 15MeV
Energy Response Gamma(X) rays : ≤ ± 20% (50keV to 6MeV, 137Cs reference) Neutron : ≤ ± 50% (250keV to 4.5MeV, 241Am-Be reference)
Angular Response Gamma(X) rays : ≤ ± 20% (Up to ±60degree vertical and horizontal, 137Cs) ≤ ± 50% (Up to ±60degree vertical and horizontal, 241Am) ≤ ± 30% (All around horizontal, 137Cs, free air) Neutron : ≤± 30% (Up to ±75degree vertical and horizontal, 241Am-Be)
Dose Rate Linearity Gamma(X) rays : ≤ ±10% (0.1mSv/h to 9.999Sv/h (10mrem/h to 999.9rem/h), 137Cs) Neutron : ≤ ± 20% (0.5mSv/h to 9.999Sv/h (50mrem/h to 999.9rem/h), 252Cf)
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 120g approx. (0.26lb approx.)

3. Electronic Personal Dosimeter (NRF34)


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.)

4. Electronic Personal Dosimeter (NRF40)


Radiation Measured Gamma (X) 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 ≤ ± 10% (0.1mSv to 9.999Sv (10mrem to 999.9rem), 137Cs)
Energy Range 30keV to 6MeV
Energy Response ≤ ± 20% (50keV to 6MeV, 137Cs reference)
Angular Response ≤ ± 20% (Up to ±60degree vertical and horizontal, 137Cs) ≤ ± 50% (Up to ±60degree vertical and horizontal, 241Am) ≤ ± 30% (All around horizontal,137Cs, free air)
Dose Rate Linearity ≤ ± 10% (0.1mSv/h to 9.999Sv/h (10mrem/h to 999.9rem/h),137Cs)
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 62(W) x 35(D) x 82(H)mm (2.4(W) x 1.4(D) x 3.2(H) in)
Weight 115g approx. (0.25lb approx.)

  • 2. Electronic Personal Dosimeter Related Equipment
  • 5. Dosimeter Reader (NMR)
    Features an easy-to-use large color LCD with touch screen and keyboard-less maintenance


    Function Screen size Dosimeter, ID card reader, alarm setting, operation guidance, data storage (1000 data records), maintenance operation 5.7" color LCD (touch screen operation) or 8.4" color LCD (optional)
    Communication method Ethernet (computer system) Digital I/O (Portal monitor, turnstile, etc.) RS485 / RS232C Infrared (Dosimeter)
    Size Approx. 200 (W) x 250 (H) x 105 (D) mm (5.7" LCD type) Approx. 250 (W) x 285 (H) x 115 (D) mm (8.4" LCD type)
    Mass Approx. 3.0kg (5.7" LCD type) Approx. 4.0kg (8.4" LCD type)
    Power 30keV to 6MeV
    Energy Response supply 24 V DC ± 10% (with spcified AC adapter)

    6. Dosimeter Calibrator (NRK)
    Easy and efficient automatic calibration for gamma-ray or beta-ray dosimeters


    Number of simultaneously calibrated dosimeter Gamma rays : 10units Beta rays : 1unit
    Processing capability Gamma rays : over 200units/h Beta rays : over 40units/h
    Sources Gamma rays : 137Cs 370MBq Beta rays : 90Sr/90Y 74MBq
    Dose irradiated Gamma rays : 30μSv or more Beta rays : 30mSv or more
    Power 30keV to 6MeV
    Leakage dose rate 20μSv/h (equipment surface) or less
    Size 430 (W) x 350 (H) x 430 (D) mm
    Mass Approx. 95kg

    Brief Introduction: S. P. Equipment and Services is serving Indian Industries with 'Special Plant, Equipment & Services' since 1997. We as partner with Global Leaders deliver World class solutions. We supply innovative Instruments & Systems, especially to Integrated Steel Plants. SPES is led by industry veterans, each having more than four decades of industrial experience. We are known for reliable services & long term support.