Once the personal radiation detector PM1401GNA is turned on, it automatically starts taking measurements and storing the background radiation information. The instruments can detect even the slightest increase in radiation environment that causes the radiation levels to exceed the preset thresholds. The instruments' advanced processing algorithm enables the user to update the background levels and setup the alarm thresholds, thus adjusting to the specific radiation environments and satisfying the requirements for the false alarm rate.

 

The PM1401GNA is additionally designed to ensure adequate adaptation to the background level so that the instrument can locate a radioactive source even in the changing radiological environments. For example, the detector is able to detect radiation sources when the background decreases due to radiation shielding or when the background radiation intensity is high requiring the source to be located among high radiation level.

 

The PM1401GNA has a hermetic and shockproof case and the LCD screen's fluorescent backlight for easy operation even in the harshest, most unfavorable environments or weather conditions. The personal radiation detector is recommended for the use by first responders, security guards, police, customs officers and border patrol. No special experience or training is necessary to operate the instrument.

	PM1401GNA	PM1401GNB
Detector
gamma	CsI(Tl)	CsI(Tl)
neutron	He-3	He-3
Sensitivity
for 137Сs, no less	100 (s-1)/(μSv/h) (1.0 (s-1)/(μR/h))	100 (s-1)/(μSv/h) (1.0 (s-1)/(μR/h))
for 241Am, no less	200 (s-1)/(μSv/h) (2.0 (s-1)/(μR/h))	200 (s-1)/(μSv/h) (2.0 (s-1)/(μR/h))
Energy range
gamma	0.033 – 3.0 MeV	0.033 – 3.0 MeV
neutron	from thermal to 14.0 MeV	from thermal to 14.0 MeV
Dose Rate
gamma	0.01 – 99.99 μSv/h (1 – 9999 μR/h)	0.01 – 99.99 μSv/h (1 – 9999 μR/h)
neutron	1 - 999 s-1	1 - 999 s-1
Dose
Accuracy	±30% (in range 0.1 – 70 μSv/h (10 – 7000 μR/h) )	±30% (in range 0.1 – 70 μSv/h (10 – 7000 μR/h) )
Response time	0.25 s	0.25 s
Radionuclide identification using Bluetooth communication with external Pocket PC or smartphone
Special nuclear materials (SNM)		233U, 235U, 237Np, Pu
Medical radionuclides		18F, 67Ga, 51Cr, 75Se, 89Sr, 99Mo, 99mTc,103Pd, 111In, 123I, 131I,153Sm, 201Ti, 133Xe
Naturally occurring radioactive  materials (NORM)		40K, 226Ra, 232Th and daughters, 238U and daughters
Industrial radionuclides		57Co, 60Co, 133Ba, 137Cs, 192Ir, 226Ra, 241Am
Standards compliance	ITRAP/IAEA requirements, ANSI N42.32, ANSI N42.33 (1), IEC 62401	ITRAP/IAEA requirements, ANSI N42.32, ANSI N42.33 (1), ANSI N42.34, IEC 62401
Alarm type	visual, audio, vibration	visual, audio, vibration
Data recording	1000	1000
Environmental protection	IP65	IP65
Drop test on concrete floor	1.5 m (4.9 ft)	1.5 m (4.9 ft)
Power supply	one AA battery	one AA battery
Battery life time	up to 800 hours	up to 800 hours
Operating temperature	-30°C to 50°C (-22°F to 122°F)	-30°C to 50°C (-22°F to 122°F)
Size (without cover)	183 x 57 x 32 mm (7¼'' x 2¼'' x 1¼'')	194 x 57 x 32 mm (7 5/8'' x 2¼'' x 1¼'')
Weight
(without cover)	420 g (14.8 oz)	430 g (15.2 oz)
(with cover)
Low battery warning	LCD	LCD
Overload indication
gamma	OL	OL
neutron	999	999
PC Communication	IRDA	IRDA, Bluetooth