The new class of small (pocket-size) pager-style gamma and gamma-neutron spectroscopic personal radiation detectors combines the functionality of radiation detectors (detection and localization of radiation sources and primary radionuclide identification) and dosimeters (measurement of dose rate and count rate).

The distinctive feature of this class of devices is the autonomous primary radionuclide identification of radioactive sources that does not require a connection to a remote unit (PC/laptop/PDA, etc.), even in the presence of shields, containers or other forms of physical protection of radiation sources that have a weakening and scattering influence. Identification results appear on a bright, easily read color LCD display. The results show not only designations of identified radionuclides, but also classes to which they relate in accordance with the recommendations of the International Atomic Energy Agency (IAEA) - naturally occurring radiation materials (NORM), medical isotopes, industrial sources or special nuclear materials (SNM).

The instruments also have a built-in dictaphone to record comments to the measured spectra. All РМ1704 models have a USB interface for communication with a PC, laptop, PDA, etc. User software is automatically downloaded from the non-volatile memory of the device when it is connected.

РМ1704 instruments are available in three modifications:
- РМ1704 (basic model), with a built-in scintillation CsI(Tl) detector, which searches for gamma radiation sources, accumulates gamma-spectra and identifies radioactive sources.
- PM1704M additionally to the basic model has a built-in G-M tube, which expands the dose rate measurement range to 10 Sv/h (1000 R/h).
- PM1704GN additionally to the basic model has a scintillation Li6I(Eu) detector for the search and detection of neutron radiation sources.

	РМ1704	PM1704M	PM1704GN
Detector
gamma	CsI(Tl)	CsI(Tl) and G-M tube	CsI(Tl)
neutron			Li6I(Eu)
Sensitivity
for 137Сs, no less	100 cps/(µSv/h)	100 cps /(µSv/h)	100 cps /(µSv/h)
for 241Am, no less	250 cps/(µSv/h)	250 cps /(µSv/h)	250 cps /(µSv/h)
Energy range
gamma	0.033 - 3.0 MeV	0.033 - 3.0 MeV	0.033 - 3.0 MeV
neutron			From thermal to 14.0 MeV
Dose Rate
gamma	0.01 – 130 µSv/h (1 µR/h – 13 mR/h)	0.01 µSv/h – 13 Sv/h (1 µR/h – 1300 R/h)	0.01 – 130 µSv/h (1 µR/h – 13 mR/h)
neutron			0.01 - 999 s-1
Dose
Accuracy	± 30% (at 137Cs)	± 30%	± 30% (at 137Cs)
Response time	0.25 s	0.25 s	0.25 s
Radionuclide identification
Special nuclear materials (SNM)	meets most relevant parts of ANSI N42.48 (function available only upon customer request)	meets most relevant parts of ANSI N42.48 (function available only upon customer request)	meets most relevant parts of ANSI N42.48 (function available only upon customer request)
Medical radionuclides	meets most relevant parts of ANSI N42.48	meets most relevant parts of ANSI N42.48	meets most relevant parts of ANSI N42.48
Naturally occurring radioactive  materials (NORM)	meets most relevant parts of ANSI N42.48	meets most relevant parts of ANSI N42.48	meets most relevant parts of ANSI N42.48
Industrial radionuclides	meets most relevant parts of ANSI N42.48	meets most relevant parts of ANSI N42.48	meets most relevant parts of ANSI N42.48
Standards compliance	ITRAP (IAEA) requirements, ANSI N42.32 (most relevant parts), ANSI N42.33 (most relevant parts), ANSI N42.42	ITRAP (IAEA) requirements, ANSI N42.32 (most relevant parts), ANSI N42.33 (most relevant parts), ANSI N42.42, IEC 60846 (most relevant parts), IEC 62401 (most relevant parts)	ITRAP (IAEA) requirements, ANSI N42.32 (most relevant parts), ANSI N42.33 (most relevant parts), ANSI N42.42
Alarm type	Visual, audible, vibration	Visual, audible, vibration	Visual, audible, vibration
Data recording	Up to 100 spectra	Up to 100 spectra	Up to 100 spectra
Environmental protection	IP65	IP65	IP65
Drop test on concrete floor	1.5 m	1.5 m	1.5 m
Power supply	one AA standard or rechargeable battery	one AA standard or rechargeable battery	one AA standard or rechargeable battery
Battery life time	Up to 300 hours	Up to 300 hours	Up to 300 hours
Operating temperature	-20oС to 50oС (-4oF to 122oF)	-20°С to 50°С (-4°F to 122°F)	-20°С to 50°С (-4°F to 122°F)
Size (without holster)	130х60х46 mm (5 1/9’’x2 1/3’’x1 8/9’’)	130х60х46 mm (5 1/9’’x2 1/3’’x1 8/9’’)	130х60х46 mm (5 1/9’’x2 1/3’’x1 8/9’’)
Weight
(without holster)	250 g (8.8 oz)	280 g (9.9 oz)	260 g (9.2 oz)
(with holster)
Low battery warning	LCD	LCD	LCD
Overload indication
gamma	Visual and audial	Visual and audible	Visual and audible
neutron			Visual and audible
PC Communication	USB	USB