1024-channel gamma-ray spectrometer for field exploration, borehole
logging and laboratory or simple scintillometer K, U, Th assay, dose
rate and search modes
Manual or continuous measurements with GPS BGO
Possibility of external probes for field
survey, wells, laboratories, alpha & beta radiation
Attachable collimator for logging of slim
Fast auto-stabilization using natural
radioactivity (without artificial gamma source)
Isotope library, stable calibration, self
Smart, lightweight (1.4 kg with batteries),
rugged and waterproof design (long submersion at 1 m)
Rechargeable Li-Ion cells (for 24 – 32 hours)
or 6 AA cells (12 V car battery, AC/DC adapter)
Easy control system (upgradeable via internet)
with graphical screen, acoustic pitch response and large memory
Data download via USB port or flash disk, data
Bluetooth communication with probe, GPS or
Applications: determination of K, U, Th
concentrations and natural gamma dose rate, spectral measurements with
identification of radiation sources for mineral and raw material
(uranium) prospecting, environmental monitoring, geological mapping,
laboratory assays, industrial and health care purposes.
Gamma Surveyor II represents super compact
1024-channel geophysical spectrometer for all kinds of radiation
measurements like field, borehole, carborne and submarine survey,
laboratory assays and industrial monitoring. Due to long experience in
gamma-ray analyzers and continuous scientific and technical development
(that allow keeping leading position) GF Instruments now offers unique
efficient technique of spectral evaluation with fast energy
stabilization working sensitively and reliably in wide range of natural
gamma dose rates. These main new features are completed with
traditionally effective, simple and transparent way of operation.
ABOVE: Gamma Surveyor console
fitted with basic probe
The Gamma Surveyor
is a new group of multi-channel gamma-ray spectrometers designed for
measurements of natural and artificial radioisotopes on the surface and in
boreholes and laboratories.
This group of
instruments covers a wide range of devices using various probes and types
spectrometer for field and borehole measurements
spectrometer with high volume detector
spectrometer with special detectors and features.
The control unit
works with all kinds of probes.
search for hidden
Thus Gamma Surveyor
represents a useful tool for radiation source identification, dose rate
and gamma-ray spectra measurements, determination of concentrations of
elements (especially K, eU, eTh) for environmental radiation monitoring,
geological mapping and studies, mineral and raw material prospecting,
laboratory assays, health care etc.
offers three basic measuring modes:
Search - quick and
selective search for gamma-ray sources (0.5 s response time)
Dose rate -
precise radiometric measurements
Spectra & Assay -
spectral measurements with determination of K, eU, eTh concentrations
The measuring system
supports point, profile and continuous measurements as well as the use of
external GPS data.
ABOVE: Larger crystal packs are available, as well as shallow borehole
Works with all
types of probes
Attached to the
small handheld probe forms a compact instrument
Can connect more
probes, GPS receiver, PC (USB)
Data memory: max.
32 MBit, max. 100 files
100 000 measured
points (dose rate continuous mode)
58 000 measured
points (dose rate)
1 800 measured
points (full spectra & assay)
display 320x240, white backlight
(mobile phone style), 19 keys
Power supply from
internal exchangeable battery pack (lithium-ion) or external power
supply 12V (6-14V, AC adapter and cable for car socket supply included
in standard accessories)
automatic intelligent battery charger activated by external 12 V source
upgrade via Internet
Dimensions: 256 x
90 (145) x 60 mm
Weight: 0.5 kg
or combined for surface and borehole measurements
512 channels, max.
250 000 pulses per second
100 keV to 3 MeV
Zero dead time
BGO, volumes 21.2 in3 (0.35 l) and 6.3 in3 (0.1 l)
To increase the
detection volume and thus achieve a more precise and faster measurement
it is possible to connect more probes to the control unit. It is not
necessary to recalibrate the probes for this purpose.
automatic stabilization of the peak position.
using built-in or external reference source 137Cs, possibly natural
All probes can
work in modes with internal, external reference source or using natural
The probes are
powered from the control unit (no charging of the probes).
data are stored in the probe and a user can create two more user defined
upgrade via Internet
Height of the
detector centre above the surface:
40 mm (handheld
66 mm (2"
79 mm (3"
90 x 120(90) x
290 mm, height with the handle 180 mm (handheld probe)
Ø70 x 420 mm (2"
Ø100 x 420 mm
(3" combined probe)
1.6 kg (handheld
2.8 kg (2"
5.3 kg (3"
Scintillation Gamma Radiameter
Fast and sensitive indication of gamma-ray sources
• uranium ore
• search for hidden
• industrial and
The SGR is a light,
ruggedized and easily operated instrument for field and industrial use.
This unit is equipped with a loud acoustic output (pitch response),
carrying belt and power supply from standard disposable or rechargeable
cells. The SGR is watertight and resistant to mechanical shocks. The SGR
does not sotre data or log GPS data, but is excellent when you simply want
to locate a radioactive source for later follow up / assay.
dia 51 x length 51 mm (6 cu in)
Sampling: 0.2 s,
0.5 s, 1.0 s, 2.0 s
10 nGy/h, to 100 µGy/h
Pulse rate: up to
sensitivity: from 50 keV
100, 200, 600, 2000 nGy/h or switched off
Alarm range: 300
to 6000 Hz (more than 80 dB at 3000 Hz)
Power supply: 3
pcs of C cells (single use or rechargeable) for 3 – 5 day’s work
indication: acoustic and displayed
Size & weight:
100x100x200 mm, 1.6 kg
temperature: -20 to +60 °C