Georadis Products
The NEW GT-32 MkII
The new world leading gamma-ray spectrometer for geological applications. A very highly sensitive unit providing Survey, Scan and natural nuclides Assaying. Equipped with BGO detector.
The GT-30/32 MkII is the second generation of the popular handheld gamma spectrometer GT-30/32. The strengths of the first generation were copied in the new model and improved.
The MkII learned from the limitations of the first generation and has of course been improved and developed. For example, it has a large color trans-reflective sunlight-readable display, an improved user interface with five control buttons and of course also improvements in terms of measurement technology.
GT-40
An Advanced Multipurpose Gamma-Ray Analyzer. The GT-40 can compute precise rock concentration of K (%), U (ppm) and Th (ppm). The GT-40 spectrometer is factory calibrated for precise measurements of Cs-137 and Cs-134 surface contamination. Equipped with an optional lead shielding, the GT-40 can also be used as a laboratory instrument.
SH 115/300
The SH115/300 is a small Gamma Ray shielding designed as a desktop accessory for Gamma Ray Spectrometers of series GT-40/GT-40S.
GT-32 MkII
GEOLOGICAL SPECTROMETER GT-32 MKII
The RS-232 BGO Spectrometer is the industry
standard in portable handheld gamma ray survey
devices for geophysical applications. It offers an
integrated design with a large detector, direct
Assay data, data storage, full weather protection,
ease of use and the highest sensitivity in the
market.
The RS-232 has greater sensitivity to terrestrial
radiation than previous generations. The
calibration & evaluation method utilizes the entire
spectrum, not only 3 ROIs, resulting in greater
sensitivity to geological gamma rays.
Bismuth Germanate Oxide (BGO)
The performance of the higher density 6.3 in3 (103
cm3) BGO crystal is approximately 80% of a 21in3
(345 cm3) Sodium Iodide (NaI) crystal, commonly
used with larger portable instruments. The BGO
crystal (2" x 2") is approximately three times more
sensitive than an NaI crystal of the same size.
Survey Mode
The total count readout is typically set at once per
second while the range is variable from 1 - 20 sec.
integration. When used with the internal GPS, data
can be stored and profiles produced. It is ideal for
both area and drill core scanning.
Assay Mode
The assay mode provides the concentrations of K, U
and Th. Sample times are user selectable and can be
between 30 and 1800 seconds. On-the-fly Assay is
available when automatically recording the data and
is at a minimum of 30 second intervals.
GT-40
MULTI-PURPOSE GAMMA-RAY ANALYZER
The new GT-40 series represents a major step forward in portable gamma-ray spectrometry for geological, geophysical and environmental surveying, prospecting and investigations. The compact unit with integrated GPS provides the user accurate and reliable results in real time.
The GT-40 with a 3” x 3” NaI(Tl) detector has high sensitivity and good resolution; it can be used for a variety of field applications.
The GT-40 S model with a 2” x 2” BGO detector and lead shielding should be used for focused measurement of cores or for stratigraphic measurements.
Using internal constants based on IAEA traceable calibration pads, the GT-40 can compute precise rock concentration of K (%), U and Th (ppm). Results are displayed immediately after end of measurements. They will be stored in the instrument and/or sent to appropriate external devices via Bluetooth or Wi-Fi.
A high sensitivity built-in GPS receiver can automatically record the geographical position and store it with each measurement. Measurements can be stamped with voice notes. Stored voice messages can be played back through the built in speaker. Survey data, including position, dose rate, total gamma and assay data can be collected point-by-point or automatically while walking or driving.
GT-40 and GT-40 S – versatile spectrometers for geophysical and environmental investigations
GT-40 S with lead shielding
SH 115/300
Laboratory unit,
accessory to the GT-40 and GT-40S
The purpose of the shielding is to minimize influence of local background radiation what increases sensitivity of gamma ray scintillometers or spectrometers. Real benefit is that low radioactive samples are measured in relatively short measuring times.
The main application for the shielding is laboratory gamma ray spectrometry. An average suppression of local background is minimum 1 to 10. Suitable for low activity determination in samples of various origins. Due easy assembly/disassembly the shielding is ready for mobile laboratories.
