GS-512i Portable Gamma-Ray Spectrometer

GS-512i is a 512-channel gamma-ray spectrometer designed for field exploration of mineral deposits, gamma spectrometry, measuring of concentrations of naturally occurring isotopes K [%, nG / h], U [ppm, nG / h], Th [ppm, nG / h] and total activities in uranium equivalent concentration [ppm Ueq]. The GS-512i gamma spectrometer also allows users to set up to four ROI’s (Region Of Interest) to measure pulse counts in user-defined channels/energy ranges.

The GS-512i gamma-ray spectrometer allows inspection of stored spectra and data immediately after the end of the measurement in the field without the need for additional equipment. The measured and saved spectrum can be displayed with both linear and logarithmic y-axis for greater user comfort.

The GS-512i gamma-ray spectrometer has a built-on FLASH memory for storing up to 7,500 complete spectra. It is equipped with a pile-up rejector for the detection of double peaks, which enables a higher quality of the measured spectrum at high pulse rates. The GS-512i also performs spectrum stabilization, if enabled. The ¹³⁷Cs reference source is supplied with the instrument to stabilize the measured spectrum. However, it is possible to use another reference source that must be well distinguishable from other radiation sources in the measured spectrum, with its peak in the range of 40-500 channels. If measuring on-site with high uranium concentration, the ¹³³Ba radioisotope can be used as a reference source for a stabilization.

The GS-512i is powered by six LR6 AA batteries or rechargeable batteries. Rechargeable batteries with a charger are supplied. The external power supply can be used for mobile, laboratory, and stationary installations.

The GS-512i also allows, when measuring on a marked grid, automatic position increment for each measurement on a marked grid line. This simplifies the measurement; it is not necessary to set the position on the grid before each measurement. However, it is required to change the numberof the line by the operator when switching to a new line.

The GS-512i gamma-ray spectrometer enables communication with an external device using Bluetooth wireless technology. This allows the GS-512i to connect to an external GPS receiver, which can send the NMEA messages using the Bluetooth SPP protocol. If the GS-512i is connected to such a GPS receiver, the GPS location is saved with the measured spectrum. The GPS position can be used for further processing, for example, to create maps.

The GS-512i gamma-ray spectrometer can be remotely controlled with the SgDataGS PC application. The SgDataGS application allows the remote measurement and a configuration of the GS-512i. The communication between the GS-512i can be accomplished via USB or Bluetooth. The SgDataGS program is also used for data transfer, viewing, and sorting stored spectra. The measured values can also be exported to a text file for a further processing.

The GS-512i gamma-ray spectrometer is commonly sold with the 3-inch GSP-3 probe, which is best suited for field and general use. It is also possible to purchase 2-inch or 4-inch probes. The primary difference between these probes is the size of the scintillation crystal and their mechanical dimensions. You can find a comparison of the properties of the individual probes below in the Probes tab.

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