A field gamma-ray spectrometer for rapid determination of potassium, uranium and thorium concentrations.
The detection and measurement of ionizing radiation mainly intended for geology, but can be used in many other fields. Typical use of the GT-30 includes; Searching for contaminated materials and radiation anomalies in the field, Determination of the K, U, Th content in the field and measurements of drill cores.

Technical Specifications • Detector: NaI(Tl) 2x2" or BGO 2x2", 103 ccm FWHM max. 7 % (BGO max. 11 %). • Sensitiity: 160 cps (BGO 210) / MBq Cs­137 / m 75 cps (BGO 75) / MBq Am­241 / m, 270 cps (BGO 400) / MBq Co­60 / m Gamma energy range: 30 ­ 3 000 keV. • Number of analyzator channels: 1024 • Display: graphic 128 x 64 dots, 28 x 60 mm automatic backlight. • Accoustic indication: 20 x per second, automatically set background level, freqency variation according to the radiation intensity. • PC connection: USB, Bluetooth. • Data evaluation: pulses per second (cps); % K, ppm U and Th, Gy/h of natural radionuclides. • Data recording: internal memory or PC. • Data memory: up to 288 hours of samples or 14,000 analyzes of K, U, Th or 1768 spectra, respectively their combination according to the memory allocation. • Power supply: 4 x AA, typically 8 hours of operation. • Dimensions: 260 x 81 x 96 mm. • Weight: 2.0 kg including batteries (GT­32: 2.4 kg). • Operating Temperature Range: 10 to 50 º C.