Water and food radioactive gamma spectroscopy analyzer

Types of radioactive nuclides in radioactive nuclear wastewater: Radioactive nuclear wastewater contains various radioactive substances, and the most harmful ones are mainly as follows: 3H tritium, 14C carbon, 131I iodine, 129I iodine, 134Cs cesium, 137Cs cesium, 60Co cobalt, 90Sr strontium, 89Sr strontium, 232th, 235U, 238U, 241Am

1、 Product Introduction:

Hnp- 600Water and food radioactive gamma spectroscopy analyzerThe low background lead chamber and CZT probe are used to measure the radioactivity of the sample to be tested. A high-performance digital spectrometer is used to measure the high-precision gamma spectrum of the NaI (Tl) probe. The energy spectrum is collected, stored, processed, and analyzed by the upper computer's energy spectrum measurement and analysis software. Finally, the identification of radioactive nuclides in the test sample and the measurement and analysis of specific radioactivity are achieved.

Gamma radioactive isotopes: 131I, 134Cs, 137Cs, 60Co, 129I

Compliant with testing standards:

GB/T 16145-2022 Method for gamma spectroscopy analysis of radioactive nuclides in environmental and biological samples

GB/T 16140-2018 Method for gamma spectroscopy analysis of radioactive nuclides in water

GB/T 11743-2013 Method for gamma spectroscopy analysis of radioactive nuclides in soil

GB/T 11713-2015 General Method for Gamma Spectroscopy Analysis of High Purity Germanium

GB14883.9 2016 National Food Safety Standard - Determination of Radioactive Iodine-131 in Food

GB 14883.10-2016 National Food Safety Standard - Determination of radioactive cesium-137 in food

Gamma ray spectroscopy measurement and spectral analysis software

Radioactive nuclide database

2、 Product application areas:

Measurement and analysis of gamma spectra in water and food;

Measurement and analysis of gamma spectra of building materials, soil, biological, geological samples, etc;

Analysis of radium (uranium), thorium, and potassium content in uranium geological samples;

Artificial nuclide analysis software such as uranium, cesium, cobalt, iodine, etc. can be equipped according to user requirements.

3、 Instrument system composition:

Low background lead chamber;

CZT Gamma Radiation Probe

High performance desktop digital spectrometer;

Gamma ray spectroscopy measurement and spectral analysis software.

4Hnp- 600Water and food radioactive gamma spectroscopy analyzerFeatures:

1. A low background digital spectrometer with real-time, fast, low-energy gamma ray stabilization technology, capable of rapid measurement upon startup and long-term stability; Traditional low background digital spectrometers require manual repeated adjustment of spectrometer parameters before they can work, and cannot work stably for a long time;

2. The digital spectrum stabilization function allows for the selection of digital spectrum stabilization methods such as background americium source gamma ray spectrum stabilization and natural characteristic peak spectrum stabilization;

3. Support the display of particle spectra, energy spectrum curves, trapezoidal shaped signals, and raw pulse signals;

4. The digital spectrometer has LIST-MODE mode, which can achieve real-time collection of particle event information (time, position, amplitude, etc.). Each channel of the digital spectrometer has clock synchronization function, with a synchronization accuracy of not less than 15ns. The particle event information can be transmitted to the computer to form spectra, thus meeting the requirements of fast mobile measurement;

5. Bispectral measurement: supports energy spectrum and time spectrum measurement;

6. High resolution: using a 16 bit 80MSPS high-speed and high-precision analog-to-digital converter;

7. High digital forming frequency: The digital forming frequency can reach up to 80MHz;

8. Multi channel input: 8 matching/anti matching inputs and 1 high-speed external clock synchronization input;

9. Full wave acquisition, no pulse leakage meter, with intelligent functions such as baseline correction and interference recognition. PMT output signal is direct, waveform distortion free, and the Cs peak can be measured with consistent resolution at any channel address within the measurement range;

10. Maximum data pass rate:>500kcp (1us forming time), high-speed transmission, no data leakage calculation;

11. Visual measurement display, with functions such as signal waveform, baseline online monitoring, and real-time analysis of measurement results;

12. Equipped with peak position monitoring function to ensure data collection quality;

13. The comprehensive analysis and resolution of characteristic spectral segments, full spectrum inspection, and multi spectral line comparison functions can be used for scientific research, teaching, and technical training.

5、 Main technical specifications of the instrument:

1. Detector: CZT crystal

2. Total number of tracks: 512, 1024, 2048, 4096, 8192, 16384, optional, standard number of tracks: 2048

3. Energy resolution:<1% (137Cs)

4. Instrument background: ≤ 4.5cps (50keV~3MeV)

5. Differential nonlinearity:<0.05%

6. Integral nonlinearity:<0.10%

7. Stability: Relative error ≤ 1.0% (24h)

8. Pulse resolution: 450ns

9. Instrument detection limit: 226Ra: 8.0 Bg/kg; 232Th：6.0 Bg/kg； 40K：20.0 Bg/kg

10. Maximum data pass rate: ≥ 500 kcps (1us forming time)

11. Measurement uncertainty (sample radioactivity>37Bq/kg):<10%

12. Power supply: 220V (± 10%) 50Hz

13. Temperature range:+5 ℃~+40 ℃

14. Relative humidity: ≤ 90%

15. Weight: 20kg