First, the main technical indicators
 
Detectors: Au-Si surface barrier detector or PIPS detector;
 
Detection object: radon and its daughters;
 
Alpha spectrometer: real-time display of alpha spectral lines.
 
Alpha-ray energy spectrum measurement: 256-channel analyzer;
 
Measurement method: pump absorption electrostatic collection energy spectrum analysis;
 
Background count: < 0.5 count/min;
 
Detection sensitivity: > 1-1/Bq.m3;
 
Lower detection limit: < 4Bq/m3;
 
Measurement range: 4-40000Bq. m3;;
 
Uncertainty of measurement: ≤ 5% (K=2);
 
Measurement time: < 5 minutes;
 
Three models of radon measurement: soil radon, air radon and water radon;
 
Storage function: automatically save 10000 spectral lines, which can be rechecked at any time;
 
LCD display: 320 × 240 row lattice;
 
Power supply: + 12V (rechargeable battery).
 
Main engine size: 30 × 26 × 15 cm;;
 
Second, the application field
 
1. Determination of radium and total α in drinking water and mineral water;
 
2. Detection of radon concentration in engineering foundation soil;
 
3. Quality inspection, construction, environmental geology and earthquake, etc.;
 
4. Measurement of radon concentration in public health environment;
 
5. Detection of radon concentration in indoor and outdoor ambient air;
 
6. Prediction and monitoring of earthquakes and geological disasters.
 
Third, the basic configuration
 
1. One main machine of KJD-2000R radon meter (including software);
 
2. One charger;
 
3. One set of soil radon gas extractor;
 
4. Add one drying cylinder;
 
5. 2 bottles of desiccant;
 
6. 2 silicone rubber tubes (each 1m long);
 
7. 1 manual;
 
8. One certificate of approval;
 
9. 5 rolls of printing paper.