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Low background α, β meter
Program-controlled high-voltage technology is adopted: the α threshold, β low threshold (β L), β high threshold (β H) and high voltage of the detector can be adjusted by computer according to requirements, with high degree of automation: the computer automatically controls the whole measurement process, automatically processes data, and can print results and original data. The innovative lead chamber structure design makes the distance between the coincidence detector and the main detector small and the anti-coincidence efficiency higher, the background is lower.
Classification:
Radiation environment monitoring
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Product Description
Main technical indicators
The 2πβ detection efficiency ratio of the instrument for 90Sr-90γ source is ≥ 55%, and the 2πα efficiency ratio for 239Pu source is ≥ 82%;
Beta background ≤ 0.15cm-2min-1, α background ≤ 0.002cm-2min-1;
α/β crossover performance: α→β<2%;β→α<0.5%;
Sensitivity: α = 5 × 10-4Bq, β = 0.5 × 10-3Bq;
Long-term stability
Efficiency stability: with continuous power for 24 hours, the detector efficiency change α is less than <3%,β<5%;
Background technical changes in the 32-hour measurement time are consistent with statistical laws.
The background stability: In the measurement time of 24 hours, the background count change should be within the range of (Nb ± 3o), where Nb is the average of the background count and o is the standard error of the local count.
Product Features
Using program-controlled high-voltage technology: the α threshold, β low threshold (βL), β high threshold (βH) and high voltage of the detector can be adjusted by computer according to requirements.
High degree of automation: the computer automatically controls the whole process of measurement, automatically processes data, and can print results and original data. The lead room has a novel structure. The innovative lead room structure design makes the distance between the coincidence detector and the main detector small, the anti-coincidence efficiency is higher, and the background is lower.
Innovative design of the whole cabinet: the equipment adopts the integrated design of the whole cabinet, which makes the measurement system difficult to integrate, occupies a small space and is easier to operate.
The use of special industrial-grade computers to ensure stable and reliable long-term continuous operation of the system.
Long-term stability and good repeatability of the instrument
Conditions of use
Ambient temperature:-35°C-55°C
Relative humidity: 95%
Power: AC 220V/50Hz power is not more than 20W
Weight
Weight: 450KG-700KG
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