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Nuclear radiation measuring instrument scheme
  • I. Functional description of the nuclear radiation measuring instrument scheme:
    Detector: J302βγ Geiger counter tube
    Dose rate range: 0.1μSv/h to 10mSv/h
    Dose range: 0.00μSv~10Sv
    Sensitivity: >1cpsμSv/h (under the radiation source of Co60)
    Energy response: 48keV~1.5Mev
    Relative error: <10% (at 1 mSv/h)
    Power Supply: 3 AAA batteries, or Type-C power supply
    Power consumption: <150mW
    Operating environment: -20~50°C; humidity ≤95%RH, no condensation
    Nuclear radiation measuring instrument scheme
    II. J302βγ Geiger-Müller counter tube
    Outline dimensions (maximum)
    1. Diameter: 6.2mm
    2. Length: 56mm
    parameter
    1. Starting counting voltage: ≦350V
    2. Range of the flat area: 380-480V
    3. Slope within the plateau region: ≦15%/100V
    4. Operating temperature range: -40℃ to +55℃
    5. Discharge voltage: 550V
    6. Dead time: 20us
    7. Recommended operating voltage: 400V
    8. Lifespan ≥ 1010 pulse counts
    Terms of Use
    1. Counter tube load resistance: ≥ 2M
    2. Anode-to-ground distributed capacitance of the counter tube: 3pF


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