α Spectrum Radon Gas Monitor

Application Fields

Measure radon concentration in ambient air, soil and water and radon exhalation rate in soil and building materials. It can be applied in geological prospecting, radiation protection, nuclear accident monitoring, radiation dose assessment, earthquake prediction and teaching, etc.

The instrument meets the measuring principle and requirements of GB 50325-2020 Standard for indoor environmental pollution control of civil building engineering,
GB/T 14582-93 Standard methods for radon measurement in environmental air, T/CECS 569-2019 Standard for measurement method of indoor air radon, and EJ/T 605-2018 Specification for radon and its progeny survey in uranium exploration.

Instrument Characteristics

* Detector: PIPS detector. Detector features include contact electrode thin, firm,wipeable and low noise.
Energy spectrum analysis of electrostatic collection of pumping gas.
* High α energy spectrum resolution, high sensitivity and real-time display of spectrum data.
* Fast measuring response and short recovery time.
* Constant flow sampling.
* Small size, light weight, suitable to carry.
* Low power consumption, AC/DC double use.
* With USB data transfer interface, equipped with a Bluetooth printer.

Specifications

1. Measuring Objects: Rn-222(Radon), Rn-220(Thoron)
2. Sensitivity: ≥ 0.017 cpm/[Bq·m-3] (0.63 cpm/[pCi/L])
3. Background count rate: ≤ 0.03 cpm
4. Detection Limit: ≤ 2 Bq/m3
5. Measuring Range
Radon in air: (2 – 999999) Bq/m3
Radon in soil: (300 – 999999) Bq/m3
Radon in water: (0.002 – 999.999) Bq/L
Radon exhalation rate: (0.001 – 33.000) Bq/[m2·s]
6. Measurement uncertainty: ≤ 20% (K=2)
(Radon chamber concentration ≥ 2000 Bq/m3,
Temperature is 25°C: ≤ 10%)
7. Stability: RE ≤ 10% (8h)
8. Operating Mode: Single point, continuous and scan
measuring
9. Data Storage: 10000 sets of measured results and energy
spectrum data
10. Way to Take Gas: Active pump-priming
11. Power Supply: Lithium-ion rechargeable battery/AC, DC
power can support the instrument to work continuously
for 72h.
12. Monitor: LCD display
13. Operating Environment
Temperature: (-10 – +50)°C
Relative Humidity: ≤ 90% (+40°C)