Operation and usage principle of Hengaode instrument radioactive aerosol sampler

It mainly involves the collection of aerosols, sample processing, radioactive detection, and data monitoring. The following explanation is based on relevant technical data.

Sampling principle

The equipment captures radioactive aerosol particles in the air through an air sampling system (such as a filter or centrifugal separation device), typically with a particle size range of0.01μmUp to tens of micrometers. The sampling process may use filter paper filtration or cyclone sampling techniques to enrich aerosol particles onto a collection medium (such as filter paper or virus inactivation solution) for subsequent analysis.‌

Automated operation process

Modern samplers often have fully automatic control functions:

‌Filter material management‌Including automatic membrane loading, cutting, block pressing, block extraction, and recycling of filter materials, reducing manual intervention.‌

‌operation mode‌Supports single measurement or cumulative mode. In single mode, the filter paper moves a fixed distance after each cycle of sampling (e.g6 cm）Replace it; In cumulative mode, the filter paper moves intermittently (e.g. every minute)1.25 mm）Realize long-term continuous sampling.‌

‌remote control‌Real time measurement data can be obtained through remote diagnosis, monitoring, and troubleshooting.‌

Detection and Data Processing

‌Radioactive detection‌After sampling, the instrument uses a detector (such asPIPSThe detector detects alpha or beta particles, amplifies and shapes the signal, and obtains energy information and counting data through a multi-channel analyzer.‌

‌Concentration calculation‌The system automatically calculates the activity concentration of artificial radioactive nuclides (unit:Bq/m³）And generate real-time curves. When processing data, it is necessary to synchronously record timestamps, environmental parameters, etc.‌

‌alarm function‌When the monitoring value exceeds the preset threshold (such as1×10³Bq/m³）If the instrument malfunctions (such as abnormal flow rate or exhaust of filter paper), it will trigger an audible and visual alarm and store records.‌

Key performance indicators

‌Monitoring sensitivity‌Under natural background conditions, the low threshold for alpha aerosols is ≤0.05 Bq/m³For β aerosols ≤1.00 Bq/m³.‌