Beifen Sanpu HD-2000 Intelligent Gamma Radiation Survey Meter

Overview

The Beifen Sanpu HD-2000 Intelligent Gamma Radiation Survey Meter is a portable, microprocessor-controlled radiation detection instrument engineered for rapid, non-destructive in-situ assessment of gamma-ray dose rate and integrated exposure in building materials and ambient environments. It operates on the principle of scintillation detection using a NaI(Tl) crystal coupled to a low-noise photomultiplier tube (PMT), providing high sensitivity to gamma photons across the energy range of 30 keV to 3 MeV. The instrument delivers real-time ambient dose equivalent rate H*(10) measurements in µSv/h, with automatic background subtraction, energy compensation, and temperature-stabilized signal processing to ensure metrological consistency under field conditions. Designed specifically for construction material screening, the HD-2000 meets the functional and performance requirements specified in GB/T 4835.1–2012 for portable environmental and workplace gamma radiation meters, including linearity, angular response, overload indication, and electromagnetic compatibility (EMC) per IEC 61000-4 series standards.

Key Features

• Integrated NaI(Tl) scintillation detector with 1.5″ × 1.5″ crystal volume for enhanced detection efficiency and low-energy response
• Real-time digital display of ambient dose equivalent rate (H*(10)) in µSv/h, with auto-ranging from 0.01 µSv/h to 10 mSv/h
• Onboard data logging (up to 2,000 records) with timestamp, GPS-tagged location (optional external module), and user-defined measurement intervals
• Intelligent alarm system with adjustable threshold levels (audible, visual, and vibration alerts) compliant with GB/T 4835.1–2012 alarm response time specifications
• Rugged IP54-rated enclosure with ergonomic handgrip, anti-slip rubber coating, and extended battery life (>100 h on AA alkaline cells)
• Calibration traceable to national primary standards via CNAS-accredited laboratories; factory calibration certificate included

Sample Compatibility & Compliance

The HD-2000 is optimized for direct surface measurement of flat or uniformly textured construction materials—including natural stone slabs, ceramic tiles, concrete aggregates, and gypsum boards—without sample preparation. Its directional response and energy compensation algorithm minimize angular and spectral dependence when evaluating heterogeneous surfaces. The instrument satisfies the metrological and operational criteria defined in GB/T 4835.1–2012 for portable gamma survey meters used in environmental and occupational settings. It is also suitable for supplementary use in radiological environmental impact assessments aligned with HJ/T 61–2001 (Technical Specification for Environmental Radioactivity Monitoring) and supports documentation required for building material radioactivity classification per GB 6566–2010 (Limits of Radioactivity in Building Materials). While not certified for nuclear regulatory applications requiring ANSI N42.33 or IEC 60846 compliance, it fulfills domestic statutory verification requirements under China’s Type Approval regime (PA Certificate No. 2011A182-11).

Software & Data Management

Data export is supported via USB-C interface and proprietary Windows-based PC software (HD-DataLink v3.2), enabling batch download, spectral trend analysis, georeferenced mapping, and report generation in PDF/CSV formats. The software enforces audit-trail functionality—including operator ID, calibration history, and parameter change logs—to support GLP-aligned quality assurance workflows. All stored measurements retain full metadata (date/time, instrument ID, battery status, alarm triggers), and raw count-rate data can be exported for secondary analysis. Firmware updates are delivered through secure signed packages, maintaining integrity per IEC 62443-3-3 guidelines for industrial control system cybersecurity.

Applications

• Rapid screening of granite, marble, slate, and porcelain tiles for Class A/B/C radioactivity categorization per GB 6566–2010
• Field verification during construction supervision and pre-handover indoor environment assessments
• Baseline surveys and periodic monitoring at quarry sites, aggregate processing plants, and recycled construction material facilities
• Supporting environmental impact assessments for infrastructure projects involving soil excavation or fill material reuse
• First-response radiological evaluation in post-renovation dwellings, schools, and public buildings where radon progeny accumulation may indicate elevated gamma-emitting nuclide concentrations (e.g., ⁴⁰K, ²²⁶Ra, ²³²Th)

FAQ

Is the HD-2000 suitable for measuring radon gas concentration?
No — the HD-2000 detects gamma photons only and does not measure alpha-emitting radon (²²²Rn) or its short-lived progeny directly. For radon assessment, dedicated alpha-track detectors or continuous radon monitors are required.
Does the instrument require annual recalibration?
Yes — per GB/T 4835.1–2012 Clause 7.3 and national metrological regulations, annual verification against traceable reference sources (e.g., ¹³⁷Cs, ⁶⁰Co) is mandatory for continued legal use in regulatory contexts.
Can the HD-2000 distinguish between natural and artificial radionuclides?
No — it provides total gamma dose rate without spectral resolution. Isotopic identification requires a gamma spectrometer equipped with HPGe or high-resolution NaI(Tl) detectors and multichannel analyzer software.
Is GPS positioning built-in?
No — GPS functionality is available only via optional external Bluetooth GNSS module; onboard location tagging relies on manual entry or paired smartphone integration.
What documentation is provided for quality assurance audits?
Each unit ships with a factory calibration certificate, GB/T 4835.1–2012 conformance statement, PA certificate copy, and electronic QA package including firmware version log, sensor serial traceability, and initial verification test report.