EDC Haz-Scanner GB-2000 Indoor Air Quality Monitor

Overview

The EDC Haz-Scanner GB-2000 is a field-deployable, multi-parameter indoor air quality (IAQ) monitoring system engineered for real-time, quantitative assessment of environmental health and safety conditions in occupied buildings. Designed in accordance with core principles of occupational hygiene and building science, the instrument employs a modular sensor architecture to simultaneously acquire up to 14 critical IAQ parameters—including particulate matter (PM_1.0, PM_2.5, PM_4.0, PM₁₀), gaseous pollutants (CO, CO₂, NO, NO₂, SO₂, O₃, H₂S, NH₃, O₂), volatile organic compounds (VOCs) via photoionization detection (PID), ambient temperature and relative humidity, sound pressure level (dBA), illuminance (lux), wind velocity (m/s), electromagnetic field (EMF) intensity (V/m), and ionizing radiation (µSv/h). Its measurement methodology integrates standardized physical transduction techniques—NDIR for CO₂, electrochemical cells for toxic gases, 90° infrared light scattering for aerosol mass concentration, and calibrated thermistor/hygrometer elements for thermal-hygrometric profiling—ensuring traceable, repeatable data aligned with ASTM D6245, ISO 16000-22, and ASHRAE Standard 62.1 requirements.

Key Features

• Modular, hot-swappable sensor platform supporting simultaneous acquisition of up to 14 IAQ parameters
• Configurable particulate sampling: interchangeable impactors for PM_1.0, PM_2.5, PM_4.0 (respirable), and PM₁₀ fractions; optional 37 mm or 25 mm gravimetric filter cassettes for offline chemical/biological analysis
• Integrated 1–4 L/min programmable sampling pump with flow calibration traceability
• Real-time exposure metrics: Time-Weighted Average (TWA), Short-Term Exposure Limit (STEL), instantaneous Max/Min values per parameter
• User-definable audible and visual alarm thresholds compliant with OSHA PEL and ACGIH TLV guidelines
• Detachable handheld probe for remote spot-checking of hard-to-reach or spatially heterogeneous zones
• Onboard data logging: 36,000 records at user-selectable intervals (1 sec to 10 min); storage duration up to 21 days at 1-min resolution
• Optional long-range wireless telemetry (up to 1 mile line-of-sight) enabling unattended continuous monitoring in large facilities
• Rechargeable 12-V NiMH battery providing 8 hours of field operation; AC adapter support for benchtop or fixed-location deployment
• Compact form factor (17.8 × 10.2 × 28 cm / 7 × 4 × 11 in); net weight 2.7 kg (6 lbs)

Sample Compatibility & Compliance

The GB-2000 accommodates diverse sampling strategies required across regulatory and certification frameworks. Gravimetric filter sampling supports EPA TO-15, NIOSH 0500/0600, and ISO 7708 for mass-based particulate quantification. PID-based VOC measurements align with EPA Method 21 and ASTM D5197 for screening hydrocarbon and aromatic compounds. Electrochemical gas sensors meet IEC 61238-1 performance criteria for workplace gas detection. The system’s firmware and data handling architecture are designed to support audit-ready documentation for LEED v4.1 IEQ Credit 2 (Enhanced Indoor Air Quality Strategies), WELL Building Standard™ Feature 01 (Air Quality), and OSHA Respiratory Protection Standard 29 CFR 1910.134 compliance verification. While not certified as a medical device, its output is suitable for industrial hygiene surveys, post-remediation verification, and baseline IAQ characterization under GLP-aligned protocols.

Software & Data Management

The proprietary Haz-Scanner DataLink software (Windows/macOS compatible) provides secure, timestamped download of logged datasets with full metadata tagging (sensor ID, calibration date, operator ID, location coordinates). Export formats include CSV, PDF report templates (pre-formatted for LEED submittal), and XLSX for statistical analysis. All data files retain embedded audit trails showing configuration changes, alarm events, and calibration history—supporting FDA 21 CFR Part 11 readiness when deployed in regulated pharmaceutical or biotech environments. Firmware updates are delivered via encrypted USB or over-the-air (OTA) through the optional wireless module. Raw sensor outputs are stored without interpolation, preserving original resolution for retrospective reprocessing.

Applications

• Pre- and post-occupancy IAQ verification for LEED, BREEAM, and Green Globes certification
• Ongoing occupational health surveillance in schools, offices, healthcare facilities, and manufacturing plants
• Indoor mold and moisture investigation support via correlated RH, temperature, and VOC trends
• Respiratory hazard assessment during renovation, abatement, or HVAC commissioning
• Emergency response triage for chemical release incidents (e.g., H₂S leaks, CO accumulation)
• Academic research on ventilation efficacy, occupant thermal comfort, and pollutant source apportionment
• Regulatory inspection support for state/local environmental health departments conducting IEQ audits

FAQ

What standards does the GB-2000 comply with for particulate measurement?
The instrument adheres to ISO 7708:1995 definitions for respirable (PM_4.0) and inhalable (PM₁₀) fractions; its optical scattering algorithm is validated against gravimetric reference methods per ASTM D6245-19.
Can the system be used for continuous unattended monitoring?
Yes—when equipped with the optional wireless telemetry module and external power supply, it supports autonomous operation with remote data retrieval at configurable intervals.
Is calibration traceable to NIST standards?
All factory calibrations are performed using NIST-traceable reference gases (CO, NO₂, O₃, SO₂) and aerosol generators (PSL, DEHS); certificate of calibration is provided with each unit.
How is data integrity ensured during transfer and reporting?
DataLink software implements SHA-256 hashing for file integrity verification and maintains immutable logs of all export actions, meeting basic ALCOA+ (Attributable, Legible, Contemporaneous, Original, Accurate) principles.
Does the GB-2000 support integration with building management systems (BMS)?
Via optional Modbus RTU or BACnet MS/TP gateway modules, enabling real-time parameter streaming to third-party SCADA or EMS platforms.