AMETEK Thermox WDG-V Oxygen Analyzer
| Brand | PROCESS INSTRUMENTS |
|---|---|
| Origin | USA |
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | WDG-V |
| Pricing | Available Upon Request |
Overview
The AMETEK Thermox WDG-V Oxygen Analyzer is a high-reliability, in-situ paramagnetic oxygen measurement system engineered for continuous, real-time monitoring of O2 concentration in combustion flue gases and industrial process streams. Utilizing precision paramagnetic detection—based on the strong magnetic susceptibility of molecular oxygen—the WDG-V delivers stable, drift-free measurements without consumables or catalytic degradation. Designed for integration into boiler control loops, fired heater management, and safety-critical burner management systems (BMS), it supports both regulatory compliance and operational efficiency objectives across power generation, petrochemical, cement, and waste-to-energy facilities. Its robust mechanical architecture and NEMA 4X-rated enclosure ensure uninterrupted performance in harsh ambient conditions, including high-temperature ducts, vibration-prone installations, and corrosive gas environments.
Key Features
- Paramagnetic oxygen sensing technology with inherent selectivity for O2, eliminating cross-sensitivity to CO, CO2, NOx, hydrocarbons, and moisture
- Measurement range configurable from 0–10% O2 up to 0–25% O2 (vol%), optimized for combustion excess air control and safety interlock thresholds
- SIL 2 certification per IEC 61508 and IEC 61511, enabling direct integration into Safety Instrumented Systems (SIS) for burner trip logic and emergency shutdown sequences
- Integrated COe (equivalent carbon monoxide) calculation engine using stoichiometric algorithms and user-defined fuel composition parameters, supporting combustion efficiency diagnostics
- Self-diagnostics and predictive health monitoring—including sensor drift trend analysis, flow path integrity checks, and thermal stability verification—to enable condition-based maintenance planning
- Modular hot-tap probe design allowing installation and servicing without process shutdown; compatible with standard ANSI/ISA flange interfaces (e.g., 2″ NPT, DN50)
Sample Compatibility & Compliance
The WDG-V analyzer is validated for use with dry or saturated flue gases containing particulates ≤10 µm, total sulfur ≤500 ppmv, and HCl ≤50 ppmv. It meets EN 15267-3 (QAL1 certified for continuous emission monitoring systems), complies with EPA Method 3A for O2 determination, and satisfies ISO 14001 environmental management system requirements for emissions tracking. For pharmaceutical and food-grade applications, the system supports validation protocols aligned with ASTM D6299 (precision and bias of analyzers) and FDA 21 CFR Part 11 when deployed with compliant data acquisition software. All electrical interfaces conform to ATEX II 2G Ex d IIB T4 and IECEx standards for hazardous area classification.
Software & Data Management
The WDG-V communicates via HART 7, Modbus TCP/IP, and optional Profibus DP v1 protocols, enabling seamless integration with DCS, PLC, and SCADA platforms. The embedded web server provides secure remote access for configuration, calibration history review, and diagnostic logs. Audit-trail functionality records all parameter changes, calibration events, and alarm triggers with timestamp, operator ID, and IP address—fully traceable for GLP/GMP and ISO 9001 audits. Optional Thermox Insight™ software extends capabilities with real-time combustion efficiency dashboards, multi-point trending, automated report generation (PDF/CSV), and predictive failure alerts based on historical sensor performance models.
Applications
- Boiler and furnace excess air optimization to reduce NOx formation and improve thermal efficiency
- Combustion safety monitoring in refinery fired heaters, steam reformers, and thermal oxidizers
- Regulatory stack gas reporting for EPA Title V permits and EU Industrial Emissions Directive (IED) compliance
- Preventive maintenance scheduling for burners, air dampers, and fuel nozzles using long-term O2/COe correlation trends
- Startup/shutdown sequence verification in SIS-configured BMS architectures
- Process air-fuel ratio control in syngas production, lime kilns, and glass melting furnaces
FAQ
What measurement principle does the WDG-V employ?
It uses high-stability paramagnetic detection, leveraging the unique magnetic moment of diatomic oxygen molecules in a non-uniform magnetic field—providing absolute O2 quantification without zero drift or chemical consumption.
Can the WDG-V be used in explosive atmospheres?
Yes—it carries ATEX and IECEx certifications for Zone 1/21 gas and dust environments when installed with approved barriers or intrinsic safety interfaces.
Is field calibration required during routine operation?
No scheduled calibration is mandated due to paramagnetic sensor stability; however, periodic verification using certified span gas (e.g., NIST-traceable 8.0% O2 in N2) is recommended every 6–12 months per ISO 17025 guidelines.
Does the analyzer support COe output as a 4–20 mA signal?
Yes—configurable dual analog outputs allow independent transmission of O2 % and calculated COe ppm signals to separate control or safety systems.
How is data integrity ensured for regulatory reporting?
All measurement data, configuration changes, and calibration events are stored with cryptographic time stamps and immutable audit trails, satisfying requirements for EPA 40 CFR Part 60 PS-17 and EU MRV verification protocols.
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