FS-N-01 Nitrogen Oxides (NOₓ) Converter
| Origin | Imported |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Model | FS-N-01 |
| Pricing | Available Upon Request |
Overview
The FS-N-01 Nitrogen Oxides (NOₓ) Converter is an engineered catalytic conversion device designed for continuous emission monitoring systems (CEMS) and laboratory-grade gas analyzers requiring accurate quantification of nitrogen dioxide (NO₂) and total nitrogen oxides (NOₓ = NO + NO₂). It operates on the principle of thermal-catalytic reduction, converting NO₂ to nitric oxide (NO) at controlled elevated temperatures (180–230 °C) using a replaceable noble-metal-based catalyst. This enables downstream NO-specific analyzers—such as chemiluminescence detectors (CLD), non-dispersive infrared (NDIR) spectrometers, or electrochemical sensors—to measure NO₂ indirectly by detecting the converted NO signal. The converter is optimized for integration into regulatory-compliant CEMS installations where trace-level NOₓ speciation must meet ISO 11564, EN 14181, and EPA Method 7E requirements.
Key Features
- Replaceable catalytic conversion tube—enables field maintenance without full unit replacement, minimizing operational downtime and lifecycle cost
- Low-temperature catalytic operation (180–230 °C), reducing energy demand and thermal stress on internal components
- High conversion efficiency (>95% under standard conditions; >90% at 600 ppm NO₂), validated per ISO 11564 Annex B calibration protocols
- Precise PID temperature control with adjustable setpoint (factory preset at 220 °C ±2 °C) and real-time thermal monitoring
- Dual mounting options: 19″ rack-mount (483 × 132 × 303 mm) or wall-mount (362 × 300 × 123 mm) for flexible system integration
- Robust construction with PVDF sample gas fittings (OD 6 mm) ensuring chemical resistance to acidic and oxidizing flue gas constituents
- Integrated temperature alarm output (relay contact) for automated system interlock and fault logging
- Immunity to interference from O₂ and SO₂ within typical flue gas concentration ranges, eliminating need for upstream scrubbing in most coal-, oil-, or gas-fired applications
Sample Compatibility & Compliance
The FS-N-01 accommodates sample gas flow rates of 1–5 L/min at absolute pressures up to 2 bar, making it suitable for both extractive CEMS and portable stack testing configurations. Its catalytic core demonstrates stable performance across ambient operating temperatures of +10 °C to +50 °C and relative humidity <80% non-condensing. Catalyst lifetime exceeds three months under continuous operation at ≤600 ppm NO₂—consistent with ASTM D6522 and EN 15267-3 durability benchmarks. The unit complies with electromagnetic compatibility (EMC) requirements per IEC 61326-1 and carries CE marking for industrial use. While not intrinsically safe, its IP20 enclosure rating supports indoor installation in climate-controlled analyzer shelters meeting IEC 60529 environmental classification.
Software & Data Management
The FS-N-01 is a standalone hardware converter with no embedded firmware or digital interface. It interfaces seamlessly with third-party data acquisition systems via analog temperature monitoring output and discrete relay alarm signaling. When deployed in GLP/GMP or 21 CFR Part 11-regulated environments, its operational parameters—including setpoint, actual temperature, and alarm status—are logged externally by the host CEMS controller. Temperature calibration traceability is maintained through NIST-traceable thermocouple verification during annual preventive maintenance, supporting audit readiness for ISO/IEC 17025-accredited laboratories.
Applications
- Continuous emission monitoring of NOₓ in power plant flue gas, cement kilns, waste incinerators, and refinery heaters
- Calibration and validation of NOₓ analyzers per EPA Performance Specification 2 (PS-2) and EU Reference Method 13
- Research-grade NO₂ quantification in atmospheric chemistry studies and combustion diagnostics
- Mobile source testing (e.g., heavy-duty engine exhaust) per ISO 8178 and SAE J1930 protocols
- Process control in nitric acid production and selective catalytic reduction (SCR) system optimization
FAQ
What is the recommended calibration frequency for the FS-N-01?
Annual verification of temperature setpoint accuracy and conversion efficiency (using certified NO₂ span gas) is recommended per EN 14181 QAL2 requirements.
Can the FS-N-01 be used with wet gas streams?
No—it requires dried sample gas (dew point <5 °C) to prevent catalyst deactivation and condensate-induced channeling; integration with a permeation dryer or chiller is mandatory for high-humidity applications.
Is the catalyst tube certified to any international standard?
The catalyst formulation meets ISO 11564 Annex A specifications for NO₂-to-NO conversion media and is supplied with a certificate of conformance referencing EN 15267-3 material stability testing.
Does the unit support remote temperature adjustment?
No—temperature is set locally via front-panel potentiometer; remote setpoint control requires external PID integration via 4–20 mA or 0–10 V analog input (not natively supported).
What safety certifications does the FS-N-01 hold?
It conforms to IEC 61010-1 for electrical safety in measurement equipment and carries CE marking under the Low Voltage Directive (2014/35/EU) and EMC Directive (2014/30/EU).
