MRU NOVAplus Portable Multi-Gas Flue Gas Analyzer
| Brand | MRU (Germany) |
|---|---|
| Origin | Germany |
| Model | NOVAplus |
| Instrument Type | Portable Flue Gas Analyzer |
| Measurement Accuracy | ≤ ±1% FS |
| Repeatability | ≤ 1% FS |
| Response Time | ≤ 10 s |
| Stability | ≤ 1% FS over 8 h |
| Measurable Parameters | O₂, CO, NO, NO₂, SO₂, CO (high range), CO (very high range), H₂S, CO₂ (NDIR), Total Hydrocarbons (HC), Flue Gas Temperature, Differential Temperature, Combustion Air Temperature |
| Sensor Configuration | Up to 6 electrochemical cells + 3 NDIR channels |
| Battery Life | 20 h (main unit), 30 h (RCU) |
| Wireless Range | 20 m (obstructed) / 100 m (line-of-sight) |
| Data Storage | 16,000 records |
| Display | 3.5″ backlit color LCD |
| Connectivity | SD card slot, mini-USB port, wireless RCU link |
| Optional Accessories | Peltier cooler, peristaltic condensate pump, 5-year O₂ sensor, integrated thermal printer, leak detection module, pitot tube/rotating vane anemometer interface, humidity & barometric pressure probe |
Overview
The MRU NOVAplus is a field-deployable, CE-certified portable flue gas analyzer engineered for precision combustion efficiency assessment, regulatory compliance verification, and continuous emission monitoring support across industrial, municipal, and commercial boiler installations. It operates on dual measurement principles: electrochemical detection for reactive gases (O₂, CO, NO, NO₂, SO₂, H₂S) and non-dispersive infrared (NDIR) spectroscopy for CO₂ and hydrocarbon species—ensuring trace-level sensitivity and long-term baseline stability. Designed in accordance with EN 50379-1/-2, EN 15267-3, and ISO 12039, the NOVAplus delivers metrologically traceable results suitable for periodic inspection reports under EU Directive 2010/75/EU (IED) and national air quality management frameworks. Its robust aluminum housing, IP54-rated ingress protection, and front-access modular design facilitate rapid deployment in confined or elevated stack environments without compromising operator safety or measurement integrity.
Key Features
- Modular multi-sensor architecture supporting up to nine simultaneous gas measurements: six electrochemical sensors (including optional 5-year lifespan O₂ cell) plus three NDIR channels (CO₂, COhigh, HC)
- Integrated high-capacity sampling system featuring a corrosion-resistant diaphragm pump (max. flow: 1.2 L/min), PTFE-coated star filter, and large-volume water separator—optionally enhanced with Peltier thermoelectric cooler and peristaltic condensate removal pump for extended unattended operation
- Dual-unit wireless control architecture: main analyzer unit communicates bidirectionally with the Remote Control Unit (RCU) via 2.4 GHz ISM band; RCU supports independent data acquisition from two K-type thermocouples, differential pressure transducers, rotating vane or pitot tube anemometers, humidity/barometric probes, and combustible gas leak detectors
- Extended runtime powered by field-replaceable lithium-ion batteries: 20 hours for analyzer, 30 hours for RCU; RCU supports contactless inductive charging when docked in its dedicated cradle on the analyzer housing
- Onboard thermal printer (optional), real-time data logging (16,000 records), and dual export paths—SD card and mini-USB—for post-processing in MRU’s certified software suite or third-party platforms compliant with ASTM D6522 and ISO 10849
- Comprehensive diagnostic suite including automatic zero/span validation, flow rate monitoring, system tightness test (optional), CO sensor auto-shutdown & purge cycle, and battery health reporting
Sample Compatibility & Compliance
The NOVAplus accommodates flue gas streams from diverse fuel types—including natural gas, LPG, light/heavy oil, biodiesel, coal, and biomass—without requiring hardware reconfiguration. Its gas inlet temperature tolerance spans −5 °C to +200 °C (with optional high-temp probe), while condensate handling capacity exceeds 500 mL/hour under saturated conditions. All sensor calibrations are NIST-traceable and documented per ISO/IEC 17025 requirements. The instrument meets electromagnetic compatibility standards per EN 61326-1 and carries ATEX II 2G Ex ib IIB T3 Gb certification for use in potentially explosive atmospheres (Zone 1). Data integrity conforms to FDA 21 CFR Part 11-compliant audit trail protocols when used with MRU’s validated software environment.
Software & Data Management
Data acquisition, visualization, and reporting are managed through MRU’s proprietary WinControl Pro software (Windows-based), which supports automated calibration certificate generation, trend analysis, combustion efficiency calculation (ηboiler, excess air ratio λ), and emission factor derivation per IPCC Tier 2 methodology. Raw ASCII/CSV exports enable integration with LIMS, SCADA, or ERP systems. Firmware updates are delivered via secure HTTPS channel and verified using SHA-256 checksums. All stored datasets include embedded timestamps, GPS coordinates (when connected to external GNSS module), sensor serial numbers, and environmental metadata (ambient T/P, humidity)—ensuring full chain-of-custody for regulatory submissions.
Applications
- Routine combustion optimization and energy auditing of residential, district heating, and industrial boilers
- Periodic stack testing for compliance with local air pollution control ordinances (e.g., U.S. EPA Method 7E, German BImSchV Annex V)
- Commissioning and troubleshooting of low-NOx burners, FGR systems, and SCR/SNCR denitrification units
- Field validation of continuous emissions monitoring systems (CEMS) per EN 14181 QAL2/QAL3 protocols
- Educational laboratory use for thermodynamics, environmental engineering, and process control curricula
- Emergency response screening for accidental CO or H₂S release in utility tunnels or enclosed combustion chambers
FAQ
What gas detection technologies does the NOVAplus employ?
It combines electrochemical sensing for O₂, CO, NO, NO₂, SO₂, and H₂S with NDIR spectroscopy for CO₂ and total hydrocarbons—providing orthogonal verification and minimizing cross-sensitivity artifacts.
Can the RCU operate independently of the main analyzer unit?
Yes—the COMFORT variant functions as a standalone environmental measurement station, accepting inputs from up to two thermocouples, differential pressure sensors, anemometers, humidity/barometric modules, and gas leak detectors—even when disconnected from the analyzer.
Is the NOVAplus suitable for measuring high-concentration CO in industrial furnaces?
Absolutely—the instrument offers two dedicated CO measurement ranges: standard (0–10,000 ppm) and extended (0–10% vol), both implemented via separate electrochemical cells optimized for linearity and recovery time.
How is data security and regulatory compliance ensured during field use?
All logged data includes immutable timestamps, user ID fields, sensor calibration history, and environmental context tags; firmware enforces password-protected configuration changes and maintains a tamper-evident audit log meeting GLP/GMP and ISO 17025 documentation requirements.
Does the NOVAplus support remote diagnostics or firmware updates in the field?
Yes—via encrypted Wi-Fi or USB connection, technicians can initiate remote health checks, download updated calibration coefficients, and apply security patches without returning the unit to service centers.
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