Nova 970P Portable Synthesis Gas Analyzer

Overview

The Nova 970P Portable Synthesis Gas Analyzer is an engineered solution for real-time, multi-component gas analysis in dynamic industrial and research environments. Designed and manufactured in Canada, the instrument employs a hybrid detection architecture: non-dispersive infrared (NDIR) spectroscopy for quantitative measurement of carbon monoxide (CO), carbon dioxide (CO₂), and methane (CH₄); electrochemical sensing for oxygen (O₂); and thermal conductivity detection (TCD) for hydrogen (H₂). This configuration ensures selective, interference-resistant quantification across complex synthesis gas matrices—such as those generated in biomass gasification, coal-derived syngas production, anaerobic digestion off-gas, and catalytic reforming processes. Unlike single-technology analyzers, the 970P integrates three independent optical and electrochemical sensing paths within a single compact chassis, enabling simultaneous, time-synchronized readings without cross-channel calibration drift. Its field-serviceable NDIR detectors feature replaceable optical filters and user-accessible cleaning ports—eliminating the need for factory recalibration after exposure to dusty or condensing sample streams.

Key Features

• Triple-channel NDIR detection with individually optimized optical paths for CO, CO₂, and CH₄—each with dedicated spectral bandpass filters and temperature-stabilized detectors (AC-powered variant only)
• Field-replaceable CH₄-specific hydrocarbon detector option, providing superior selectivity versus total hydrocarbons (THC) in mixed C₁–C₃ gas streams
• Long-life electrochemical O₂ sensor (rated >24 months in ambient air; extended life under low-O₂, high-CO conditions)
• Robust thermal conductivity cell for H₂, calibrated against certified reference standards traceable to NIST
• Fully integrated sampling system: diaphragm pump (max. 1.2 L/min), laminar-flow digital flowmeter (±2% reading), sintered stainless-steel particulate filter (5 µm), and PTFE-coated sample hose
• Chemically inert wetted path constructed from electropolished 316 stainless steel—validated for continuous exposure to H₂S, NH₃, HCl, and humidified syngas up to 80% RH
• Rechargeable Li-ion battery pack (12 h typical runtime at 1 L/min flow); optional AC power supply enables active detector temperature control (±0.1 °C stability) for enhanced long-term reproducibility

Sample Compatibility & Compliance

The 970P is validated for direct analysis of raw, unconditioned synthesis gases containing variable concentrations of CO (0–50%), CO₂ (0–50%), CH₄ (0–50%), H₂ (0–50%), and O₂ (0–50%). It accommodates sample dew points up to 40 °C and tolerates particulate loading ≤10 mg/m³. Internal moisture management relies on passive condensate trapping and hydrophobic membrane filtration—no external chillers or dryers required for most biogas and gasifier applications. The analyzer complies with IEC 61000-6-2 (immunity) and IEC 61000-6-4 (emissions), and meets ATEX Zone 2 / UL Class I, Division 2 requirements when operated with optional intrinsically safe barrier kits. Data integrity protocols support GLP/GMP-aligned workflows: all measurements include embedded timestamps, sensor health diagnostics, and configurable audit trails compatible with FDA 21 CFR Part 11-compliant data acquisition systems.

Software & Data Management

The embedded firmware supports dual-mode operation: standalone field use via backlit LCD interface (real-time ppm/% display, min/max/avg logging, alarm thresholds) and PC-connected operation via RS-232 or USB-to-serial bridge. Nova’s free SynGasLink™ desktop software provides live trend visualization, customizable report generation (PDF/CSV), and automated calibration certificate export per ISO/IEC 17025 guidelines. All analog outputs (4–20 mA, 0–1 V) are independently scalable per gas channel and isolated to prevent ground-loop interference. Firmware updates are performed via secure signed binary upload, preserving user calibration coefficients and historical logs.

Applications

• Real-time monitoring of biomass gasifier exit gas composition for process optimization and tar cracking efficiency assessment
• In-line verification of syngas stoichiometry (H₂:CO ratio) prior to Fischer–Tropsch or methanol synthesis reactors
• Biogas upgrading plant feedstock characterization and membrane separation performance validation
• Landfill gas quality control during flaring or engine fuel conditioning
• Lab-scale catalytic reaction screening where rapid H₂/CO/CO₂ turnover kinetics must be resolved
• Environmental compliance reporting for EPA Method 3A (O₂), Method 10 (CO), and ASTM D1946 (CH₄/H₂ in fuel gas)

FAQ

Can the 970P measure gases other than CO, CO₂, CH₄, H₂, and O₂?
No—the instrument’s hardware architecture is fixed to these five components. Additional gases (e.g., NOₓ, SO₂, H₂S) require separate analyzers or OEM integration.
Is zero/span calibration required before each use?
Field zeroing using certified N₂ is recommended before critical measurements; full span calibration is advised every 30 days or after exposure to gas concentrations exceeding 80% of full scale.
Does the unit support automatic moisture compensation?
No—moisture correction is not applied algorithmically. However, the stainless-steel wetted path and hydrophobic filtration minimize condensation-induced signal attenuation in typical syngas applications.
What is the warranty coverage?
Nova provides a 24-month limited warranty covering materials and workmanship, excluding consumables (filters, O₂ sensor, battery) and damage from improper sample conditioning.
Can the CH₄-specific detector be retrofitted to an existing 970P unit?
Yes—field upgrade kits (including detector module, firmware patch, and calibration certificate) are available directly from Nova authorized service centers.