HORIBA VA-3000/VS-3000 Series NDIR & CLA Multi-Gas Online Analyzer

Overview

The HORIBA VA-3000/VS-3000 Series is a modular, multi-component online gas analyzer engineered for high-precision, long-term stability in continuous emission monitoring (CEM), environmental air quality assessment, industrial process control, and R&D applications. Utilizing non-dispersive infrared (NDIR) spectroscopy for CO, CO₂, CH₄, N₂O, and SO₂; chemiluminescence analysis (CLA) for NOₓ; magnetic pressure (MPA), electrochemical (galvanic cell), and zirconia-based sensing for O₂ — the system delivers simultaneous, independent quantification of up to three gas components within a single compact 19-inch rack-mount chassis. Its core architecture reflects HORIBA’s decades of expertise in optical gas sensing, emphasizing measurement traceability, thermal and mechanical stability, and compliance with international performance standards including ISO 12039, EN 15267, and EPA Method 10/11/12. The analyzer operates on the principle of Beer-Lambert absorption (NDIR), photon emission yield (CLA), or paramagnetic susceptibility (MPA), enabling selective, interference-resistant detection even in complex matrix gases.

Key Features

• Modular sensor architecture: Up to three independently configurable sensor modules (NDIR, CLA, MPA, electrochemical, or zirconia) housed in a single VA-3000 analyzer unit — minimizing footprint and integration complexity.
• Wide dynamic range capability: Programmable multi-range scaling (up to 4 or 8 segments depending on technology); optional extended dynamic range (up to 20× full-scale ratio for NDIR, 100× for CLA) via hardware configuration or dual-sensor redundancy.
• High metrological integrity: Linearity ±1.0% FS (≤10× range), repeatability ±0.5% FS, zero drift ±2.0% FS/week (NDIR/CLA/MPA/zirconia), and span drift ±2.0% FS/week — validated across ambient to elevated concentration ranges.
• Fast response & low maintenance: T90 ≤ 30 s from sample inlet; warm-up time ≤ 20 min (NDIR/zirconia) to 60 min (CLA/electrochemical); no consumables required for NDIR or MPA modules.
• Ruggedized sampling interface: VS-3000 series sampling units (VS-3001 to VS-3004) provide conditioned, dry, particle-free sample flow (0.5 L/min nominal) with corrosion-resistant wetted materials (SUS316, PTFE, PVDF, FKM) and integrated bypass calibration ports.
• Standard digital & analog I/O: RS-232C serial interface for bidirectional command/control; isolated or non-isolated 0–1 V DC and 4–20 mA analog outputs; configurable alarm relays and status signals.

Sample Compatibility & Compliance

The VA-3000/VS-3000 system supports sample gas conditions compliant with ISO 14644-1 Class 8 cleanroom particulate limits (≤0.1 mg/m³ dust), dew point ≤5 °C (for NDIR) or ≤60 °C (for VS-series sampling), and pressure stability within ±980 Pa. It excludes corrosive (e.g., Cl₂, HCl >50 ppm, SO₃ >50 ppm), explosive, or highly reducing gas mixtures unless pre-conditioned — e.g., catalytic oxidation of CO/H₂ prior to N₂O measurement, or strict O₂/H₂O coexistence requirements for zirconia O₂ sensors. All configurations meet CE marking requirements and support audit-ready operation under GLP and ISO/IEC 17025 environments. Optional data logging and electronic signature modules enable alignment with FDA 21 CFR Part 11 for regulated pharmaceutical or bioprocess applications.

Software & Data Management

HORIBA’s proprietary PC-based software (VA-Link) provides real-time waveform visualization, multi-channel trend logging, automatic zero/span calibration scheduling, and customizable report generation (CSV, PDF, XML). Raw analog outputs and RS-232 telemetry support integration into SCADA, DCS, or LIMS platforms via Modbus RTU or custom ASCII protocols. Audit trails record all parameter changes, calibration events, and user logins with timestamps and operator IDs. Data retention is configurable up to 36 months at 1-second resolution, with encrypted local storage and optional cloud synchronization for remote diagnostics and predictive maintenance alerts.

Applications

• Continuous emissions monitoring (CEMS) for thermal power plants, incinerators, and cement kilns per EU Directive 2010/75/EU and US EPA 40 CFR Part 60.
• Urban and roadside air quality networks measuring ambient CO, NO₂, SO₂, CH₄, and CO₂ under WHO and EEA guidelines.
• Biogas upgrading and landfill gas analysis requiring simultaneous CH₄/CO₂/O₂ quantification with <1% FS uncertainty.
• Automotive exhaust R&D labs performing transient engine-out gas profiling with sub-second response fidelity.
• Controlled atmosphere storage facilities monitoring O₂, CO₂, and ethylene (C₂H₄) to optimize fruit and vegetable shelf life.
• Hydrogen production and fuel cell testing where precise O₂ impurity detection (<1 ppm) and CO poisoning risk mitigation are critical.

FAQ

What gas components can be measured simultaneously in one VA-3000 unit?
Up to three independent gas species — selected from CO, CO₂, NOₓ, SO₂, CH₄, N₂O, C₂H₄, and O₂ — using compatible sensor module combinations.
Is calibration gas required for daily operation?
Zero and span calibration is recommended at user-defined intervals (e.g., daily, weekly); automated calibration sequences are supported via built-in solenoid valves and external standard gas cylinders.
Can the system measure NH₃ or H₂S?
NH₃ and H₂S are not supported by standard NDIR or CLA modules; specialized electrochemical or tunable diode laser (TDLAS) options require consultation with HORIBA Application Engineering.
What is the maximum allowable sample moisture content?
For NDIR modules: ≤5 °C dew point; for VS-3000 sampling units: ≤60 °C dew point — achieved via integrated Peltier coolers and hydrophobic membrane filters.
Does the analyzer comply with EPA Performance Specification 15 (PS-15)?
Yes — when configured with certified CLA for NOₓ and NDIR for CO/CO₂/SO₂, and operated with PS-15-compliant sampling and calibration protocols.