Infrared spectrometer ProCeas®

near- and mid-infraredopticalfor gas analysis

Overview
The ProCeas® is a turnkey laser infrared multigas spectrometer designed for real-time trace-level analysis of gaseous contaminants across industrial and energy applications. Combining patented OFCEAS® (Optical Feedback Cavity Enhanced Absorption Spectroscopy) and LPS (Low Pressure Sampling), ProCeas® provides interference-free, high-accuracy quantification in complex gas matrices without sample heating or drying.

Technology
Optical Feedback Cavity Enhanced Absorption Spectroscopy (OFCEAS®) with Low Pressure Sampling (LPS) for direct, selective absorption measurements at trace levels.

Benefits

• Application-specific measurement — Multi-gas capability with configurable gas combinations for trace-level detection.
• Stable long-term performance — Online or intermittent operation without frequent re-calibration or sensor replacement.
• Lower operational complexity — Multi-point deployment possible; no zero gas or carrier gases required.
• Faster process response — Real-time detection enables rapid corrective actions to reduce downtime.
• Infrastructure protection — Early identification of contaminants helps prevent corrosion and damage to carbon beds, pipelines, turbines, etc.
• Cost savings — Reduced maintenance and extended asset life by preventing impurity-driven degradation.
• Consistent product quality — Ensures gas purity for critical processes in energy and industrial production.
• Environmental and safety support — Monitors purity to mitigate leak/explosion risks and improve CO2 injection efficiency in CCUS applications.

Compliance & Certifications

• Measurement compliance: Northern Lights specifications (latest edition); ISO 14687 (fuel cell hydrogen); ISO 19880 (hydrogen quality for distribution and refuelling); ISO 21087 (hydrogen analytical methods); ISO 2612:2023 (NH3 measurement for biomethane/natural gas); CO2 purity standards for food & beverage.
• Hazardous area certifications: Options include ATEX Zone 1 & 2, IECEx / UKEX Zone 1, Class I Division 1 (Groups B, C, D T6) and Ex p / Ex d configurations for LNG/RNG/biogas applications.

Applications

• CCUS: real-time monitoring of CO2 streams and detection of impurities (H2O, O2, SO2, NOx, H2S, CO, NH3, CH4, CH2O) to prevent impurity-driven corrosion and optimize injection.
• Hydrogen purity and production: detection of critical contaminants (HCl, H2O, H2S, HCOOH, CH2O, NH3) to meet ISO standards and protect downstream equipment.
• Fuel cell systems: monitoring H2 and air streams in PEM/SOFC to avoid catalyst poisoning.
• Ammonia cracking: analysis of NH3, H2O, N2, NOx in cracker outputs.
• NG / LNG: monitoring H2S, CO2, H2O for product quality and asset protection.
• RNG / biogas: continuous measurement of NH3, CH4, H2O, H2S, CO2, O2 for upgrading and purification.
• Chemical & petrochemical, chlorine and propylene plants, synthetic fuels / Power-to-X, fertilizer/urea production, cryogenic ASUs, pipeline monitoring, research & metrology labs.

Applicable gases (excerpt)
Diatomic: H2, O2
Nitrogen species: NH3, NO, N2O, NO2, HCN
Sulfur species: H2S, COS, CS2, SO2
Oxides: CO2, H2O, CO
Halides: HF, HBr, HCl
Aldehydes: CH2O
Hydrocarbons: CH4, C2H2, C2H4, C2H6
Acids: CH2O2 (example)
*Other ranges/compounds available on request.

Performances (excerpt)
Linearity: < 1% of reading, R2 > 0.999
Repeatability: 3 × LoD or ±0.5% relative
LoD: 3σ over 60 s (σ = standard deviation)
Zero drift: negligible

Technical data (excerpt)
Power supply: 110–230 VAC, 50–60 Hz
Power consumption: 150 VA max, 80 VA stabilized (per rack / wall-mounted configuration)
Ambient conditions: Rack: +10 … +35 °C; Wall-mounted: -10 … +60 °C; Humidity: 10–90% RH non-condensing
Instrument air (Ex p version): dust-free, oil-free, dry, 5–7 bar gauge, max 5.5 m³/h, ISO 8573 quality 1-2-1
Housing: stainless steel wall-mounted enclosure (800 × 600 × 250 mm); 19-inch 4U rack option
Protection rating: IP32 (rack), IP65 (wall-mounted), Ex d versions up to IP66
Interfaces: USB, Modbus TCP/IP, RS232, RS485 (RJ45), VGA, Ethernet remote access; optional analog I/O

Accessories (excerpt)

• Mandatory: probe (filter and sonic nozzle), sampling line, pumping system.
• Optional / additional: cabinet integration (ATEX II3G Ex pxb IIC T3 Gb), air conditioning, Ex p / Ex d configurations, vortex cooling, analog/digital I/Os, modem for remote connection.

Characteristics / technical specifications

• Model: ProCeas® (laser infrared OFCEAS® + LPS)
• Measurement principle: OFCEAS®
• Sampling: Low Pressure Sampling (no heating/drying)
• Linearity: <1% of reading (R2 > 0.999)
• Detection limit (LoD): 3σ over 60 s
• Power supply: 110–230 VAC, 50–60 Hz; consumption up to 150 VA
• Operating temperature: Rack +10 … +35 °C; Wall-mounted -10 … +60 °C
• Humidity: 10–90% RH non-condensing
• Housing: stainless steel wall-mounted (800 × 600 × 250 mm) or 19" 4U rack
• Protection rating: IP32 / IP65 / IP66 (Ex d)
• Interfaces: USB, Modbus TCP/IP, RS232, RS485 (RJ45), VGA, Ethernet; analog I/O optional
• Hazardous area options: ATEX Zone 1 & 2, IECEx / UKEX Zone 1; Ex p / Ex d variants