CUBIC INSTRUMENTS GasTDL-3110 Extractive Tunable Diode Laser Absorption Spectroscopy (TDLAS) Gas Analyzer
| Brand | CUBIC INSTRUMENTS |
|---|---|
| Origin | Hubei, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | GasTDL-3110 |
| Pricing | Upon Request |
Overview
The CUBIC INSTRUMENTS GasTDL-3110 is an industrial-grade extractive gas analyzer engineered for continuous, real-time monitoring of key process gases—including H₂S, O₂, CO, CO₂, and CH₄—in highly demanding environments characterized by elevated dust loading, moisture content, temperature fluctuations, corrosive constituents, and high gas velocities. At its core, the system implements Tunable Diode Laser Absorption Spectroscopy (TDLAS) in a robust through-beam (transmission-mode) optical configuration. This physics-based measurement principle exploits the unique near-infrared absorption fingerprints of target gas molecules, enabling highly selective, interference-free quantification without cross-sensitivity to background matrix gases—a critical advantage over conventional NDIR or electrochemical sensors. The system’s extractive architecture—comprising a heated, purged sampling probe, multi-stage gas conditioning unit, ruggedized control cabinet, and laser-based optical analysis module—ensures representative sample delivery while preserving spectral integrity and minimizing maintenance downtime.
Key Features
- Explosion-proof certification per IEC 60079-0/1/31: Ex d IIC T6 Gb and Ex tb IIIC T80°C Db—suitable for Zone 1/21 hazardous areas in petrochemical, coking, and syngas applications.
- Integrated probe with automatic purge-air blowback and heating control, preventing particulate accumulation and condensation-induced signal attenuation.
- Fully automated sequence operation: sample extraction, filter back-purging, condensate drainage, and zero/span validation—all programmable via embedded controller.
- Multi-stage particulate and moisture removal: stainless-steel sintered metal pre-filter, heated cyclonic separator, and Peltier-cooled membrane dryer ensure long-term stability under >10 g/m³ dust loads.
- Optical path design optimized for minimal alignment drift; laser wavelength modulation and harmonic detection provide immunity to optical window fouling and intensity fluctuations.
- Remote operation support via RS485 (Modbus RTU) and RS232 interfaces; compatible with DCS, SCADA, and MES platforms for integration into Industry 4.0 process automation frameworks.
Sample Compatibility & Compliance
The GasTDL-3110 is validated for use with hot, wet, and dirty process streams typical of blast furnace top gas, coke oven off-gas, biomass syngas, and waste incineration flue gas. Its sample conditioning architecture meets ISO 14644-1 Class 8 cleanroom-equivalent particulate retention and complies with ASTM D6216-22 requirements for extractive gas sampling system integrity. All wetted materials—including 316L stainless steel probe body, Hastelloy C-276 flow cells, and fluoropolymer-sealed valves—are selected for resistance to H₂S-induced sulfide stress cracking and chloride corrosion. The system supports GLP/GMP-aligned data integrity protocols when paired with optional audit-trail-enabled software modules compliant with FDA 21 CFR Part 11.
Software & Data Management
The embedded controller runs a deterministic real-time OS with dual-channel analog output (4–20 mA), three configurable relay outputs for alarm or interlock signaling, and non-volatile memory for ≥30 days of second-by-second concentration logs. Optional CUBIC Analytical Suite software provides PC-based configuration, spectral visualization, calibration history tracking, and CSV/Excel export. All measurement events—including auto-purge cycles, zero checks, and fault diagnostics—are time-stamped and stored with user-accessible metadata. Firmware updates are performed via secure USB or Ethernet, with rollback capability and SHA-256 signature verification to ensure firmware authenticity.
Applications
- Real-time O₂ and CO monitoring in blast furnace stoves to optimize combustion efficiency and reduce fuel consumption.
- H₂S and CH₄ quantification in biogas upgrading plants for feedstock quality control and safety interlock triggering.
- CO/CO₂ ratio tracking in coal gasification reactors to infer carbon conversion efficiency and detect slagging onset.
- Continuous emission monitoring (CEM) of regulated gases in compliance with local environmental regulations where extractive TDLAS satisfies EN 15267-3 performance criteria.
- Process safety systems requiring SIL-2 capable gas detection—leveraging dual-redundant measurement channels and self-diagnostics per IEC 61508.
FAQ
What gases can the GasTDL-3110 measure simultaneously?
It measures H₂S, O₂, CO, CO₂, and CH₄ in a single optical path; additional analytes require hardware reconfiguration or optional dual-laser modules.
Is calibration required on-site after installation?
Yes—initial field calibration using certified span gases traceable to NIST standards is mandatory; subsequent interval calibration follows ISO/IEC 17025 guidelines.
Can the system operate unattended for extended periods?
Yes—designed for >6 months mean time between maintenance (MTBM) under typical industrial conditions, with automated diagnostics and remote health monitoring.
Does it support integration with existing DCS systems?
Yes—RS485 Modbus RTU interface enables direct integration with major DCS vendors including Siemens Desigo, Honeywell Experion, and Yokogawa CENTUM VP.
What is the minimum detectable concentration for H₂S?
Detection limit is application-dependent but typically ≤1 ppmv at 1-s integration time, assuming standard 1.5 m optical path length and 10% H₂S in N₂ background.
