Oxygen Analyzer for Chemical Boiler Flue Gas Monitoring
Precise oxygen control is the cornerstone of efficient, low‑emission chemical‑boiler operation. Our oxygen analyzer for chemical boiler flue gas monitoring delivers real‑time, high‑accuracy readings that enable plant engineers to optimise fuel combustion, reduce NOx formation, and extend boiler life. Designed for harsh flue‑gas environments, the instrument combines rugged construction with advanced electro‑chemical sensing, making it the trusted choice for petro‑chemical, refinery, and specialty‑chemical facilities worldwide.
How It Works – Continuous Electro‑Chemical Sensing
The analyzer employs a patented dual‑cell electro‑chemical sensor that measures oxygen concentration directly from the flue‑gas stream. A built‑in temperature‑compensated reference circuit eliminates drift, while the integrated micro‑processor applies real‑time correction algorithms for pressure, humidity, and CO₂ interference. Data is output via 4‑20 mA, Modbus‑TCP, or PROFIBUS, allowing seamless integration with DCS, PLC, or standalone monitoring panels.
Key Benefits for Your Plant
- Optimised combustion efficiency – maintain oxygen levels within ±0.1 % vol for maximum fuel utilisation.
- Emission compliance – accurate control helps meet EPA, EU ETS, and local NOx limits.
- Reduced boiler wear – avoid excess air that accelerates tube oxidation and fouling.
- Fast response – 0‑5 s sensor lag ensures immediate feedback during load changes.
- Rugged reliability – IP66 housing, stainless‑steel inlet, and sensor life up to 3 years.
- Flexible integration – multiple communication protocols and configurable alarm set‑points.
Typical Specifications (customizable per order)
| Parameter | Range / Options | Typical Value |
|---|---|---|
| Measurement Range | 0 – 25 % vol O₂ | 0 – 21 % vol |
| Accuracy (±) | ±0.1 % vol (0‑10 % vol) / ±0.2 % vol (10‑25 % vol) | ±0.1 % vol |
| Response Time (t90) | ≤5 s | 3 s |
| Operating Temperature | ‑20 °C to +80 °C | 0 °C to 60 °C |
| Ingress Protection | IP66 (standard) | IP66 |
| Output Options | 4‑20 mA, Modbus‑TCP, PROFIBUS, HART | 4‑20 mA + Modbus‑TCP |
| Power Supply | 24 V DC (±10 %) | 24 V DC |
Industry Certifications & Safety
Our analyzer complies with IEC 60079‑0/1/2 for explosive atmospheres, ATEX 2014/34/EU Category 2, and holds ISO 9001 quality‑management certification. All internal wiring uses flame‑retardant, halogen‑free cables, and the enclosure meets NEMA‑4X standards for corrosion resistance in marine‑type flue‑gas streams. The device is also CE‑marked for electromagnetic compatibility (EMC) and conforms to RoHS directives.
Frequently Asked Questions
What is the minimum order quantity (MOQ) for a custom‑configured unit?
We accept orders from a single unit onward. For projects requiring specific communication protocols, housing materials, or sensor calibrations, a typical MOQ of 5 units ensures optimal pricing and lead‑time efficiency.
Can the analyzer be calibrated for other gases besides oxygen?
The core sensor is dedicated to O₂ detection, but the electronics can be licensed for simultaneous CO₂ or SO₂ compensation modules. Custom firmware options are available upon request.
What is the typical lead time from order to shipment?
Standard models ship within 15‑30 days after order confirmation. Fully customised solutions, including special housing or firmware, require 30‑45 days, depending on the complexity of the request.
What warranty and after‑sales support are provided?
All units come with a 24‑month limited warranty covering manufacturing defects. We also offer optional extended service contracts, on‑site calibration, and a 24/7 technical hotline for rapid troubleshooting.