Product Overview

The TFEX-8 explosion-proof zirconia oxygen analyzer is independently developed and manufactured by Anhui Tianfen Instrument Co., Ltd. Explosion-proof online oxygen analyzer Specifically designed for flammable and explosive industrial environments, it meets the Ex db IICT6 Gb/Ex tb IIICT 80℃ Db explosion-proof rating. It can be directly deployed in natural gas-fired furnaces, gas‑fired heat‑treatment furnaces, and hazardous‑area chemical processing applications, providing real-time, online monitoring of flue‑gas oxygen concentration. The device outputs a standard 4–20 mA signal for integration with DCS systems, offering explosion‑proof safety, high measurement accuracy, and long‑term operational stability. It is the preferred domestically produced instrument for oxygen‑content monitoring under hazardous operating conditions, capable of replacing imported explosion‑proof oxygen analyzers.

Product Detailed Description

TFEX-8 Explosion-proof Zirconia Oxygen Analyzer

Product model : TFEX-8 Explosion-proof rating : Exdb IICT 6 Gb / Ex tb IIICT 80℃ Db

Product Overview

The TFEX-8 explosion-proof zirconia oxygen analyzer is independently developed and manufactured by Anhui Tianfen Instrument Co., Ltd., specifically designed for industrial environments where flammable and explosive gases are present. Tailored for online monitoring of oxygen levels in flue gases in hazardous areas such as chemical plants, metallurgical gas-fired furnaces, explosion-proof heat‑treatment furnaces, and natural‑gas‑fired kilns, it features an intrinsically safe integrated design that meets stringent explosion‑proof standards. The instrument can be installed directly in explosive gas atmospheres without the need for an additional explosion‑proof enclosure.

This device leverages a mature zirconia‑based measurement principle to continuously acquire flue gas oxygen concentration and temperature data, with large‑screen LCD local display and touch‑sensitive controls for convenient operation. The instrument features a standard 4–20 mA current output, enabling seamless integration into DCS and PLC control systems and providing continuous, reliable oxygen‑level data to support combustion air‑fuel ratio regulation, energy conservation, and safe production. It is compatible with industrial furnaces fueled by natural gas, coal gas, and other combustibles, delivering stable performance under high‑temperature, dusty, and flammable/explosive process conditions, thus offering a domestically produced alternative to imported explosion‑proof zirconia analyzers.

Key Features

✅ High-standard explosion-proof design : Explosion-proof rating Ex db IICT6 Gb/Ex tb IIICT 80℃ Db, suitable for Class IIC explosive gas hazardous locations; the entire unit features an explosion-proof enclosure, complying with installation standards for hazardous areas in chemical plants, gas furnaces, and other applications.

✅ Zirconia measurement principle, fast response speed Oxygen content detection delivers rapid response and provides real-time feedback on the combustion conditions within the furnace, enabling precise adjustment of the air–fuel ratio, reducing fuel consumption, and minimizing oxidation‑induced burn‑off of workpieces.

✅ Large LCD display + touch-sensitive buttons : Glass‑touch sensor buttons, power‑off lid‑open safety alert, simultaneous display of oxygen concentration, flue gas temperature, output current, and equipment operating status—providing intuitive, on‑site monitoring.

✅ Standard signal output : 4–20 mA analog output, enabling direct integration with the central DCS system for remote data acquisition and interlock control; additionally supports RS‑485 digital signal output, with an optional HART protocol option.

✅ Strong resistance to harsh operating conditions : Designed to withstand high-temperature flue gas environments and equipped with a probe‑purging system, it effectively resists dust and moisture interference, reduces maintenance frequency, and ensures long‑term stable and reliable operation.

✅ Domestically produced and independently manufactured, with convenient after-sales service. : Supplied directly from the original manufacturer, Anhui Tianfen Instruments offers readily available spare parts and on‑site support from a domestic technical team, including site surveys, customized solutions, in‑house commissioning, and calibration & maintenance services. Procurement and operational costs are significantly lower than those of imported brands.

Typical application scenarios

• Natural gas annular heating furnace, explosion-proof heat treatment furnace, pusher furnace, roller kiln
• Oxygen monitoring of flue gases from chemical exhaust, gas-fired boilers, and explosion-proof areas in the petrochemical industry.
• Online oxygen measurement in applications involving flammable and explosive gases, such as lithium‑ion batteries and metallurgy.

Technical Specifications

1. Product Model: TFEX-8 Explosion-proof Zirconia Oxygen Analyzer
2. Measurement principle: Zirconia potential difference principle
3. Explosion-proof rating: Ex db IICT 6 Gb / Ex tb IIICT 80℃ Db (with dust explosion protection)
4. Display: Color LCD screen, touch-button operation
5. Signal output: 4–20 mA (RS485 and HART protocols available upon request)
6. Measurement range: 0–25% O₂ (range customizable upon request)
7. Power supply: 220 VAC (24 VDC option available)
8. Applicable flue gas temperature: 0–1600°C (high-temperature probes available upon request)

Service Description

Anhui Tianfen Instruments, a professional manufacturer of zirconia oxygen analyzers, can provide solutions tailored to customers’ on-site operating conditions. On-site survey, system design, turnkey system supply, on-site installation and commissioning, and regular calibration and maintenance. One-stop gas analysis solutions. We offer non‑standard customization and welcome both new and existing customers to call for inquiries or arrange on‑site visits. Our domestically produced explosion‑proof oxygen analyzers help enterprises achieve import substitution, ensuring safe production while reducing costs and conserving energy.

Anhui Tianfen Instrument Co., Ltd. —— Specializing in the manufacture of zirconia oxygen analyzers, trace oxygen analyzers, and explosion-proof gas analysis systems.