Zirconia oxygen analyzer

Eby-OXY-8000F typeZirconia oxygen analyzerIt is a high-precision analysis equipment designed specifically for online monitoring of industrial high-temperature flue gas. Based on the principle of zirconia solid electrolyte oxygen concentration difference battery, it can achieve continuous, accurate and rapid detection of flue gas oxygen content. It is widely applicable to boiler, kiln, incinerator, CEMS environmental monitoring and other scenarios. It is a core instrument for combustion optimization, energy saving and consumption reduction, and environmental compliance.

1、 Core Principles and Structure 1 The working principle is based on zirconia ceramic as the core sensing element, which exhibits oxygen ion conductivity under constant temperature conditions of 700 ℃. When the measured flue gas and reference air form an oxygen concentration difference on both sides of zirconia, an oxygen concentration difference potential is generated. The potential signal is linearly converted into an oxygen content value through the Nernst formula to achieve real-time measurement. 2. Overall structure oxygen probe (primary instrument): Direct insertion design, core includes zirconia tube, platinum electrode, heating component, thermocouple and porous ceramic filter, can be directly inserted into the flue without complex sampling system, and has fast response speed. Oxygen transmitter (secondary instrument): responsible for signal processing, display, alarm and remote transmission, integrating PID temperature control, background correction, standard gas calibration and other functions, supporting multi protocol output. Installation accessories: Suitable for various specifications of flanges, optional with blowing device and extraction device, to meet the installation needs of different working conditions. 2、 Core technical parameters | Parameter categories | Specific indicators | | ---------- | | Measurement range | 0-20.6% O ₂ (expandable to 0-25% O ₂, supporting segmented range setting) | | System accuracy | ≤± 2% FS; transmitter accuracy 1.0 level (≤ 1.0% FS) | | Temperature control accuracy | Constant temperature point 700 ± 1 ℃ (optional 750 ℃) | | Response time | T90 ≤ 3 seconds, quickly capturing combustion state changes | | Output signal | 4-20mA (isolated output, load ≤ 750 Ω), RS485 communication, compatible with DCS/PLC systems | | Alarm function | Oxygen upper and lower limits, temperature upper and lower limits relay output (normally open/normally closed optional) | | Power requirements | AC 220V ± 15%, 50/60Hz; transmitter power consumption<6W, heating power about 50W (peak 150W) | | Environmental adaptability | Operating temperature -20 ℃~60 ℃, relative humidity<90%; Protection level IP65 | | Material and weight | Probe protection tube 304/316L stainless steel (corrosion-resistant); Detector weighs about 10Kg, transmitter weighs about 5kg | | Background correction | -20mV~+20mV, supports on-site one click calibration | III. Core function highlights 1 Accurate and stable: High precision temperature control and linearization algorithm ensure long-term measurement error is controlled within ± 2% FS, and 4-hour stability is ≤ ± 1% FS. 2. Fast response: T90 ≤ 3 seconds, can provide real-time feedback on combustion condition fluctuations, help dynamically adjust air-fuel ratio, and avoid excessive air or incomplete fuel combustion. 3. Intelligent calibration: Supports automatic background calibration and online calibration of standard gas. After replacing the probe or transmitter, the accuracy can be quickly restored, reducing maintenance costs. 4. Strong anti-interference: signal isolation design, suitable for complex industrial electromagnetic environments; Fully enclosed structure, resistant to high dust and corrosion, suitable for harsh working conditions such as high sulfur flue gas. 5. Convenient integration: Standard 4-20mA and RS485 dual output, can be directly connected to DCS/PLC system, realizing remote monitoring and automation control. 6. Flexible adaptation: The probe length can be selected from 400 to 1200mm, supporting vertical/inclined installation and adapting to different diameters of flue and furnace depths. 4、 Typical application scenario 1 Power industry: Combustion optimization of coal-fired/gas-fired power plant boilers, dynamic adjustment of air flow rate, reduction of exhaust heat loss, improvement of thermal efficiency by 5% to 15%, while reducing emissions of pollutants such as NOx and SOx. 2. Industrial furnaces: Oxygen content monitoring in scenarios such as steel metallurgy heating furnaces, building materials cement kilns, chemical incinerators, etc., to ensure stable process atmosphere and prevent material oxidation and burning. 3. Environmental monitoring: The core equipment of CEMS flue gas continuous emission monitoring system ensures that the oxygen content of flue gas meets environmental standards and provides data support for pollutant discharge accounting. 4. In the field of new energy: atmosphere control for sintering furnaces for lithium positive and negative electrode materials and annealing furnaces for photovoltaic silicon wafers, controlling oxygen concentration fluctuations within ± 5ppm to ensure product performance.

5、 Installation and maintenance points 1 Installation requirements - Sampling points should be selected to ensure smooth smoke flow, avoid eddies and constrictions, and ensure representative smoke. -The installation location temperature is ≥ 600 ℃, the furnace body is well sealed, and there is no air leakage; The probe should be installed vertically downwards as much as possible, with a tilt angle of ≥ 15 °, to avoid corrosion of the probe by condensed water. -Reserve sufficient maintenance space to avoid burns caused by hot air currents; Separate the signal line from the heating line to reduce electromagnetic interference. two Maintenance Instructions - Daily Maintenance: Regularly clean the probe filter and check the status of the zirconia tube every 3-6 months to avoid dust accumulation and blockage. -Calibration cycle: Under normal operating conditions, standard gas calibration should be performed every 6-12 months. After replacing the probe or transmitter, it must be recalibrated. -Troubleshooting: By using device fault prompts and RS485 communication data, quickly locate temperature control abnormalities, signal failures, or probe damage issues, and replace accessories in a timely manner. 6、 The product value Eby-OXY-8000F helps industrial enterprises achieve combustion optimization through precise oxygen content monitoring, saving an average fuel cost of 8% to 15% and reducing pollutant emissions by 10% to 20%, helping enterprises achieve dual goals of environmental compliance and energy conservation and consumption reduction. Its modular design and convenient maintenance features reduce equipment operation and maintenance costs, making it a cost-effective choice in the field of industrial automation monitoring.