Zirconia oxygen analyzer

OXY800Zirconia oxygen analyzerBased on the principle of zirconia, zirconia cells are installed on top of sensors and directly inserted into the flue for measurement. Direct measurement and in-situ measurement provide accurate and rapid measurement readings for combustion optimization control and smoke emission detection.

The application of OXY800 zirconia oxygen analyzer in combustion monitoring can help the industry achieve significant achievements in energy conservation. It can be widely used in energy consuming industries such as steel, electricity, petrochemicals, ceramics, papermaking, food, and textiles; It can also be applied to various combustion equipment, such as incinerators and small and medium-sized boilers. By using an analyzer for combustion monitoring, fuel can be burned more thoroughly, which helps reduce emissions of CO2, SOx, and NOx, thereby preventing climate change and air pollution.

The OXY800 is equipped with a LEL display screen, which can display various setting screens, calibration screens, and oxygen concentration trend screens, making it easier to operate and more powerful in display function. The converter has various standard functions, such as measurement, computation, and maintenance functions such as self diagnosis.

Zirconium cell analyzerprinciple

Zirconia (ZrO2) is a ceramic, a solid with ion conductive properties. At room temperature, it is a monoclinic crystal. When the temperature rises to 1150 ℃, the crystal structure transforms into a cubic form, with a volume shrinkage of about 7%; When the temperature decreases, it becomes a monoclinic crystal again. If heated and cooled repeatedly, ZrO2 will break. Therefore, pure ZrO2 cannot be used as a measuring element. If a certain amount of calcium oxide (CaO) or yttrium oxide (Y2O3) is added as a stabilizer in ZrO2, and then high-temperature calcination is carried out, it becomes a stable zirconia material. At this time, tetravalent zirconium is replaced by divalent calcium or trivalent yttrium, and oxygen ion holes are generated, so ZrO2 belongs to anionic solid electrolytes. ZrO2 mainly conducts electricity through the movement of holes, and when the temperature reaches above 600 ℃, ZrO2 becomes a good oxygen ion conductor.

Sintering a platinum electrode on each side of the zirconia electrolyte, when the oxygen partial pressure on both sides of the zirconia is different, the oxygen on the side with higher oxygen partial pressure migrates in the form of ions to the side with lower oxygen partial pressure. As a result, the platinum electrode on the side with higher oxygen partial pressure loses its electron positive charge, while the platinum electrode on the side with lower oxygen partial pressure gains electron negative charge, thus generating an oxygen concentration potential between the two platinum electrodes. This potential is only related to the difference in oxygen content (oxygen concentration difference) between the gases on both sides at a constant temperature. If the oxygen content on one side is known (such as the oxygen content in the air being constant), the oxygen content on the other side (such as the oxygen content in smoke) can be represented by the oxygen concentration potential. By measuring the oxygen concentration potential, the oxygen content in the smoke can be determined.

OXY800 zirconia (non explosion proof type)

Unique design concept and precise manufacturing process

- Durable, long-lasting sensors with a process temperature of up to 1500 ° C

Years of experience in zirconia production and manufacturing

- Able to respond quickly to process changes

- Stable and accurate oxygen measurement

Unique integrated automatic calibration system

- Convenient to meet emission monitoring regulations

- Reduce installation costs without the need for additional external calibration boxes

- Reduce maintenance costs

The sensor length can be customized, with a variety of industrial standard flanges available for selection

- Meet a wide range of application requirements

- Diverse installation options

Convenient sensor replacement

- Structure of on-site repairable sensors

- Easy to disassemble and replace internal components on site

Good transmitter

- Easy to set up, monitor, and intuitive HMI interface

- HART communication protocol

- Sensor performance recording and diagnostic function

Technical Specifications

Measurement object: Oxygen concentration in combustion exhaust gas and mixed gas

Detection principle: Zirconia

Measurement range: 0.01-100 vol% O2

Output signal: 4-20 mA DC

Set range: 0-5 vol% O2; 0 - 100 vol%O2

Sample gas pressure: -5-+250 KPa

Sample gas temperature: 0-700 ℃; 700-1500 ℃ (with high temperature probe adapter)

Probe length: 0.15, 0.5, 0.8, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0m

Power supply: 200-240 V AC, 50/60 Hz

Protection level: IP66

OXY800 zirconia (explosion-proof type)

Technical Specifications

Measurement object: Oxygen

Measurement method: Direct insertion zirconia type

Measurement range: 0-2-50vol%, O2 range can be set arbitrarily

Repeatability: within ± 0.1% FS

Linearity: within ± 2% FS

Response time: 90% response time of 4-7 seconds (through calibrated gas inlet)

Preheating time: more than 10 minutes

Analog output: DC4-20mA (allowable load resistance below 500 Ω)

Power Supply:

Or DC0-1V (output resistance above 100 Ω)

Rated voltage AC100-120V (operating voltage AC90-132V)

AC220-240V (operating voltage AC190-264V)

Rated frequency 50/60Hz

Electricity consumption:

240VA (detector: about 200VA, converter: about 40VA)

Usually 70VA (detector: about 50VA, converter: about 20VA)

Detector specifications

Measuring gas temperature:-10~+600 ℃ (generally used, corrosion-resistant);Jet type: -10~+1500 ℃ (for high temperature use);-10 to+800 ℃ (generally used)

Measurement of gas pressure: 3 to+3kPa

Insertion length: 0.3, 0.5, 0.75, 1m/0.8m (standard) for high dust (with blowing nozzle) without cover, with cover

ejector:Probe for introducing the measuring gas into the detector

Insertion length: 0.5, 0.75, 1, 1.5m (can be specified)

Ambient temperatureTesting department: -10 to+60 ℃;;Injector section: -5 to+100 ℃;Detector flange surface: below 125 ℃ when powered on

Storage temperature: Testing department: -20 to+70 ℃; Injector section: -10 to+100 ℃

Structure: Dustproof and rainproof structure (standard IP66), insulation cover is required in cold regions (can be specified)

Filter: alumina (filtration accuracy 50 μ m) and quartz filter paper

Main material (gas receiving part):Detector: Zirconia, SUS316， platinum, SUS304；Injector (generally used): SUS316, SUS304;Injector (for high temperature use): SiC, SUS316, SUS304

Calibration gas port: connector for 6mm hose, connector for 1/4 inch hose or ball valve

Reference gas port: connector for 6mm hose, connector for 1/4 inch hose

Detector installation: Horizontal ± 45 °, surrounded by clean air

Quality: The detector weighs about 1.6kg; the injector weighs about 15kg (with an insertion length of 1m)