I. Use of zirconia oxygen analyzer

YTZO series zirconia oxygen analyzer can quickly and correctly detect and analyze the content of flue gas produced by boiler, kiln, heating furnace and other combustion equipment in the combustion process, in order to achieve low oxygen combustion control, to achieve energy saving, reduce environmental pollution.

YTZO series zirconia oxygen analyzer has zirconia head (primary instrument) and oxygen transmitter (secondary instrument) two parts.

The YTZO zirconia probe housing is made of high temperature and corrosion resistant stainless steel material. The reference gas can convection itself without external gas. It is equipped with standard gas interface, which can be calibrated with standard gas during field operation. The probe zirconium tube can be easily removed and replaced.

YTZO oxygen transmitter has simple structure, standard installation size, reasonable line design, good process quality, stable and reliable instrument performance, convenient debugging.

YTZO series zirconia oxygen analyzer has been widely used in large and medium-sized power plants in China over the years because of its superior performance and price ratio.

Ii. Technical specifications of zirconia oxygen analyzer

Measurement object: all kinds of industrial furnace flue gas, mixed gas concentration measurement element: zirconia tube

1, oxygen measurement range: 0-- 20.6%O2 or 0--10%

2, instrument accuracy: the basic error of oxygen measurement system is ≤±2% of the full scale value

3, transmitter accuracy: 1.0 level (≤1.0% full scale value)

4, temperature control accuracy: constant temperature point 700±1℃

5, response time: ≤3 seconds (90% response)

6, alarm output: upper and lower limit node output, optional "normally open" or "normally closed" point

7, analog output signal: 4 -- 20 mA ADC (load 0Ω -- 750Ω) corresponding oxygen 0 -- 10%O2 or 0 -- 20.6%O2

8. Background correction range: -20 mV -- +20 mV

9, digital display form: LED four digit tube display

10, power supply: AC220V±15%

11. Power consumption: panel 6W (excluding heating power)

12, heating power: about 50W (average) can provide 150W output power

13, environmental conditions: temperature -20℃ - 60℃; The relative humidity was < 90%

14, detector about 10Kg, converter about 5Kg

15. Calibration method: three-parameter calibration. Air point, standard gas point, operating point.

How to select

The selection is mainly considered in the following aspects:

1. Converter

The converter is available in disk (HD-2D): hole size 75+2mm×150+2mm

Wall-mounted (HD-2C): Mounting size: 260mm×205mm×90mm

The display range of the converter is 0-20.6% or 0-10%.

The output is 4-20mA

The upper and lower limits are normally open nodes. Users can set alarm points by themselves.

2. Detector

(1) Insertion depth selection: furnace wall thickness +300mm (the detector lengths were available (400mm, 600mm, 800mm, 1000mm and 1200mm) (2) selection of smoke point temperature (panel) : smoke temperature 700℃, SK standard detector was selected; Smoke temperature ≥700℃, choose TX high temperature detector

Three, zirconia oxygen analyzer has the following main characteristics:

1, the sensor uses Japanese ion coating technology, greatly improve the service life.

2, zirconia probe made of 321 stainless steel (1Cr18Ni9Ti) sheath, wear and corrosion resistance.

3, in-line: no sampling system, fast response, effectively reduce the ash blockage in the flue gas.

4, thermal diffusion reference: no special reference air pump, simple use and maintenance.

5, two-parameter design: to overcome the dispersion of domestic zirconia performance, accurate measurement, prolong the service life.

6, working condition online calibration: accurate and reliable, single standard gas online calibration is convenient, working condition point can be directly calibrated, accurate measurement.

7, thermal inert protection: easy installation, hot installation, strong adaptability to stop and start furnace.

8, components detachable: components replacement is convenient, easy maintenance, reduce the cost of use.

9, multifunctional display: oxygen content (%); Oxygen potential; Temperature, background potential parameter digital display intuitive and convenient

10, double range: at the same time with 0-10% and 0-20.6% double range, wide measuring range.

11, double output: at the same time with switching node output and 4-20mA two output.

12, large load: 750 euro /4-20mA, easy to remote installation.

13, the background potential is adjustable, wide adjustment range, can be checked at any time the aging components and other parameters.

14, full floating design: common mode input, strong resistance to electric field interference, no special ground wire, easy installation.

15, strong adaptability: can be applied to gas, oil, coal furnace types. Measuring temperature from room temperature to 1400 degrees can be selected to the appropriate model.

1. Working principle of zirconia analyzer

The fully stabilized zirconia ceramic is a kind of solid dielectric, which has ionic conduction property at a certain temperature. It is the key component of the measuring device to convert the oxygen concentration of flue gas into electrical signal. At a certain temperature, when the oxygen concentration is different on both sides of the zirconia tube, an oxygen concentration difference potential will be generated on both sides of the zirconia tube. The two leads on the zirconia tube will send the oxygen concentration difference potential to the secondary instrument for processing calculation and display the oxygen concentration.

2. Main components of zirconia analyzer

Dust filter, zirconia tube element (zirconia solid electrolyte), protective tube, thermocouple, heating furnace, standard gas to gas pipe, junction box and other main components.

3. Basic conditions for normal operation

1, zirconia components need to be heated to 700℃ and maintain a constant temperature of 700℃.

2. The flue gas temperature at the installation point of the zirconia analyzer should be lower than 700℃.

3. The output voltage of the analyzer should match the resistance value of the heating furnace wire. (can heat the electric furnace to 700℃)

4. Instructions for ordering

※ Before ordering, ask customers about zirconia industry, use and whether there are special requirements for zirconia. Industry: 1, conventional power plant 2, sulfuric acid plant chemical plant 3, urban waste incineration power plant (burning garbage, straw, etc.).

2, 3 these two industries because of its corrosive, the environment is worse, so the quality of the instrument is higher, conventional zirconia is unable to meet the requirements, so according to its characteristics out of sulfuric acid plant special zirconia, waste power plant special zirconia. The price of special zirconia is much higher than that of ordinary zirconia.