A, zirconia oxygen analyzer use
YTZO series zirconia oxygen analyzer can be used for boiler, furnace, heating furnace and other combustion equipment in the combustion process produced by the content of flue gas rapid and correct online detection analysis, in order to achieve low oxygen combustion control, to achieve the purpose of energy saving, reduce environmental pollution.
YTZO series zirconia oxygen analyzer has zirconia head (instrument) and oxygen transmitter (instrument) two parts.
YTZO type zirconia probe housing is made of high temperature and corrosion resistant stainless steel. The reference gas can convection by itself without additional gas. And a standard gas interface, can be used in field operation with standard gas calibration. Probe zirconium tube can be easily removed and replaced.
YTZO type 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 domestic large and medium-sized power plants for several years because of its superior performance and price ratio.
Two, zirconia oxygen analyzer technical specifications
Measuring object: all kinds of industrial furnace flue gas, mixed gas concentration measuring element: zirconia tube
1, oxygen measurement range: 0-- 20.6%O2 or 0--10%
2, instrument accuracy: the basic error of the system oxygen measurement ≤±2% full range value
3, transmitter accuracy: 1.0 (≤1.0% full range value)
4, temperature control precision: constant temperature point of 700±1℃
5, response time: ≤3 seconds (90% response)
6, alarm output: upper and lower node output, optional "normally open" or "normally closed" point
7, analog output signal: 4 -- 20 mA ADC (load 0 ω -- 750 ω) corresponding to oxygen 0 -- 10%O2 or 0 -- 20.6%O2
8, background correction range: -20 mV - +20 mV
9, digital display form: LED four digital 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 is 90 percent panel
14, the detector about 10Kg, converter about 5Kg
15. Calibration method: three-parameter calibration. Air point, standard gas point, operating point.
How to choice
Selection is mainly considered in the following aspects:
1. Converter
Converter has disc (HD-2D): hole size 75+2mm×150+2mm
Wall-mounted (hd-2c): mounting size: 260mm x 205mm x 90mm
Converter display range: 0-20.6% or 0-10%.
Output: 4-20mA
The upper and lower limits are normally open nodes. Users can set alarm points by themselves.
2. Detector
(1) Insertion depth selection: the thickness of the furnace wall was +300mm (the detectors were available for panel lengths of 400mm, 600mm, 800mm, 1000mm and 1200mm). (2) The selection of lighting temperature for panel installation was panel temperature (panel temperature was 700 ° C and the PANEL was SK standard). If the smoke temperature is greater than or equal to 700℃, select TX high-temperature detector
Three, zirconia oxygen analyzer has the following main characteristics:
1, the sensor uses The Japanese ion plating technology, greatly improve the service life.
2, zirconia probe with full 321 stainless steel (1Cr18Ni9Ti) sheath, wear resistance and corrosion resistance.
3, straight plug type: no sampling system, quick response, effectively reduce the ash blockage in the flue gas.
4, thermal diffusion reference: no special reference air pump, simple use and maintenance.
5, double parameter design: to overcome the domestic zirconia performance discrete, accurate measurement, prolong the service life.
6, working condition online calibration: accurate and reliable, single standard gas online calibration is convenient, working condition points can be directly calibrated, accurate measurement.
7, thermal inert protection: easy to install, hot installation, strong adaptability to stop furnace.
8, components detachable: components easy to replace, easy to maintain, reduce the use of cost.
9, multi-function display: oxygen content (%); The oxygen potential. Temperature, background potential parameters digital display is convenient
10, double range: at the same time 0-10% and 0-20.6% double range, wide measuring range.
11, double output: at the same time with switching quantity node output and 4-20MA two output.
12, large load: 750 Euro /4-20mA, easy to remote installation.
13, the background potential is adjustable, the adjustment range is wide, you can check component aging and other parameters at any time.
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 all kinds of furnace. Suitable models are available for measuring temperatures from room temperature to 1400 degrees Celsius.
1. Working principle of zirconia analyzer
Fully stabilized zirconia ceramics is a kind of solid dielectric, which has ionic conductive property at a certain temperature. It is the key element for converting oxygen concentration of flue gas into electrical signal in measuring device. At a certain temperature, when the oxygen concentration on both sides of the zirconia tube is not at the same time, the two sides of the zirconia tube will produce an oxygen concentration difference potential, the two leads on the zirconia tube will send the oxygen concentration potential to the secondary instrument for processing and calculation and display the oxygen.
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 working conditions
1. The zirconia element shall be heated to 700℃ and kept at a constant temperature of 700℃.
2. The flue gas temperature at the installation point of the zirconia analyzer is lower than 700℃.
3. The output voltage of the analyzer should match the resistance value of the heating electric furnace wire. (Can heat the electric furnace to 700℃)
4. Instructions for ordering
※ Before placing an order, please inquire with the customer about the industry and use of zirconia and whether there are special requirements for zirconia. Use industry: 1, conventional power plant 2, sulfuric acid plant chemical plant 3, municipal waste incineration power plant (burning garbage, straw, etc.).
2 and 3 These two industries have higher quality requirements for instruments because of their large corrosiveness and harsh environment. Conventional zirconia cannot meet the requirements. Therefore, according to their characteristics, the special zirconia for sulfuric acid plants and waste power plants are withdrawn. The price of dedicated zirconia is much higher than that of ordinary zirconia.
