A highly versatile, can be directly replaced by other manufacturers of oxygen analyzer. 
 2 big screen blue and white LCD display. 
 ? Three all Chinese operation menu (export products can provide the English menu). 
 ? (4) oxygen range of 0-25% is free to set (the lowest range 0-5%). 
 Temperature using PID temperature control, heated point of 700 ° C and 750 ° C (site selection). 
 ? Set oxygen, lower limit alarm indicator on the temperature, the lower limit alarm indicator. 
 ? 7. Background potential one-button calibration. 
 ? Available standard gas-line calibration. 
 9 4-20mA standard current output with the main circuit photoelectric isolation, can be directly Far EasTone into the DCS system. 
 10 a variety of failure message. 
 Working principle 
 Zirconia is a high-temperature electrolyte concentration cell, the number of Baidu's high temperature environment, with 
 Produce the conductive properties of the migration of oxygen ions, the measured gas (flue gas or other gases) and the reference gas 
 Body (air or other gases) in the partial pressure of oxygen in zirconia on both sides of the platinum electrode, between the poles of a 
 Given amount of oxygen ion mobility arising from the oxygen concentration potential, its potential value and oxygen concentration in the relationship, 
 Nernst (the Nernst) formula: 
 E = RT/4F × LnP1/P2 
 Where: E-oxygen concentration potential (V) 
 R-ideal gas constant (8.314J/moLK) 
 T-absolute temperature (K) 
 F-Faraday constant (96500c/moL) 
 P1-reference gas pressure (air) 
 P2-measured gas partial pressure 
 Transmitter to the measured data, calculated by the microcontroller conversion, the oxygen content is displayed on the LCD screen, and convert the current signal for the computer or account loggers. 
 700 ° C and 750 ° C when the oxygen concentration and the potential relationship of the oxygen concentration Annex. 
 Technical indicators 
 ?? Range: 0.01 to 25.0% O2 (range from 5.00% -25.00% ** set) 
 Output signal: 4 ~ 20mA load resistance ≤ 500Ω isolation 
 Repeatability: ± 0.5% of full scale 
 The basic error: ≤ ± 2% (full scale) 
 Stability: ≤ ± 1% (continuous test of the instrument 4h) 
 Response time: in the introduction of the standard gas from the detector entrance, within 5 seconds to achieve a 90% response 
 Ambient temperature: Detector -10 ℃ ~ 80 ℃ converter 0 ℃ ~ 40 ℃ 
 Power supply and power consumption: power 220 ± 10% VAC, the power consumption up to 150W 
 ?? Sample temperature: ≤ 700 ° C (700 ° C above consultation supplier) 
 ??? Sample gas pressure range: -500 ~ 500mmH2O 
 ?? Detector length: 0.4m; 0.8m; 1.0m; 1.2m; (other lengths can be based on user requirements) 
 Detector structures 
 Detector device from dust, zirconia tube furnace, thermocouple, gas conduit, junction boxes, and shell components. The entire unit with a fully enclosed structure, to increase the sealing performance of the device, and improve life. The detection of high dust environment, to achieve a better filtering effect, the installation of a porous ceramic filter. 
 Zirconia tube detector is the core component, severe vibration, should be avoided in the case of ceramic fragile goods, transport and installation process to avoid damage. The role within the furnace in the detector is the required temperature of zirconia components work properly, made a special treatment to extend the life of the furnace, in the process. Detector with a heating device, so in less than 700 ° C environment to work properly.