Three detection principle: electrochemical oxygen analyzer, imported from Siemens magnetic oxygen analyzer, laser analyzer (imported to Vaisala Lang Westminster) TR-9200 coke oven gas oxygen content online analysis is designed carefully designed for supporting an electrical instrumentation equipment for electric coke catcher gas composition online continuous detection of O2 content. It is a mechanical, electrical, instrument in one, with high reliability, first-class sensor, advanced measurement technology and sophisticated sample pretreatment combined to form a fully functional, safe and reliable, little maintenance, easy to operate, the use of life-long process analysis system. The system uses a state-of-the-art sampling and pretreatment technology for the purification and processing of tar coke oven gas, coal dust, water vapor and naphthalene, hydrogen sulfide and other corrosive substances, to ensure the long-term run online analytical instruments. Compared with similar products with high technical advantages and cost advantages. Scope: This device is suitable for all kinds of electric fishing coke and various types of furnace gas pipeline oxygen measurement, automatic analysis of the oxygen content, equipment safety interlock control. The composition and function of the analysis and control device The device is a mechanical, electrical, instrument integration complete analysis of control device. The entire package from analysis of cabinet components (internal sample purification unit, and control the purge unit and analysis proofing unit) and dedicated sampling device components installed in the process line. Dedicated sampling devices: The explosion-proof. Stainless steel sample purification unit. Extremely complex for the coke oven gas harmful ingredients contained in the harsh working conditions, the use of international advanced scroll control cold tar, in addition to naphthalene, except for the purpose of water vapor and dust filter technology has reached the sampling purify the primary treatment. Analysis of cabinet components: the analysis cabinet with positive pressure pneumatic explosion-proof Structure. The cabinet contains the following units: pretreatment unit: special liquid filter (sink, fog filter, in addition to the sulfur equivalent components to complete purification of tar, naphthalene and other ingredients in the middle-class purification; condenser, peristaltic row pump, flow separation, fine filters and other components to complete the fine purification; made of special corrosion-resistant suction pump, flow controller composition samples taken gas and steady flow of work. ensure that the sample of the coke oven gas step-by-step purification, dust, dampness, regulator, steady flow, a series of links, the accuracy of its filter up to 0.1μ. meet the requirements of the measured sample gas into the analytical instruments to ensure the accuracy of analytical instruments and long-term reliable analysis the control interlock unit: continuous analysis of the oxygen content of the sample gas line oxygen analyzer, continuous output 4-20mA signal. oxygen analyzer with alarm output contacts, alarm and interlock value can be set within the range, When the concentration of O2 content overrun alarm and interlock technical parameters and description: Technical parameters: location of sampling points (coke oven gas electric fishing coke-site sampling and analysis point for conditions): coke oven gas electric fishing coke export analysis parameters: O2 (Optional analysis principle: electrochemical, paramagnetic or laser analyzer, the price difference) measuring range: O2 :0-2% (1% O2 signal output alarm node, set free) the measured gas temperature: 40 ° C to 60 ° C dust content: trace moisture: moderate amount of tar containing: a small amount of other corrosive ingredients (S O2): a small amount of crystals (naphthalene): a small amount of pipeline pressure: slightly positive pressure information analysis cabinet components and device technical parameters: by the pre-treatment unit, power supply unit, analysis proofreading unit. (1) pre-processing unit comprises: a special filter assembly (except Chennai, tar), gas-liquid separator, dehumidifiers, air pump (imported components) the fine sulfur pipe, flow regulator, etc. through a coarse, fine tertiary filtration and separation, absorption of dust, tar, Chennai, mist, cooling and dehumidifying water purification processing, analysis ultraclean analysis instrument air source (2) The power supply and control unit comprises: a power control panel (including high-performance air switch, terminals), output fault alarm contact signal; data acquisition, automatic processing of oxygen ingredient limit alarm function central PLC control, way solenoid valve (3) analysis unit includes:-11C-type JNYQ-O oxygen analyzer (imports sensors), flow meters, flow path switching valve, the standard sample gas and other (4) Limit Alarm function: analyzer continuous on-line analysis of the purified gas sample output 4-20mA signal and the passive electric shock signal if the oxygen concentration limit, the device immediately output alarm contact signal (passive contact capacity 1A), ensure that the electric fishing coke the safe operation of the equipment. (5) measurement range and accuracy of analysis: the measurement object range: 0-2% O2 Accuracy: ≤ ± 1% FS linearity error: ≤ ± 1% FS device system response time: T90 <15s (6) signal Output: the site of the large screen LCD digital display O2 content and constituent signal of 4-20mA isolated output to the host computer or DCS. limit alarm, interlock, fault alarm signal output and capacity: oxygen concentration limit alarm value in the span of the instrument respectively can be set (factory setting the concentration alarm value: 0.80% O2) alarm signal output passive contact capacity: 220VAC, 1A (7) device pre-processing stainless steel sampling probe, three dust, sulfur removal, in addition to naphthalene, tar mist, in addition to water, the regulator, steady flow, fast relief, dust purification accuracy ≤ 0.1u (8) device maintenance cycle: ≥ 30 days