Overview
Walsn Oxygen Analyzer is designed to measure the continuous oxygen concentration in combustion flue gases of boilers and furnaces. Walsn Oxygen Analyzer uses a non-sampling (wet) analysis method. It consists of detecting unit (oxygen probe) and control unit (transmitter).
The flue mounted probe has a thermostatically controlled heated Zirconia oxide sensor located at the flue end of the probe. The control unit is designed for use with the Zirconia sensor type oxygen probe.
The control unit offers a centralized termination for functions such as an automatic calibration box, external calibration contacts, status relay contacts and analog and serial outputs.
Virtually no maintenance is required. Repair can be carried out quickly and simply: the internal components can be withdrawn from the probe and replaced as one unit.
The probe will safely operate under start-up conditions for all conventional boiler fuels,provided the fuel ignition temperature is greater than 2003F.
Measuring Principle
Walsn Oxygen Analyzer contains a zirconia oxide sensing element, comprising a thimble-shaped zirconia cell fitted with inner and outer electrodes at its closed end.
The inner electrode is exposed to the flue gas entering the open end of the cell; the outer electrode is supplied with air from a pump or regulator and is therefore exposed to a constant partial pressure of oxygen.
Since zirconia is an electrolyte which conducts only oxygen ions at temperatures in excess of 600 F, the voltage generated between electrodes (i.e. the cell output) is a function of the ratio of the oxygen partial pressure on the inner electrode and its temperature. Therefore, any change in the oxygen partial pressure of the flue gas at the exposed electrode produces a change in the cell output voltage as dictated by the Nernst equation.
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Walsn Coriolis Mass Flowmeter Product Features 1) Highly sensitive trapezoidal shape 2) Closed loop controller on ASIC for improved response time and 2-phase flow performance 3) Dynamically balanced tubes for enhanced accuracy Pressure and dual temperature compensation Main Process Fluids Coriolis mass flowmeters are ideal for oils, gases/vapors and two-phase flows. Typical Applications 1) Density Measurement & Control 2) Chemical Injection 3) Reactor feed 4) Mass balance control
Magnetic Coils 1) Current tracking technology ensures a highly stable magnetic field 2) Real time coil excitation verification 3) Coil geometry designed for maximum magnetic field uniformity Environmental Protection 1) Various Ingress Protection ratings available 2) Integrated power surge protection Electrodes 1) High purity, passivized electrodes for long term measurement stability 2) Mathematically optimized electrode shape Human Interface 1) Simple interface 2) Easy to set up 3) High visibility LCD display Optional Functions 1) Digital Communication Available 2) Simultaneous Analog & Pulse outputs 3) Real time output port verification
Overview Walsn Flame Detection System is an essential detection system for coal fuel, gas, and oil Furnace Safeguard Supervisory System, which widely applies to power plants, steel and cements factories, chemical industries, and associated fields. Walsn Flame Detection System carries out real-time detection based on the physical property of flame. Once the flame status is abnormal or the flame is off, the signal will be given as a fault alarm or the logical judgment condition of FSSS to suspend fuel supply and avoid accumulating the combustible materials in the burner or pipe and prevent the burner from explosion. Product Features 1) Able to store 8 sets of documents, applicable to various load, fuel and combustion technologies 2) PTFE insulation material is added to improve parameters of the equipment's heat resistance and extend the working life 3) Integrated and compact design easy to locate and install 4) Our professional installation service team will be shoulder to shoulder with you through the entire process. 5) Remote online tuning and parameters setting. Typical Applications 1) Electric power, petrochemical, metallurgy, cement industry 2) Pulverized coal boiler, fluidized bed boiler, kiln and furnace 3) The gas/coke oven gas/blast furnace gas, light oil, heavy oil and coal
