Michell Instruments XZR500 combustion control oxygen analyser
The XZR500 combustion control oxygen analyser from Michell Instruments is designed to monitor the oxygen levels in combustion processes. Its purpose is to determine the optimum amount of air needed for combustion, ensuring the fuel is used efficiently and potentially saving thousands of dollars. It monitors the exhaust gas for excess oxygen ensuring that the conditions are kept close to stoichiometric (ideal) levels.
The product uses Michell’s zirconium oxide oxygen sensor, which has a metallic sealed reference (MSRS) to give long-term reliability. The combination of this type of sensor, placed in an isothermal oven within the analyser, negates the effects of varying, high temperatures as well as the corrosive nature of the gas. This also reduces time spent on maintenance: if a sensor needs replacement, this can be done within minutes without interrupting the process.
The analyser has a control unit which can be placed at ground level for convenience, a sensor head close-coupled to the stack for ease of installation and quick response, and a variety of probe materials allowing a wide range of applications to be addressed.
For most applications the probes use the Pitot effect to extract non-conditioned sample gas from the process to the sensor head and back to the flue. Placing the probe as close to the burner as possible gives the most accurate readings, so the unit has ceramic probes capable of operating effectively in temperatures up to 1300°C.
Typical applications include combustion efficiency for boilers, industrial waste incinerators and crematoria. When operated in dirty applications, such as coal-fired power stations, the product can be offered with a blow-back mechanism for increased reliability in readings and reduced manual intervention.
Phone: 03 9017 8225
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