Low-cost flue gas oxygen analyser
May 2004
Analytical Instrumentation & Environmental Monitoring
Ametek has introduced a new generation WDG 210/in situ flue gas oxygen analyser. This reliable and rugged device is designed for use with net oxygen. Cost-effective in operation, it uses industry-proven zirconium oxide sensor technology with built-in diagnostics and over-temperature cell protection circuitry.
The unique design of the in situ sensor allows the inner tube structure, where the oxygen cell and thermocouple/furnace assembly are housed, to be easily removed from the outer protection tube, which remains in the process. Since the inner probe is completely field serviceable, there is no need to return the probe to the factory, eliminating downtime effectively.
Suitable for both indoor and outdoor use, the WDG 210/in situ has an output range from 0-1% to 0-100% O2 and an accuracy ±1% of the measured value or ±0,05% oxygen, whichever is greater. Its response is <3 s for calibration gas with a 63% of process step change in <20 s.
Housed in a NEMA 4X enclosure, the microprocessor-based control unit has a backlit, two-line display that indicates combinations of % oxygen, cell millivolts, cell temperature, thermocouple millivolts and time/date. The recorder output is fully scaleable from 4-20 or 0-20 mA with a maximum 1 kΩ load.
The WDG 210/in situ analyser is suitable for use in combustion control systems, gas, oil or coal-fired boilers, NOx reduction systems and similar applications.
For more information contact Noel Bauchop, OEN Enterprises, 011 675 4447, [email protected], www.oenenterprises.co.za
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