The ZR probe's in-situ measurement method does not require any process conditioning or extractive sampling. This reduces maintenance costs and allows faster measurement response to changes in the process. The new probe's modular design incorporates a rebuildable heater and thermocouple assembly, the industry standard field replacable Yokogawa Zirconia cell, and removable reference and calibration lines to create an oxygen measurement product designed for simple, quick and low-cost field maintenance.
* Rebuildable, field maintainable design
* Proven Zirconia sensor technology
* Can be used in pressurized ducts up to 2.5 bar, 700°C (up to 1871ºC with ZR22P adapter)
* Optional filters or flame arrestors
* Multiple flange size options
* Hazardous area probe available (ZR22S)

The O2mation, model AV550, averaging oxygen analyzer was designed with a focus on practical performance. Yokogawa has refined our expertise in the combustion oxygen business into this new and creative product. It is packed with features designed to minimize plant down time and technical support for the oxygen measurement. A multiple point oxygen measurement system may be required for situations when gas stratification in the flue duct affects combustion control. The AV550G averaging analyzer is ideal for combustion control in large utility boilers or various industrial furnaces.
* Can accept inputs from up to eight ZR22 detectors
* Sends both individual and averaged sensor outputs
* Multipoint analyzer reduces installation and maintenance costs
* Large 5.7-inch color LCD display shows various measurement, setup, calibration, and trend screens
* Intuitive touchscreen is easy to read and simplifies setup and maintenance
* Individual channel cards can be "hot swapped"
* 4-20 mA standard outputs with HART or Foundation Fieldbus

* Full color touch screen operation
* Multiple display modes shows average data, single detector or all detector gas concentrations
* Handles input of up to 8 oxygen detectors
* Redundant system using multiple CPUs
* "Hot swap" of channel cards to minimize analyzer down time
* Eight 4/20mA outputs for individual detectors
* Three 4/20mA outputs for average oxygen concentration outputs
* Failed, in calibration, or alarming, detectors are automatically excluded from average calculations
* Automatic or manual type calibration methods
* 24V or 120VAC auto-calibration power option
* Allows contact input, calibration activation, range change and detector performance validation
* Intuitive "common language" operation
* Housing temperature alarm to notify user of over temperature conditions on the electronics
* Trend graphing – allows trend view and stacked trend view of oxygen concentrations
* Smart calibration – uses historical calibration data to estimate when the next calibration should occur
* Asymmetry alarm – uses historical calibration data to determine possible measurement errors due to process condition changes
* Remote Validation – permits control room activation of zero, span or midpoint gas concentrations without running an actual
calibration.
* Cal line purge function – allows the gas purge of calibration lines of condensation before the detector is heated up to prevent
water damage to the zirconia cell.

Specification