Product category:
Gas monitoring and analysis
News Release from: Yokogawa UK | Subject: EXAxt ZR
Edited by the Processingtalk Editorial
Team on 16 June 2003
Oxygen and humidity measurement in
boilers / kilns
The new EXAxt ZR Series Zirconia analysers are designed for measuring oxygen content or for making high-temperature humidity measurements in boilers, kilns, furnaces and processes
These new analysers are developed from the Yokogawa field-proven ZO21D zirconia probe technology, but feature a number of performance enhancements and design innovations that make them easy to use and cost-effective to operate and maintain in the most stringent of in situ measurement environments New features include an interactive touch-screen display, the ability to measure three separate parameters simultaneously, built-in HART communications, and a modular design which makes installation and maintenance very simple
This article was originally published on Processingtalk on 14 Jan 2003 at 8.00am (UK)
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The new range includes two models.
The ZR402 is a remote analyser designed for use with a separate zirconia probe, while the ZR202 is an integrated transmitter/detector that combines the detector and analyser into a compact package with local display and infrared controls containing all the intelligent functions required for in situ measurements.
The modular construction allows the heater and probe assembly to be replaced on site, reducing maintenance costs.
In addition, the in situ measurement technique does not require any process conditioning or extractive sampling, which further reduces maintenance costs and allows faster measurement response to changes in the process.
The zirconia detector is available in lengths from 15cm to 5meters, and can be used in process temperatures up to 700C and pressures up to 2.5 bar with a pressure compensation option.
The remote-mounted ZR402 incorporates features such as automatic calibration control, sensor diagnostics, efficiency calculations, real-time trend graphing, two user-configurable analogue outputs, and three user-configurable measurement parameters including oxygen concentration, relative humidity, dewpoint and moisture content.
The integrated ZR202 unit includes a local LCD display and infrared pushbutton operation for local adjustments and calibration control.
The HART communication protocol is used for instrument configuration and accessing information on measured data and diagnostics.
The units are designed to meet CENELEC requirements for flameproof use.
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