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ZR802G
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Yokogawa
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Product description
Overview
This analyzer consists basically of a probe and a converter that are used as both a Zirconia Oxygen
Analyzer and High Temperature Humidity Analyzer.
Two types are available direct insertion zirconia oxygen analyzer.
The separate type which consists ZR22G of detector and ZR802G of converter.
The integrated type ZR202G combining detector and converter.
Separate and integrated type Zirconia oxygen analyzers do not need a sampling device, and allow direct installation of the probe in the wall of a flue or furnace to measure the concentration of oxygen in the stack gas. The ZR802G converter uses a digital display, displays the cell temperature and cell emf in addition to the oxygen concentration and includes a Human Machine Interface (HMI), that offers easy touch screen operation.
This analyzer is most suitable for monitoring the oxygen concentration of combustion gases in large or small boilers, various industrial furnace and combustion devices, or for the control of low-oxygen combustion.
Separate type and integrated type Zirconia High Temperature Humidity Analyzers are used to measure the humidity of hot gases continuously in driers which use an electrical heater or hot gas as the heat source.
They can also be used in a variety of manufacturing applications in humidifiers, as well as in driers, for humidity measurement and control. They can help improve productivity in these application fields.
Features:
• The built-in heater assembly of the probe can be replaced on site, reducing maintenance costs.
• The probe uses a long-life, high-reliability Zirconia sensor.
• The probe uses three-reference gas supply methods (natural air convection, instrument air, and pressure compensated) in its applications.
• The converter incorporates the LCD touchscreen for ease of operation.
• The converter can be used as an oxygen analyzer as well as a high temperature humidity analyzer.
• The deterioration status of the sensor can be confirmed by the sensor resistance check function (self-diagnosis function) in the converter.
• The converter records history of alarm on/off, measured value history for up to 41 days, and others.
• The integrated type integrates both probe and converter, to reduce wiring, piping, and installation costs. This type of unit uses an optical switch for ease of operation at the site.
• Remote maintenance using digital communications (HART, Modbus RTU) reduces maintenance costs.
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