ZR22S, ZR202S Explosionproof Zirconia Oxygen Analyzers

Two types are available for an explosionproof direct in situ zirconia oxygen analyzer. Model ZR22S/ZR402G is a separate type which consists of a ZR22S explosionproof probe and a ZR402G non-explosionproof converter.

Model ZR202S is an integrated type which combines a probe and a converter. Both 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 converter displays the cell temperature and cell emf in addition to the oxygen concentration.

This analyzer is most suitable for monitoring combustion and controlling the low-oxygen combustion of various industrial furnaces in such explosive atmospheres as at petroleum refineries, petrochemical plants, and natural gas plants.

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 separate type converter ZR402G incorporates a LCD touch-screen for ease of operation.
*	The integrated type ZR202S integrates both probe and converter, to reduce wiring, piping, and installation costs. ZR202S of unit uses an optical switch for ease of operation at the site.
*	Remote maintenance using digital communications (HART) reduces maintenance costs.
	Note: HART is a registered trademark of HART Communication Foundation.

Yokogawa’s zirconia oxygen analyzers are used for combustion monitoring and control in a wide variety of applications and help industries to make considerable achievements in energy saving. The applications range from energy-consuming industries, such as iron and steel, electric power, oil and petrochemical, ceramics, pulp and paper, food, and textiles, to various combustion facilities, such as incinerators and small- and medium sized boilers. Combustion monitoring and control using the analyzer also contribute to a lowering of CO2, SOx, and NOx emissions by allowing for more complete combustion, thus preventing global warming and air pollution.

The ZR402G converter is equipped with an LCD touch screen which has various setting displays, a calibration display, oxygen concentration trend display, with easier operation and improvement of display functions. The converter is equipped with various standard functions such as measurement and calculation as well as maintenance functions including self-test. The ZR22G separate-type detector uses a high-reliability zirconia sensor, and its heater assembly can be replaced on site. The detector is mounted, for example, on the wall of a flue and can measure the gases directly.

Features

*	The separate type converter ZR402G incorporates a LCD touch-screen for ease of operation.
*	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.
*	Remote maintenance using digital communications (HART) reduces maintenance costs.
	Note: HART is a registered trademark of HART Communication Foundation.