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YOKOGAWA ZR22G, ZR402G Separate Type Zirconia Oxygen Analyzer |
YOKOGAWA ZR22G, ZR402G Separate Type Zirconia Oxygen Analyzer
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
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The separate type converter ZR402G incorporates a LCD touch-screen for ease of operation. |
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The built-in heater assembly of the probe can be replaced on site, reducing maintenance costs. |
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The probe uses a long-life, high-reliability Zirconia sensor. |
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Remote maintenance using digital communications (HART) reduces maintenance costs. |
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Note: HART is a registered trademark of HART Communication Foundation. |
Specifications
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Measurement object |
Oxygen concentration in combustion exhaust gas and mixed gas. |
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Measurement system |
Zirconia system |
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Oxygen concentration |
0.01 to 100 vol% O2 |
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Output signal |
4 to 20 mA DC, two points (maximum load resistance 550Ω) |
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Measurement range |
Any setting in the range of 0 - 5 vol%O2 to 0 - 100 vol%O2 (in 1 vol%O2), or partial range |
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Digital communication (HART) |
250 to 550 Ω, depending on number of field devices connected to the loop (multi-drop mode) |
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Sample gas pressure |
-5 to +250 kPa |
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Sample gas temperature |
0 to 700℃ (Probe only)
700 to 1400℃ (with 0.15m probe and High Temperature Probe Adapter) |
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Probe length |
0.15, 0.4, 0.7, 1.0, 1.5, 2.0, 2.5, 3.0, 3.6,4.2, 4.8, 5.4 m |
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Contact output |
Four points (one is fail-safe, normally open) |
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Contact input |
Two points |
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Calibration |
Method ; zero/span calibration
Calibration mode ;
automatic, semi-automatic and manual (All are operated interactively with an LCD touch screen) |
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Construction of detector |
Non-explosion proof. Equivalent to NEMA4X/IP66 |
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Construction of converter |
Outdoor installation. Equivalent to NEMA4X/IP66 |
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Ambient temperature |
Probe: -20 to 150℃
Converter: -20 to 55℃ |
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Power supply |
85 to 264 V AC; 45 to 66 Hz |
Performance
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Repeatability |
±0.5% Maximum value of set range |
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Linearity |
±1% Maximum value of set range |
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Drift |
±2% Maximum value of set range/month |
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Response time |
90% response within 5 sec | |
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