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YOKOGAWA ZR202G Integrated Type Zirconia Oxygen Analyzer |
YOKOGAWA ZR202G Integrated 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 save energy. 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 ZR202G Integrated type Zirconia Oxygen Analyzer integrates a probe and a converter, and does not require any sampling system. The probe can be inserted directly into a stack or furnace to measure the oxygen concentration of the stack gas with a temperature up to 700 degree C. The probe uses a highly reliable zirconia sensor and a field-replaceable heater assembly. The analyzer features infrared switches, allowing the user to operate the instrument without opening the cover in the field. An automatic calibration unit is available for fully automated calibration.
The ZR202G is ideal for monitoring the oxygen concentration or achieving low oxygen combustion in large- or small-sized boilers, various industrial furnaces, and combustion equipment.
Features
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Reduces installation costs |
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Infrared switch operation |
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Zirconia sensor and heater assembly can be replaced in the field |
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Can measure either oxygen concentration or humidity |
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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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Display |
6-digit LCD |
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Switch |
Three optical switch |
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Oxygen concentration |
0.01 to 100 vol% O2 |
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Output signal |
4 to 20 mA DC, one point(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 550Ω, depending on number of field devices connected to the loop (multi-drop mode). |
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Sample gas pressure |
-5 to + 50 kPa |
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Sample gas temperature |
0 to 700℃ (Probe only) |
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Probe length |
0.4, 0.7, 1.0, 1.5, 2.0, 2.5, 3.0 m |
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Contact output |
Two points, contact capacity 30 V DC 3 A, 250 V AC 3 A (resistive load) |
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Contact input |
Two points |
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Calibration |
Method; zero/span calibration
Calibration mode; automatic, semi-automatic and manual (with optical switch) |
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Construction |
Non-explosion proof. Equivalent to NEMA4X/IP66 |
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Ambient temperature |
-20 to 55℃ (-5 to 70℃ on the case surface) |
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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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