Top selling Yokogawa ZR22S Integrated type Explosion-proof Zirconia Oxygen Analyzer
ZR22S Yokogawa zirconia oxygen analyzer is EXAxt series ZR Separate type Zirconia Oxygen/Humidity Analyzer which usually work with connected ZR402G or AV550G converter. It does 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.
ZR22S Yokogawa zirconia oxygen analyzer is most suitable for monitoring combustion and controlling the low-oxygen combustion of various industrial furnaces in explosive atmospheres at petroleum refineries, petrochemical plants, and natural gas plants.
ZR22S Yokogawa zirconia oxygen analyzer owns below typical features:
1. The built-in heater assembly of the probe can be replaced on site, reducing maintenance costs
2. The probe uses a long-life, high-reliability Zirconia sensor
3. The probe uses three-reference gas supply methods for compensation in applications
4. Remote maintenance using digital communications(HART) reduces maintenance costs
5. Wide range of wetted part material optional, SUS 316 (JIS), Hastelloy, Inconel
6. Explosion-proof design
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ZR22S SPECIFICATION
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Measurement object
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Oxygen concentration in combustion exhaust gas and mixed gas
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Measurement system
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Zirconia system
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Explosion-proof Approval
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ZR22S-A (ATEX); EEx d IIB + H2,
ZR22S-B (FM); Class I, Division1, Groups B, C and D ZR22S-C (CSA); Class I, Division1, Groups B, C and D ZR22S-D (IECEx); Ex d IIB + H2, T2 |
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Measurement range
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0.01 to 100 vol%O2
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Output signal
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4 to 20 mA DC, two points (maximum load resistance 550 Ω)
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Setting range
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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)
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250 to 550 Ω, depending on number of field devices connected to the loop (multi-drop mode)
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Sample gas pressure
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-5 to +5 kPa
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Sample gas temperature
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0 to 700℃ (Probe only)
700 to 1400℃ (with 0.15m probe and High Temperature Probe Adapter) |
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Probe length
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0.15, 0.4, 0.7, 1.0, 1.5, 2.0 m
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Contact output
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Four points (one is fail-safe, normally open)
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Contact input
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Two points
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Calibration
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Method ; zero/span calibration
Calibration mode ; automatic, semi-automatic and manual (All are operated interactively with an LCD touchscreen) |
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Construction of detector
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Heater and thermocouple replaceable construction, equivalent to NEMA4X/IP66
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Converter Construction
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Outdoor installation. Equivalent to NEMA4X/IP66
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Ambient temperature
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Terminal box: -20 to 60℃, Converter: -20 to 55℃
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Reference Gas System
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Instrument Air; 50 kPa
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Wiring Connection
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ATEX; M20 by 1.5 mm or 1/2 NPT select one type (4 pieces)
FM; 1/2 NPT (4 pieces) CSA; 1/2 NPT (4 pieces) IECEx; M20 by 1.5 mm or 1/2 NPT select one type (4 pieces) |
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Power supply
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85 to 264 V AC; 45 to 66 Hz
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