Manufacturer: Yokogawa Electric Corporation
Yokogawa Zirconia Oxygen Detector ZR22S-A-150-C-C-E-T-M-E-A
Yokogawa Explosionproof Direct In Situ Zirconia Oxygen Analyzer
Two types are available explosion-proof direct in situ zirconia oxygen analyzer. Model ZR22S/ZR402G is a separate type which consists of the ZR22S explosion-proof detector and the ZR402G non-explosion-proof converter. Model ZR202S is an integrated type which combines a probe and a 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 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 explosive atmosphere at petroleum refinery, petrochemical plant, and natural gas plant.
Yokogawa Zirconia Oxygen Detector ZR22S-A-150-C-C-E-T-M-E-A
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. The ZR202S uses an optical switch for ease of operation at the site.
•Remote maintenance using digital communications
Yokogawa Zirconia Oxygen Detector ZR22S-A-150-C-C-E-T-M-E-A
General Specifications
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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,
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ZR22S-B (FM); Class I, Division1, Groups B, C and D
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ZR22S-C (CSA); Class I, Division1, Groups B, C and D
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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 (ZR402G) (maximum load resistance 550Ω)
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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 550Ω, 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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For 0.15m probe, -0.5 to +5 kPa.
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No pressure fluctuation in the furnace should be allowed.
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Sample gas temperature
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0 to 700°C
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700 to 1400°C (with 0.15 m 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
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Calibration mode; automatic, semi-automatic and manual (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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Construction of converter
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Non-explosion-proof, outdoor installation, equivalent to NEMA4X/IP66
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Ambient Temperature
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-20 to +60°C (-20 to +150°C on the terminal box surface) (ZR22S)
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-20 to +55°C (ZR402G)
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Reference Gas System
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Instrument Air; 50 kPa + the pressure inside the furnace Consumption; Approx. 1Nl/min
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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)
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FM; 1/2 NPT (4 pieces)
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CSA; 1/2 NPT (4 pieces)
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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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Yokogawa Zirconia Oxygen Detector ZR22S-A-150-C-C-E-T-M-E-A
Model and Suffix Codes
Model
ZR22S - - - - - - - - - - - Separate type Explosion-proof Zirconia Oxygen Analyzer, Detector
Explosion-proof Approval
-A - - - - - - - - - - - ATEX certified flameproof (*11)
-B - - - - - - - - - - - FM certified explosion-proof
-C - - - - - - - - - - - CSA certified explosion-proof
-D - - - - - - - - - - - IECEx certified flameproof (*12)
Length
-015- - - - - - - - - - 0.15 m (for high temperature use) (*1)
-040 - - - - - - - - - - 0.4 m
-070 - - - - - - - - - - 0.7 m
-100 - - - - - - - - - - 1.0 m
-150 - - - - - - - - - - 1.5 m
-200 - - - - - - - - - - 2.0 m
Wetted material
-S - - - - - - - - - - - Stainless steel
-C - - - - - - - - - - - Stainless steel with Inconel calibration gas tube (*7)
Flange (*2)
-A - - - - - - - - - - ANSI Class 150 2 RF SUS304 (JIS) (*10)
-B - - - - - - - - - - ANSI Class 150 3 RF SUS304 (JIS)
-C - - - - - - - - - - ANSI Class 150 4 RF SUS304 (JIS) (*10)
-E - - - - - - - - - - DIN PN10 DN50 A SUS304 (JIS)
-F - - - - - - - - - - DIN PN10 DN80 A SUS304 (JIS)
-G - - - - - - - - - - DIN PN10 DN100 A SUS304 (JIS)
-K - - - - - - - - - - JIS 5K 65 FF SUS304 (JIS)
-L - - - - - - - - - - JIS 10K 65 FF SUS304 (JIS)
-M - - - - - - - - - - JIS 10K 80 FF SUS304 (JIS)
-P - - - - - - - - - - JIS 10K 100 FF SUS304 (JIS)
-Q - - - - - - - - - - JIS 5K 32 FF SUS304 (JIS) (for high temperature use) (*3)
-R - - - - - - - - - - JPI Class 150 4 RF SUS304 (JIS)
-S - - - - - - - - - - JPI Class 150 3 RF SUS304 (JIS)
-W - - - - - - - - - - Westinghouse
Reference gas
-E - - - - - - - - - - External connection (Instrument air) (*8)
Gas Thread
-R - - - - - - - - - - Rc1/4
-T - - - - - - - - - - 1/4NPT(Female)
Connection box thread
-M - - - - - - - - - - M20 x1.5 mm
-T - - - - - - - - - - 1/2 NPT (*9)
Instruction manual
-E - - - - - - - - - - English
-A - - - - - - - - - - Always -A
Options
Valves
/C, Inconel bolt (*4)
/CV, Check valve (*5)
/SV, Stop valve (*5)
Tag plates
/SCT, Stainless steel tag plate (*6)
/PT, Printed tag plate (*6)
