.General Introduction
Yokogawa ZR202S zirconia oxygen analyzer is the integrated explosion-proof type including both probe detector and converter that are used for hazardous zone Exd. 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 which 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.
2.General Specification
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Main Characters
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Description
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Sample Gas Temperature
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0 to 700℃
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Sample Gas Pressure
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-5 to + 250kPa
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Probe Length
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0.4, 0.7, 1.0, 1.5, 2.0m
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Probe Material
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SUS316 (JIS)
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Ambient Temperature
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-20 to +55℃
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Reference Gas System
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Instrument Air
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Instrument Air System
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50kPa + the pressure inside the furnace
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Wetted Material
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SUS316 (JIS), Zirconia, SUS304 (JIS) or ASTM grade 304 (flange), Hastelloy B, Inconel 600, 601)
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Gas Connection:
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Rc1/4 or 1/4 NPT (Female)
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Wiring Connection
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M20 × 1.5, 1/2 NPT
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Installation
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Flange mounting
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Probe Mounting Angle
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Horizontal to vertically downward.
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Output
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1*4-20ma Hart, 2* contact signal
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Display
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6-digit LCD
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3.Model Selection
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Model
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Suffix Codes
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Description
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ZR202S
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Integrated type Explosion-proof Zirconia Oxygen Analyzer
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Explosion proof Approval
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-A
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ATEX certified flameproof
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-B
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FM certified explosion-proof
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-C
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CSA certified explosion-proof
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-D
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IECEx certified flameproof
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-Q
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EAC with PA certified explosion-proof
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-R
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EAC certified explosion-proof
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-K
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KOSHA certified explosion-proof
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Length
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-040
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0.4 m
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-070
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0.7 m
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-100
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1.0 m
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-150
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1.5 m
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-200
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2.0 m
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Wetted material
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-S
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Stainless steel
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-C
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Stainless steel with Inconel calibration gas tube
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Flange
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-A
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ANSI Class 150 2 RF
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-B
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ANSI Class 150 3 RF
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-C
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ANSI Class 150 4 RF
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-E
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DIN PN10 DN50 A
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-F
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DIN PN10 DN80 A
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-G
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DIN PN10 DN100 A
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-K
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JIS 5K 65 FF
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-L
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JIS 10K 65 FF
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-M
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JIS 10K 80 FF
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-P
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JIS 10K 100 FF
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-Q
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JIS 5K 32 FF (for high temperature use)
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-R
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JPI Class 150 4 RF
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-S
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JPI Class 150 3 RF
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-W
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Westinghouse
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Auto Calibration
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-N
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Not required
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-A
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Horizontal mounting
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-B
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Vertical mounting
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Reference gas
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-E
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External connection (Instrument air)
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Gas Thread
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-R
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Rc1/4
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-T
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1/4NPT(Female)
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Connection box thread
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-M
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M20 x1.5
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-T
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1/2 NPT
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Instruction manual
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-E
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English
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-K
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Korea
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--
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-A
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Always -A
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Options
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/C
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Inconel bolt
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/CV
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Check valve
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/SV
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Stop valve
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/H
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Hood
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/SCT
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Stainless steel tag plate
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/PT
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Printed tag plate
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/C2
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NAMUR NE43 Failure alarm down-scale
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/C3
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NAMUR NE43 Failure alarm up-scale
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4.Heater Assembly
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Model
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Suffix Codes
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Description
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ZR202A
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Heater Assembly for ZR202S
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Length
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-040
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0.4 m
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-070
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0.7 m
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-100
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1.0 m
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-150
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1.5 m
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-200
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2.0 m
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Jig for change
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-A
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with Jig
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-N
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None
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-
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-A
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Always A
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