Yokogawa Zirconia Oxygen Analyzer ZR202S-D-040-S-B-N-E-T-M-E-A/CV/H
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.
Features
Yokogawa Zirconia Oxygen Analyzer ZR202S-D-040-S-B-N-E-T-M-E-A/CV/H
• 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
General Specifications
Yokogawa Zirconia Oxygen Analyzer ZR202S-D-040-S-B-N-E-T-M-E-A/CV/H
|
Measurement object
|
Oxygen concentration in combustion exhaust gas and mixed gas.
|
|
Measurement system
|
Zirconia system
|
|
Display
|
6-digit LCD
|
|
Switch
|
Three optical switches
|
|
Explosion-proof Approval
|
ZR202S-A (ATEX); EEx d IIB + H2
|
|
ZR202S-B (FM); Class I, Division1, Groups B, C and D
|
|
ZR202S-C (CSA); Class I, Division1, Groups B, C and D
|
|
ZR202S-D (IECEx); Ex d IIB + H2 T2
|
|
Measurement range
|
0.01 to 100 vol% O2
|
|
Setting range
|
Any setting in the range of 0 - 5 vol%O2 to 0 - 100 vol%O2 (in 1 vol% O2), or partial range.
|
|
Output signal
|
4 to 20 mA DC, one point (maximum load resistance 550Ω)
|
|
Digital communication (HART)
|
250 to 550Ω, depending on number of field devices connected to the loop (multi-drop mode)
|
|
Sample gas pressure
|
- 5 to + 5 kPa
|
|
No pressure fluctuation in the furnace should be allowed.
|
|
Sample gas temperature
|
0 to 700°C. High Temperature service greater than 700°C is not available.
|
|
Probe length
|
0.4, 0.7, 1.0, 1.5, 2.0 m
|
|
Contact output
|
Two points (one is fail-safe, normally open)
|
|
Contact input
|
Two points
|
|
Calibration
|
Method; zero/span calibration
|
|
Calibration mode; automatic, semi-automatic and manual (with optical switch)
|
|
Construction
|
Heater and thermocouple replaceable construction, equivalent to NEMA4X/IP66
|
|
Ambient temperature
|
-20 to +55°C (- 5 to +70°C on the case surface)
|
|
Reference Gas System
|
Instument ; 50 kPa +the pressure inside the furnace,
|
|
Consumption ; Approx. 1.5 Nl/min
|
|
Wiring Connection
|
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)
|
|
Power Supply
|
85 to 264 V AC, 45 to 66 Hz
|
Performance
Yokogawa Zirconia Oxygen Analyzer ZR202S-D-040-S-B-N-E-T-M-E-A/CV/H
|
Repeatability
|
±0.5% Maximum value of set range
|
|
Linearity
|
±1% Maximum value of set range
|
|
Drift
|
±2% Maximum value of set range/month
|
|
Response time
|
90% response within 5 sec
|
Model and Suffix Codes
Yokogawa Zirconia Oxygen Analyzer ZR202S-D-040-S-B-N-E-T-M-E-A/CV/H
ZR202S-A, ZR202S-B, ZR202S-C, ZR202S-D
Model
ZR202S - - - - - - - - - - - Integrated type Explosion-proof Zirconia Oxygen Analyzer
Explosion-proof Approval
-A - - - - - - - - - - - ATEX certified flameproof (*11)
-B - - - - - - - - - - - FM certified explosion-proof
-C - - - - - - - - - - - CSA certified explosion-proof
-D - - - - - - - - - - - IECEx certified flameproof (*12)
Length
-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 (*1)
-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)
-R - - - - - - - - - - JPI Class 150 4 RF SUS304 (JIS)
-S - - - - - - - - - - JPI Class 150 3 RF SUS304 (JIS)
-W - - - - - - - - - - Westinghouse
Automatic Calibration
-N - - - - - - - - - - - Not required
-A - - - - - - - - - - - Horizontal mounting (*5)
-B - - - - - - - - - - - Vertical mounting (*5)
Reference gas
-E - - - - - - - - - - External connection (Instrument air) (*8)
Gas Thread
-R - - - - - - - - - - Rc1/4
-T - - - - - - - - - - 1/4NPT(Female)
Connection box thread
-M - - - - - - - - - - M20 x1.5
-T - - - - - - - - - - 1/2 NPT (*9)
Instruction manual
-E - - - - - - - - - - English
-A - - - - - - - - - - Always -A
Options
Valves
/C, Inconel bolt (*2)
/CV, Check valve (*3)
/SV, Stop valve (*3)
/H, Hood (*6)
/SCT, Stainless steel tag plate (*4)
Tag plates
/PT, Printed tag plate (*4)
NAMUR NE43 compliant
/C2, Failure alarm down-scale: Output status at CPU failure and hardware error is 3.6 mA or less (*13)
/C3, Failure alarm up-scale: Output status at CPU failure and hardware error is 21.0 mA or more (*13)
*1 The thickness of the flange depends on its dimensions.
*2 Inconel probe bolts and U shape pipe are used. Use this option for high temperature use (ranging from 600 to 700°C).
*3 Specify either /CV or /SV option code.
*4 Specify either /SCT or /PT option code.
*5 No need to specify the option codes, /CV and /SV, since the check valves are provided with the automatic calibration unit.
*6 Sun shield hood is still effective even if scratched. Hood is necessary for outdoor installation out of sun shield roof.
*7 Recommended if sample gas contains corrosive gas like chlorine.
*8 Piping for reference gas must be installed to supply reference gas constantly at a specified flow rate.
*9 When selecting code -B (FM certified explosion-proof) or -C (CSA certified explosion-proof), select code -T(1/2 NPT).
*10 Confirm inside diameter of pipe attached to customer’s flange in case that -A or -E is selected.
*11 Certified cable glands that meet or exceed the requirements for EExd II B+H2 IP66, provide at least 6 threads engaged when installed, and resist heat so that they can be used in the operating environment, should be used.
*12 Certified cable glands that meet or exceed the requirements for Exd II B+H2 T2, Ex tD A21 IP66 T300°C, provide at least 6 threads engaged when installed, and resist heat so that they can be used in the operating environment, should be used.
*13 Output signal limits: 3.8 to 20.5 mA. Specify either /C2 or /C3 option code.
