YOKOGAWA ZR202G100SCETMEASCTF1

YOKOGAWA ZR202G100SCETMEASCTF1

The YOKOGAWA ZR202G100SCETMEASCTF1 is a high-performance integrated zirconia oxygen analyzer designed for direct in-situ measurement of oxygen concentration in combustion flue gases and mixed gas streams. Part of the EXAxt ZR202 series, this integrated-type analyzer combines detector and converter into a single unit, eliminating the need for sampling systems and significantly reducing installation costs. The ZR202G series has become an industry standard for boiler combustion optimization and emission monitoring across power generation, petrochemical, and industrial furnace applications.

Key Technical Specifications

The ZR202G platform delivers industry-leading measurement performance:

Measured Object: Oxygen concentration in combustion exhaust gas and mixed gas (non-flammable gases)-5

Measurement System: Zirconia system with solid electrolyte sensor-5

Measuring Range: 0.01 to 100 vol% O₂, field-configurable within 0–5 vol% through 0–100 vol% O₂ ranges (1 vol% increments)-5

Output Signal: 4–20 mA DC isolated with 550 Ω maximum load resistance-5

Digital Communication: HART protocol (250–550 Ω loop load) supporting multi-drop mode for up to 15 devices-5

Display Range: 0 to 100 vol% O₂ on integrated LCD-5

Warm-up Time: Approximately 20 minutes (reference gas dependent)-5

Repeatability: ±0.5% of max set range value for 0–25 vol% O₂; ±1% for ranges up to 100 vol% O₂-5

Linearity: ±1% of max set range (<0–25 vol% O₂ at ±4.9 kPa); ±3% (25–50 vol% O₂ at ±0.49 kPa); ±5% (50–100 vol% O₂ at ±0.49 kPa)-5

Sample Gas Temperature: 0 to 700°C (probe only). For temperatures 600–700°C, Inconel cell bolts are required. For 700–1400°C, high-temperature probe adapter (ZO21P) is required-

Sample Gas Pressure: –5 to +250 kPa-

Minimum Operating Temperature: –20°C-

Maximum Operating Temperature: 700°C (probe only)-

Probe Insertion Length Options: 0.4 m, 0.7 m, 1.0 m, 1.5 m, 2.0 m, 2.5 m, 3.0 m-

Power Supply: 100–240 V AC, 50/60 Hz, 300 VA max-23

Ambient Temperature Range: –20 to +55°C-23

Enclosure Protection: IP66 (dust-tight and protected against heavy seas/powerful water jets)-23

Safety Standards: EN 61010-1, EN 61010-2-030, UL 61010-1, CSA C22.2 No. 61010.1 certified-23

EMC Standards: EN 61326-1 Class A Table 2 (industrial locations), EN 61326-2-3, EN 61000-3-2-23

Model Code Breakdown: YOKOGAWA ZR202G100SCETMEASCTF1

The complete model code decodes as follows:

Note: YOKOGAWA offers other ZR202G configurations including ZR202G070, ZR202G150, ZR202G200, ZR202G250, and ZR202G300 variants for different insertion length requirements. For explosion-proof applications, the ZR202S model is available with ATEX (Ex d IIB+H2 T2 Gb), FM, CSA, and IECEx certifications-24.

Application Industries & Use Cases

The ZR202G series is widely deployed across multiple industrial sectors for combustion optimization and emission compliance:

Power Generation: Package boilers, utility boilers, and heat recovery steam generators (HRSG) — optimizing air-fuel ratios reduces fuel consumption and NOx emissions-24

Petrochemical & Refining: Process heaters, reformers, and cracking furnaces — maintaining precise oxygen control prevents coking and extends equipment life

Cement & Lime Production: Rotary kilns and pre-calciner systems — oxygen trim control improves thermal efficiency

Steel & Metals: Reheating furnaces, annealing lines, and ladle pre-heaters

Pulp & Paper: Recovery boilers and lime kilns — oxygen measurement enables black liquor combustion optimization

Ceramics & Glass: Kiln atmosphere control for product quality consistency-32

Pharmaceutical & Food Processing: Package boiler efficiency optimization for steam generation

Why Choose the YOKOGAWA ZR202G Platform?

The ZR202G series delivers exceptional value through several key engineering advantages:

Lower Total Cost of Ownership: Integral design minimizes tubing, wiring, and conduit requirements, significantly reducing installation costs compared to separate-type systems

Field-Replaceable Heater Assembly: The zirconia cell heater can be replaced on-site without returning the instrument to factory, reducing downtime and maintenance costs

High-Reliability Zirconia Sensor: Long-life solid electrolyte sensor with excellent stability under demanding combustion conditions

Infrared Switch Operation: Three infrared push buttons allow local configuration and calibration without opening the enclosure, maintaining IP66 integrity

HART Digital Communication: Enables remote configuration, real-time process variable access, and diagnostic monitoring from control room or handheld communicator

Automatic Calibration Support: Compatible with ZR20H automatic calibration unit for scheduled zero/span calibration, reducing manual intervention

Dual Functionality: Can be configured as either an oxygen analyzer (0–100 vol% O₂) or high-temperature humidity analyzer (0–100 vol% H₂O), adding measurement flexibility

Self-Diagnostics: Sensor resistance check function monitors zirconia cell degradation, providing predictive maintenance alerts

Dimensions, Installation & Accessories

Detector Weight: Approximately 4.5 kg (1.0 m probe)

Flange Standard: ANSI Class 150, 2″ RF SUS304

Probe Protector: ZO21R-L recommended for horizontal installations with probe length ≥2.5 m to support the probe weight-

Flow Setting Unit: ZA8F for manual calibration gas flow control

Automatic Calibration Unit: ZR20H for fully automated zero/span calibration sequencing

Dust Filter: K9471UA protects the sensor in dusty flue gas environments

Mounting Orientation: Probe can be mounted horizontally or vertically; ensure probe tip is positioned in representative gas flow zone with adequate straight run

Compliance & Certification

The ZR202G platform complies with global standards including CE Marking (EN 61326-1, EN 61010-1), Korean KC certification, Australian RCM (C-Tick), and meets Pressure Equipment Directive (PED) requirements. For hazardous area installations, the ZR202S variant provides explosion-proof certification

Ordering Information

When specifying the ZR202G analyzer, provide:

Complete model code (e.g., ZR202G100SCETMEASCTF1)

Probe insertion length: 0.4 m, 0.7 m, 1.0 m, 1.5 m, 2.0 m, 2.5 m, 3.0 m

Process flange standard and rating (ANSI, JIS, DIN)

Reference gas method (natural convection or instrument air)

Desired measurement range and units (vol% O₂)

Tag number (up to 16 characters) for nameplate marking

Optional accessories: ZO21R-L probe protector, ZA8F flow setting unit, ZR20H automatic calibration unit, K9471UA dust filter