YOKOGAWA ZR402GMEEA
| Model： ZR402GMEEA Manufacturer: YOKOGAWA Size: 20*20*30cm Detail Specification: Vortex Flowmeter Comment:Carton Shipping Weight:4.5Kg Estimated Lead Time: 12 Weeks Payment：T/T HS CODE：9026201090 Unit price (EXW): 3300US dollars Delivery time: 12 – 16 weeks
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product details
YOKOGAWA ZR402GMEEA
The YOKOGAWA ZR402GMEEA is a high-performance separate-type zirconia oxygen analyzer converter, engineered for precise monitoring and control of oxygen concentration in industrial combustion processes. Developed by Yokogawa Electric Corporation, this converter serves as the intelligent core of the EXAxt ZR series oxygen analysis system, working in conjunction with the ZR22G detector to deliver reliable, real-time oxygen measurements in demanding environments.
The YOKOGAWA ZR402GMEEA is specifically designed for combustion control applications across energy-intensive industries including steel manufacturing, electric power generation, petrochemical processing, ceramics production, pulp and paper, food processing, and textiles-53. By enabling complete combustion monitoring, the ZR402G series contributes significantly to energy conservation and environmental protection, helping reduce CO₂, SOx, and NOx emissions-13.
Model Code Breakdown: Understanding ZR402GMEEA
The model designation ZR402GMEEA follows Yokogawa’s systematic suffix code structure. Here is the detailed interpretation:
| Code Position | Designation | Meaning |
| ZR402G | Base Model | Separate-type Zirconia Oxygen Analyzer Converter |
| M | Cable Entry | M20 × 1.5 mm conduit connection |
| E | Display Language | English display (LCD touchscreen interface) |
| E | Electrical Connection | Standard electrical termination |
| A | Optional Specification | Standard configuration without additional options |
The YOKOGAWA ZR402GMEEA is a member of the broader ZR402G product family, which includes variants such as ZR402G-T-E-E-A, ZR402G-P-E-E-A, ZR402G-M-E-E-A/SCT, and ZR402G-M-E-E-A/C2/H-1. The “M” suffix specifies M20 cable entry threads, while the “-E” indicates English-language display firmware. The final “A” denotes the base specification without humidity analyzer configuration (/HS option) or special certifications.
Key Technical Specifications
General Specifications
The ZR402G separate-type converter features an intuitive LCD touchscreen display measuring 320 × 240 dots, enabling straightforward parameter configuration, calibration management, and oxygen concentration trend visualization-7-53. The display supports various functional screens including setting displays, calibration displays, and real-time trend graphs.
Input/Output Specifications
| Parameter | Specification |
| Analog Output | Two points, 4–20 mA DC, isolated |
| Maximum Load Resistance | 550 Ω |
| Contact Output | Four points (one fail-safe, normally open) |
| Contact Input | Two points |
| Auto-calibration Output | Two points (for dedicated auto-calibration unit) |
| Digital Communication | HART protocol (standard), 250–550 Ω |
Power Requirements
| Parameter | Specification |
| Rated Voltage | 100–240 V AC |
| Acceptable Range | 85–264 V AC |
| Rated Frequency | 50/60 Hz |
| Acceptable Frequency Range | 45–66 Hz |
| Power Consumption | Max. 300 W; approx. 100 W for ordinary use |
Environmental Specifications
| Parameter | Specification |
| Ambient Temperature (Operation) | –20 to +55 °C |
| Storage Temperature | –30 to +70 °C |
| Ambient Humidity | 0–95% RH (non-condensing) |
| Installation Altitude | 2000 m or less |
| Installation Category (IEC 1010) | Category II |
| Pollution Degree (IEC 1010) | Degree 2 |
| Enclosure Protection | Equivalent to NEMA 4X / IP66 (outdoor installation) |
| Case Material | Aluminum alloy |
| Case Color | Door: Moss green (Munsell 0.6GY3.1/2.0); Case: Off-white |
Measurement Performance
The ZR402G series delivers exceptional measurement accuracy and responsiveness:
| Parameter | Specification |
| Measurement Object | Oxygen concentration in combustion exhaust gas and mixed gas |
| Measurement System | Zirconium oxide (zirconia) sensor |
| Oxygen Concentration Range | 0.01–100 vol% O₂ |
| Setting Range | Any range from 0–5 vol% O₂ to 0–100 vol% O₂ |
| Display Range | 0–100 vol% O₂ |
| Repeatability | ±0.5% of max. value (0–25 vol% O₂); ±1% of max. value (25–100 vol% O₂) |
| Linearity | ±1% of max. value (0–25 vol% O₂); ±3% (25–50 vol%); ±5% (50–100 vol%) |
| Drift | ±2% of max. value per month (zero and span) |
| Response Time | 90% response within 5 seconds |
| Warm-up Time | Approximately 20 minutes |
Detector Compatibility and Probe Specifications
The YOKOGAWA ZR402GMEEA is designed to pair with the ZR22G separate-type zirconia oxygen detector. Key detector specifications include:
| Parameter | Specification |
| Sample Gas Pressure | –5 to +250 kPa (pressure compensation option required above +5 kPa) |
| Sample Gas Temperature (Probe only) | 0–700 °C |
| Sample Gas Temperature (with High-Temperature Probe Adapter) | 700–1871 °C |
| Probe Length Options | 0.15, 0.4, 0.7, 1.0, 1.5, 2.0, 2.5, 3.0, 3.6, 4.2, 4.8, 5.4 m |
| Probe Material | SUS 316 (JIS) |
| Reference Gas Supply Methods | Natural air convection, instrument air, pressure compensated |
| Maximum Distance between Probe and Converter | 300 m (when using 1.25 mm² cable or equivalent) |
| Detector Construction | Heater and thermocouple replaceable; non-explosion-proof |
| Detector Protection | Equivalent to NEMA 4X / IP66 |
| Probe Ambient Temperature | –20 to +150 °C |
Safety and Compliance
The ZR402G converter complies with major international safety and EMC standards:
Safety: Conforms to EN 61010-1:1993; CSA C22.2 No.1010-1 certified; UL 3111-1 certified
EMC: Conforms to EN 61326:1998
Wiring Connections: G1/2, Pg13.5, M20 × 1.5 mm, 1/2 NPT (eight conduit holes)
Installation Methods: Panel mounting, wall mounting, or 2-inch pipe mounting
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