Yokogawa ZR22A-150-A-A

Digital guide

Product Introduction: A rugged in-situ zirconia oxygen detector probe designed for direct measurement of oxygen concentration in high-temperature process gases. The 1.5 m insertion length (150 suffix) suits large-diameter pipes and furnaces, with a modular design enabling easy maintenance and compatibility with Yokogawa ZR200 series transmitters for reliable, real-time oxygen monitoring in combustion and industrial processes.

Technical Specifications:

Measurement Principle: Zirconia electrochemical cell (Nernst equation)

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Detailed content

Insertion Length: 1.5 m (150 suffix)
Process Temperature: 700°C to 1400°C (continuous); up to 1871°C with ZR22P extraction adapter
Process Pressure: Up to 2.5 bar (absolute); pressure compensation optional
Oxygen Range: 0.001 vol% to 21 vol% (configurable)
Accuracy: ±2% of reading (at 1000°C, 1 bar)
Response Time: ≤5 s (T90, at 1000°C)
Reproducibility: ±0.5% of full scale
Sensor Material: Yttria-stabilized zirconia (YSZ) with platinum electrodes
Protection Tube: 316L stainless steel (standard); ceramic optional for corrosive environments
Connection: M27 × 2 thread (process connection)
Certifications: CE, ATEX Ex ia IIC T6 (intrinsically safe)

Functional Features:
In-situ measurement eliminates sample extraction, reducing response time and maintenance
Modular design allows field replacement of zirconia cell and heater assembly without probe removal
High-temperature stability ensures reliable performance in furnace and boiler combustion control
Compatible with ZR202/ZR204 transmitters for remote configuration, calibration, and diagnostics
Rugged construction resists thermal shock, vibration, and chemical corrosion
Low power consumption for battery-powered or remote installations

Application Scenarios: Power plant boilers, industrial furnaces, incinerators, petrochemical heaters, and glass manufacturing where real-time oxygen concentration measurement optimizes combustion efficiency and reduces emissions.