Home » Products » NOx Sensor » High-Resolution NOx Sensor for Stationary Engines (5WK9 6652B)
Features of NOx Sensor-5WK9 6652B
Features of NOx Sensor-5WK9 6652B Features of NOx Sensor-5WK9 6652B
Features of NOx Sensor-5WK9 6652B Features of NOx Sensor-5WK9 6652B

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High-Resolution NOx Sensor for Stationary Engines (5WK9 6652B)

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The High-Resolution NOx Sensor (5WK9 6652B) is a specialized solution designed for stationary diesel and gas engines, providing ultra-precise NOx measurement (±1% accuracy) for emissions compliance and process optimization.
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Overview


Engineered with a high-sensitivity sensor element and extended-range calibration, this sensor monitors NOx from 0-10,000 ppm, making it ideal for large generators, marine auxiliary engines, and industrial boilers. The rugged cast iron housing and dual-heater design ensure reliability in constant-load and cyclic operation.


Features


Extended Range & Resolution

Wide Measurement Span: 0-10,000 ppm NOx with 1 ppm resolution, supporting both low-emission (≤50 ppm) and high-load (≥5,000 ppm) applications.

High-Sensitivity Mode: Automatically switches to low-range calibration for precise control of lean NOx traps (LNTs) in gas engines.


Stationary Engine Optimization

Constant-Load Stability: Maintains accuracy within ±1.5% over 20,000 hours of continuous operation, critical for prime power generators.

Vibration-Isolated Design: Rubber-mounted sensor element reduces stress from engine oscillations in reciprocating machinery.


Heavy-Duty Construction

Cast Iron Housing: Withstands corrosive exhaust gases (SOx, Cl⁻) in biomass and waste-to-energy applications, outlasting standard sensors by 30% in harsh environments.

Dual-Heater Redundancy: Primary and secondary heaters ensure operation even if one fails, with automatic failover for 24/7 reliability.


Industrial-Grade Integration

Modbus RTU Compatibility: Supports industrial communication protocols for integration with SCADA systems, enabling remote monitoring and data logging.

Calibration Flexibility: User-configurable zero/span points via PC software, adapting to unique engine configurations and fuel types.


Application


Power Generation:

Natural gas generators (1-10 MW): Ensures compliance with EPA New Source Performance Standards (NSPS) for NOx ≤ 0.15 g/bhp-hr.

Diesel standby generators (500-2,000 kVA): Provides real-time NOx data for demand-controlled ventilation systems in data centers.

Industrial Processes:

Boilers and furnaces: Monitors NOx in combustion processes for cement plants and refineries, supporting ISO 14001 and EU BREF compliance.

Marine Auxiliaries:

Cruise ship generators (2,000-5,000 kVA): Meets IMO Tier III in port operations, with salt-resistant coatings for marine environments.


FAQ


Q: Can it measure NOx in biogas-fired engines?

A: Yes, calibrated for biogas (methane-rich) fuels, with automatic correction for high humidity and siloxane contamination.

Q: What is the sensor’s response time in constant-load operation?

A: Maintains <100ms response to slow NOx changes, ideal for steady-state engine control in cogeneration systems.

Q: Does it require a separate data acquisition system?

A: No, integrates directly with engine control panels via Modbus or CAN, reducing hardware costs for industrial setups.

Q: How is the cast iron housing protected against corrosion?

A: Internally coated with aluminized steel and externally painted with heat-resistant epoxy, passing 1,500-hour salt spray testing.


Nox Detection Range

0~2500ppm O2:-12%~21%

Nox Accuracy

0~100ppm:±10ppm;100~500ppm:±10%;
500~1500ppm:±15%;1500~2500ppm:±30%

O2 Accuracy

0%~5%:±0.25%;5%~21%:±5%

Light-off Time

Can reach detection state in 160s

Response Time

T(10-90%):Nox<5300ms T(10-90%):O2-4900ms

Supply Voltage

12V,24V in universal version

Design Life

6000h or 350000km


NOx Sensor for Engines NOx Sensor for Engines


ABOUT US

Zhejiang Kreation Electronic Technology Co.,Ltd. is a smart sensor company invested and founded by E-Quality intelligent Technology Co., Ltd. (E-Quality for short).

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Tel: +86-15312270222
Email: jack.song@kreationtec.com
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