Fireye NXCESO2-30 Probe Assembly

The Fireye NXCESO2-30 Probe Assembly is a critical component for industrial burner management, providing continuous, real-time oxygen concentration measurement to optimize combustion efficiency. This 30-inch insertion probe utilizes a zirconia oxide sensor (planar ZrO2 dual cell) to deliver fast, accurate readings, responding to air/fuel ratio changes in under 100 milliseconds. Built for the rigors of high-temperature flue gases, it operates effectively in stack temperatures up to 850??F (454??C). The assembly features an integrated Type K thermocouple for parallel stack temperature monitoring and an onboard cooling fan to maintain internal electronics within the 45??C to 70??C operating range. Designed for seamless integration with Fireye Nexus NXF4000 and PPC4000 controllers via Modbus-RTU communications, the NXCESO2-30 oxygen probe enables precise trim control of air or fuel servos. For field serviceability, the sensor cartridge can be replaced in-situ without removing the entire probe housing from the stack, significantly reducing system downtime during scheduled maintenance.

• Enhanced Combustion Efficiency: Provides the high-speed feedback necessary for O2 trim systems to reduce fuel consumption.
• Extended Insertion Depth: The 30-inch (762mm) probe length ensures deep stack penetration for representative sampling in large industrial flues.
• Rugged Thermal Management: Features an internal fan and thermocouple to protect sensitive electronics from high-heat environments.
• Simplified Field Service: Replaceable sensor cartridges allow for quick maintenance without breaking the stack seal.
• Direct Digital Integration: Uses Modbus-RTU for reliable data transmission and automated detection by Fireye Nexus controllers.

Common Questions

What controllers are compatible with the NXCESO2-30?
This probe is specifically designed for use with the Fireye Nexus NXF4000 and PPC4000 series. It communicates via a shielded twisted pair for Modbus-RTU and requires a 24VDC power supply, typically sourced directly from the controller or an external power source for systems with multiple servos.

Can the sensor be replaced without removing the 30-inch probe?
Yes, the Fireye O2 probe is designed with a removable cartridge. Technicians can swap the zirconia sensor element in-situ, which avoids the labor of unmounting the entire assembly from the 35-381-2 mounting flange.

What is the maximum stack temperature for this assembly?
The NXCESO2-30 is rated for stack temperatures up to 850??F (454??C). For applications exceeding these temperatures, a Type 2 probe system with remote electronics may be required to prevent damage to the internal circuitry.

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.