Use Rosemount 90003315-V2 Oxymitter 4000 Equipment to Support In Situ Flue Gas Oxygen Measurement, Combustion Optimization and Boiler Efficiency Monitoring

Rosemount 90003315-V2 is a purchase reference associated with Rosemount Oxymitter 4000 oxygen-analysis equipment. The Oxymitter 4000 platform uses zirconium oxide sensing technology to measure oxygen directly in flue gas. Continuous oxygen information helps boiler and furnace operators balance fuel and combustion air, identify inefficient operation and support stable process control without relying only on intermittent manual samples.

Why measure oxygen directly in the flue-gas stream

Too much excess air can waste heat and reduce efficiency, while insufficient air can produce incomplete combustion, unstable flames and higher carbon monoxide. An in situ oxygen probe provides a continuous measurement close to the process. When it is correctly installed, calibrated and integrated, the signal can guide burner adjustment, trim control and maintenance decisions in boilers, furnaces, heaters and other combustion systems.

Oxymitter 4000 platform characteristics

• Zirconium oxide sensing for direct in situ oxygen measurement in combustion flue gas.

• Probe-mounted or remotely arranged electronics, depending on the selected system configuration.

• Advanced diagnostics that can indicate when calibration or maintenance attention is recommended.

• Optional Xi electronics, local display and digital communication choices across the product family.

• Replaceable and serviceable probe arrangements intended to support long-term plant maintenance.

Emerson lists Oxymitter 4000 configurations for process temperatures up to 700 °C, with additional application arrangements available for specific duties. These are product-family capabilities. The exact limits and approvals of reference 90003315-V2 must be confirmed from its nameplate, serial record and configuration documents.

Define the probe installation before requesting a quotation

Record the duct or stack location, gas temperature, normal oxygen range, pressure, dust loading, sulfur content and accessibility. Confirm the probe insertion length, mounting flange, orientation and clearance for removal. The sensing tip should be positioned in a representative gas stream and protected from direct flame contact, severe particulate impact, condensation and air leakage that could bias the oxygen reading.

Replacement questions for Rosemount 90003315-V2

• Is the reference for a complete analyzer, replacement probe, electronics assembly or configured accessory package?

• Does the installation use integral electronics, remote electronics or an Xi interface?

• What probe length, mounting connection and hazardous-area approval are required?

• Which analog or digital outputs must match the existing control system?

• Are calibration gas hardware, filters, cables, adapters or mounting accessories included?

Commissioning and ongoing measurement confidence

After installation, verify wiring, grounding, purge or reference-air requirements and the control-system scaling. Perform the manufacturer-recommended calibration or validation using suitable test gas, then confirm alarm and diagnostic behavior. Trend oxygen against firing rate, fuel changes and other combustion indicators. A drifting or implausible reading should trigger inspection for leaks, ash buildup, probe damage, calibration-gas problems or process changes before control adjustments are made.