The FC8600 series is a high-performance, high-temperature oxygen probe produced by Marathon Sensors, primarily used for oxygen concentration measurement in high-temperature environments such as industrial combustion control, boilers, furnaces, and heat treatment. Below are the key features and application information for this series:

Key Features

High-temperature resistant design

Wide operating temperature range, typically withstanding extreme environments up to 1400°C (2552°F), suitable for high-temperature industries such as metallurgy, glass manufacturing, and ceramics.

2. Longevity and Stability

Utilizing Zirconia (ZrO2) sensor technology, offers superior resistance to thermal shock, maintains high-precision measurement at high temperatures, and has a significantly longer service life than conventional oxygen probes.

3. Quick Response

Optimized electrochemical units can quickly respond to changes in oxygen concentration (typically within seconds), aiding in real-time optimization of combustion efficiency.

4. Multiple installation options

Offer flange or threaded installation options, compatible with various industrial equipment interfaces (such as boiler and kiln measurement holes).

5. Signal Output Compatibility

Supports analog signals (such as 4-20mA) or digital outputs for easy connection to PLC, DCS, and other control systems.

Typical Application Scenarios

Combustion Control: Optimize air-fuel ratio to reduce fuel waste and NOx emissions.

Metal heat treatment: Monitor the furnace atmosphere to prevent workpieces from oxidation or decarburization.

Glass Furnace: Control oxygen partial pressure to ensure glass quality.

Waste Incineration: Monitor flue gas oxygen content to comply with environmental regulations.

Selection Considerations

1. Temperature and Medium

Confirm that the actual process temperature is within the probe's rated range to prevent condensation or corrosive gases from damaging the sensor.

2. Probe Length and Mounting Method

Select probe insertion depth based on equipment structure (e.g., FC8600 100 XX indicates a 100mm length).

3. Matching Transmitter

Some models require a dedicated transmitter (such as Marathon's MX series) for signal conversion and calibration.

Maintenance Recommendations

Regular calibration ensures measurement accuracy.

Avoid mechanical vibrations or sudden changes in temperature to prolong the probe's lifespan.

Check if the reference air channel is unobstructed (external reference gas source required for some models).