The FC8600 series is a high-performance, high-temperature oxygen probe manufactured by Marathon Sensors. It is primarily used for measuring oxygen concentration in high-temperature environments such as industrial combustion control, boilers, furnaces, and heat treatment processes. 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, it boasts strong resistance to thermal shock and maintains high-precision measurements at high temperatures, significantly outperforming standard oxygen probes in lifespan.

3. Quick Response

The optimally designed electrochemical unit can quickly reflect changes in oxygen concentration (typically with a response time in the seconds range), helping to optimize combustion efficiency in real time.

4. Various installation options

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

5. Signal Output Compatibility

Supports analog signals (such as 4-20mA) or digital outputs, facilitating connection to PLCs, DCSs, 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 oxidation or decarburization of workpieces.

Glass Melting 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

Verify that the actual process temperature is within the probe's specified 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 length of 100mm).

3. Companion 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 temperature changes to prolong the probe's lifespan.

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