"Beijing 'Thermocouple Marathon Carbon King (Carbon King) Oxygen Probe TW08010, Specialized Heat Treatment Oxygen Probe', the following is an analysis and usage recommendation for this product:"
1. Product Overview
Model: TW08010 (May be a custom or internal manufacturer's code, check brand manual for confirmation).
Application: Designed specifically for heat treatment processes such as carburization, carbonitriding, and atmosphere control, it is used for real-time monitoring of the furnace's oxygen potential (or carbon potential) to ensure process accuracy.
Core Components: Thermocouple + Oxygen Sensor (typically zirconia-based solid electrolyte).
2. Key Features
Marathon Carbon King Technology: May refer to:
Long-life design: Resists high temperatures and thermal shock, suitable for continuous long-term operation.
Rapid Response: Optimized probe structure for enhanced oxygen partial pressure detection speed.
Carbon Potential Calculation Compatibility: Carbon potential is indirectly calculated through oxygen electrochemical potential (requires coordination with control instrument algorithms).
Thermocouple Integration: May include K-type or S-type thermocouples, synchronously measuring temperature, and compensating for oxygen sensor signals.
3. Technical Specifications (to be verified with manufacturer's data)
| Item | Typical Value |
| --------------| -------------------- -|
| Measurement Range | Oxygen Potential: 0.1 - 1000 ppm O2 (or corresponding carbon potential 0.1 - 1.5% C) |
| Operating Temperature | 600 - 1200°C (depending on model) |
Response Time | <5 seconds (T90)
Zirconia Tube + High-Temperature Alloy Sheath
Output Signal | Millivolt Oxygen Potential + Thermocouple mV
4. Application Scenarios
Carbonitriding/Quenching: Monitor the enriched carbon atmosphere to prevent over-carburization or under-carburization.
Bright Annealing: Maintain low oxygen partial pressure to prevent metal oxidation.
Sintering Process: Control the composition of protective gas to ensure product quality.
5. Usage and Maintenance Suggestions
Installation:
Ensure airtightness to prevent air leakage from affecting the reading.
Flow rate of reference gas (such as air) must be stable (usually 20-50 mL/min).
Calibration:
Regularly calibrate the oxygen potential using standard gas (such as known CO/CO2 mixtures).
Thermocouples require ice-point compensation or dry-bulb calibration.
Common Reasons:
Signal Drift: May be due to reference gas contamination or zirconia aging, requires cleaning or replacement.
Response Delay: Check for probe carbon buildup or blockage, and clean with specialized tools if necessary.
6. Cautionary Notes
Compatibility: Confirm the probe and controller (e.g., Eurotherm, Honeywell) interfaces are compatible.
Environmental Restrictions: Avoid pollutants such as sulfur and lead, which may cause sensor poisoning.
Alternative Model: If TW08010 is discontinued, consult the manufacturer for recommended equivalent models (such as TW08020). The performance of the heat treatment oxygen probe is highly dependent on proper use, and regular maintenance is crucial for ensuring accuracy.
