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Common faults and solutions of laboratory muffle furnace

Time:2025-06-23 Popularity: 2

1. Temperature Inconsistencies

Problem: Uneven heating or failure to reach target temperatures

Causes:

  • Worn heating elements

  • Faulty temperature sensors

  • Improper calibration

  • Insufficient preheating time

Solutions:

✔ Replace aging heating elements (typically every 2-3 years with heavy use)

✔ Calibrate thermocouples annually using NIST-traceable standards

✔ Allow 20-30 minutes preheat for temperature stabilization

✔ Rotate samples periodically for even exposure

2. Excessive Energy Consumption

Problem: Sudden spikes in power usage

Causes:

  • Deteriorating insulation

  • Door seal degradation

  • Oversized furnace for application

  • Frequent door openings

Solutions:

▲ Replace ceramic fiber insulation when efficiency drops >15%

▲ Install new high-temperature door gaskets annually

▲ Right-size your furnace capacity to sample volume

▲ Minimize door openings during runs

The above answers are for reference only. If you have any questions, please feel free to ask our staff at any time

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