Calcination furnace FMU-21

thermalanalysissintering

Product Overview
Labotemp Muffle Furnace FMU-21 is an industrial-grade high-temperature electric muffle furnace designed for thermal processing, material analysis, sintering, ash determination and heat-treatment tasks in research laboratories, universities, industrial QA/QC and mining operations. Maximum operating temperature: 1700°C; recommended continuous working temperature: 1650°C. The 6.7 L chamber uses high-temperature-resistant polycrystalline mullite fiber insulation to improve thermal efficiency, reduce heat loss and shorten heat-up time. High-purity silicon molybdenum heating elements and intelligent PID control ensure uniform temperature distribution and temperature accuracy of ±1°C.

Design & Safety
FMU-21 is built for continuous laboratory and industrial use with a programmable microcomputer controller offering fixed-value and multi-step program modes for complex heating profiles. The exterior is cold-rolled steel with vacuum-formed insulation and a double-shell ventilation design to lower external surface temperature and enhance operator safety. Protection features include over-temperature alarm, leakage protection, sensor fault detection and automatic power cutoff when the door is opened.

Why Choose Labotemp Muffle Furnace FMU-21?

• 1700°C capability for advanced sintering, calcination and high-temperature material tests.
• Energy-efficient polycrystalline mullite fiber chamber reduces heat loss and operating costs.
• Comprehensive safety protections including alarms and automatic power interruption.

Features

• Advanced safety protection systems.
• Excellent temperature uniformity via high-purity silicon molybdenum heating elements.
• Start/stop heating button for simple operation.
• Built-in temperature correction and overshoot self-adjustment for process stability.
• Controller options: LED, LCD or 7-inch touchscreen programmable controller depending on configuration.
• Touchscreen option provides temperature curve display and U-disk data storage.
• Mirror-finished stainless-steel furnace mouth for durability and resistance to discoloration.
• Quick-access furnace design for easy replacement of heating elements.
• Double-shell structure with air-jacket insulation and ventilation channels to reduce outer surface temperature.

Applications

• High-temperature material research, ceramic sintering, metallurgical analysis and ash content determination.
• Refractory material testing and heat-treatment processes up to 1700°C.
• Suitable for university labs, research institutes, industrial quality-control and mining sample preparation requiring precise programmable temperature control and reliable safety protection.

Technical Specifications

• Capacity: 6.7 L
• Temperature Range: 1700°C (recommended continuous 1650°C)
• Power Supply: AC220V / 50Hz
• Heating Power: 9 kW
• Temperature Accuracy: ±1°C
• Temperature Resolution: 1°C
• Temperature Rise Time: ≤140 min
• Heating Element: High-temperature resistant silicon molybdenum rod
• Temperature Control Mode: Intelligent microcomputer PID control
• Setting Method: Standard: 4-key; P Type: 5-key; PL Type: touch operation
• Timer: Standard: 0–9999 min; P Type: 0–99 h 59 min; PL Type: 0–9999 min
• Operation Mode: Fixed-value or program running
• Sensor: Type B thermocouple
• Chamber Material: High-temperature resistant polycrystalline mullite fiber
• Exterior Material: Cold-rolled steel plate with surface spray treatment
• Chamber Size (W×D×H): 300 × 150 × 150 mm
• Net Weight: 110 kg
• Gross Weight: 130 kg
• Packing Dimensions (W×D×H): 910 × 985 × 1310 mm