Labotemp Muffle Furnace FMU-23 is a compact high-temperature laboratory muffle furnace engineered for precision sintering, ceramic research, metal material testing, and advanced composite processing requiring stable thermal performance up to 1700°C. Built around premium 1800-grade MoSi2 heating rods with excellent high-temperature oxidation resistance, this furnace delivers consistent and clean heat treatment in an 8-litre chamber (200×200×200mm). The high-purity ultra-clean alumina polycrystalline fiber insulation, vacuum-formed for exceptional chemical stability, effectively prevents sample contamination and ensures sintering purity across critical research and industrial workflows.
The dual-carbon shell air-cooled structure with built-in forced convection maintains the furnace surface within room temperature +45°C, ensuring operator safety during continuous high-temperature operation. A 50-segment programmable digital PID intelligent control system paired with precision B-type thermocouples delivers ±1°C temperature accuracy and repeatable thermal profiles for complex research protocols. With 5kW single-phase power supply and optional gas inlet/outlet, exhaust port, touchscreen, and RS485 communication interface, the FMU-23 supports both standard and atmosphere-controlled sintering environments.
Why Choose Labotemp Muffle Furnace FMU-23?
✓ Extreme temperature capability: MoSi2 heating rods enable stable continuous operation up to 1600°C with 1700°C peak performance
✓ Contamination-free sintering: Vacuum-formed alumina fiber chamber ensures chemical stability and sample purity at high temperatures
✓ Precise programmable control: 50-segment PID controller with B-type thermocouples delivers ±1°C accuracy for repeatable results
| Technical Specifications | |
|
Maximum Temperature : 1700 °C Maximum Temperature |
1700 °C |
|
Continuous Operating Temperature : ≤ 1600 °C Continuous Operating Temperature |
≤ 1600 °C |
|
Heating Element : Premium 1800-grade MoSi₂ (Silicon Molybdenum) Rods Heating Element |
Premium 1800-grade MoSi₂ (Silicon Molybdenum) Rods |
|
Temperature Sensor : B-Type Thermocouple Temperature Sensor |
B-Type Thermocouple |
|
Temperature Control : 50-Segment Programmable Digital PID Controller Temperature Control |
50-Segment Programmable Digital PID Controller |
|
Temperature Accuracy : ±1 °C Temperature Accuracy |
±1 °C |
|
Chamber Insulation : High-Purity Ultra-Clean Alumina Polycrystalline Fiber (Vacuum Formed) Chamber Insulation |
High-Purity Ultra-Clean Alumina Polycrystalline Fiber (Vacuum Formed) |
| Electrical Performance | |
|
Power Supply : 220V 50/60Hz Power Supply |
220V 50/60Hz |
|
Rated Power : 5 kW Rated Power |
5 kW |
|
Phase : Single Phase Phase |
Single Phase |
| Chamber & Construction | |
|
Inner Chamber Dimensions (D × W × H) : 200 × 200 × 200 mm Inner Chamber Dimensions (D × W × H) |
200 × 200 × 200 mm |
|
Chamber Capacity : 8 Liters Chamber Capacity |
8 Liters |
|
Outer Dimensions (D × W × H) : 620 × 600 × 920 mm Outer Dimensions (D × W × H) |
620 × 600 × 920 mm |
|
Construction : Dual-Carbon Shell with Built-in Forced Air Cooling Construction |
Dual-Carbon Shell with Built-in Forced Air Cooling |
|
Surface Temperature : ≤ Ambient +45 °C Surface Temperature |
≤ Ambient +45 °C |
|
Cooling Method : Forced Air Convection Cooling Method |
Forced Air Convection |
|
Gross Weight : 220kg Gross Weight |
220kg |
|
Package Size : 750x740x1160mm Package Size |
750x740x1160mm |
Volume : 4 L
Voltage: AC 220V 50Hz / 240V 60Hz
Timer: 0–9999 min
Temperature Setting Mode: Touch
Volume : 12 L
Timer: 0–9999 min
Temperature Setting Mode: Touch
Temperature Resolution : 1℃
Volume : 20 L
Timer: 0–9999 min
Temperature Setting Mode: Touch
Temperature Resolution : 1℃
Volume : 36 L
Timer: 0–9999 min
Temperature Setting Mode: Touch
Temperature Resolution : 1℃
Timer: Standard: 0–9999 min; P Type: 0–99 h 59 min; PL Type: 0–9999 min
Temperature Rise Time: ≤140 min
Temperature Resolution Ratio: 1°C
Temperature Range: 1700°C
Temperature Sensor: B-Type Thermocouple
Temperature Control: 50-Segment Programmable Digital PID Controller
Temperature Accuracy: ±1 °C
Technical Specifications:
Temperature Sensor: B-Type Thermocouple
Temperature Control: 50-Segment Programmable Digital PID Controller
Temperature Accuracy: ±1 °C
Technical Specifications:
Temperature Sensor: Thermocouple
Temperature Controller: Digital PID Controller
Temperature Control Accuracy: ±1°C
Safety Protection: Over-Temperature Protection
Time from Room Temp. to Max Temp. (min): 60
Temperature Setting Mode: Touch four keys
Temperature Resolution: 1°C
Temperature Fluctuation: ±5°C
Time from Room Temp. to Max Temp. (min): 70
Temperature Setting Mode: Touch four keys
Temperature Resolution: 1°C
Temperature Fluctuation: ±5°C
Time from Room Temp. to Max Temp. (min): 75
Temperature Setting Mode: Touch four keys
Temperature Resolution: 1°C
Temperature Fluctuation: ±5°C
Weight: 130 – 150 kg
Voltage: 110 V
Time to Max Temperature: 30 – 50 minutes
Thermocouple Type: Type K
Timing: 0–999 hours
Temperature Rising Time: 60±5 minutes
Temperature Resolution: 1°C
Temperature Controller: Touch Screen
Time from Room Temp. to Max Temp. (min): 80
Temperature Setting Mode: Touch four keys
Temperature Resolution: 1°C
Temperature Fluctuation: ±5°C
Time from Room Temp. to Max Temp. (min): 80
Temperature Setting Mode: Touch four keys
Temperature Resolution: 1°C
Temperature Fluctuation: ±5°C
Time from Room Temp. to Max Temp. (min): 80
Temperature Setting Mode: Touch four keys
Temperature Resolution: 1°C
Temperature Fluctuation: ±5°C
Timer: 0–99 h 59 min (programmable timing)
Temperature Setting: Touch button setting
Temperature Resolution: 1°C
Temperature Range: 100°C – 1200°C
Voltage: AC 220V 50Hz
Thermocouple: Type N
Temperature Accuracy: ±1°C
Structure: Bench-top, front loading
Working Temperature: 1100°C, 24/7
Thermocouple: Type N
Thermal Parameters:
Temperature Uniformity: ±5°C
Volume: 4L
Timer : 0–9999 min
Temperature Setting Mode : Touch
Temperature Resolution : 1℃
Volume : 12L
Timer: 0–9999 min
Temperature Setting Mode: Touch
Temperature Resolution : 1℃
Volume : 20 L
Timer: 0–9999 min
Temperature Setting Mode: Touch
Temperature Resolution : 1℃
Volume : 36 L
Timer: 0–9999 min
Temperature Setting Mode: Touch
Temperature Resolution : 1℃
Voltage: AC 220V, 50HZ
Thermocouple: Type K
Temperature control accuracy: ±1℃
Safety protection features: Protection for temperature deviation, over-temperature warning, phase-loss warning, and over-flow protection
Voltage: AC 220V, 50HZ
Thermo couple: Type K
Temperature control accuracy: ±1℃
Safety protection features: Protection for temperature deviation, over-temperature warning, phase-loss warning, and over-flow protection
Voltage: AC 220V, 50HZ
Thermo couple: Type K
Temperature control accuracy: ±1℃
Safety protection features: Protection for temperature deviation, over-temperature warning, phase-loss warning, and over-flow protection
Voltage: AC 220V, 50HZ
Thermo couple: Type K
Temperature control accuracy: ±1℃
Safety protection features: Protection for temperature deviation, over-temperature warning, phase-loss warning, and over-flow protection
Thermal Insulation: External Surface Temperature < 45°C
Temperature Accuracy: ±5°C
Standard Working Temperature: 538°C
Secondary Combustion Chamber Temperature: 900°C
Weight Monitoring: Continuous Electronic Balance Monitoring
Test Accuracy: ±0.11%
Temperature Control: Programmable Automatic Control
Sample Mass Capacity: Standard: 1200–1800 g; Maximum: 5000 g
