KSL-1800X-KA3 Bench-Top Muffle Furnace with 18L Chamber, Kanthal Super-1900 MoSi2 Elements, Up to 1800°C
The KSL-1800X-KA3 is designed for laboratory applications requiring ultra-high temperature heat treatment, such as sintering high-purity ceramics without contamination from heating elements. Its spacious 18-liter chamber (10″x10″x12″) accommodates various sample sizes while maintaining precise temperature control.
This furnace achieves temperatures up to 1800°C for short durations (less than 1 hour) and supports continuous operation at 1750°C. The heating elements are made from Kanthal Super-1900 molybdenum disilicide (MoSi2), known for high-temperature stability and longevity. Temperature is regulated by a high-precision SCR digital controller with ±1°C accuracy and programmable 30-segment profiles, enabling complex ramping, dwelling, and cooling cycles.
Key Features
- Double steel shell with cooling fan to maintain safe exterior temperature
- High-purity alumina fiber insulation for energy efficiency
- Zirconia (YSZ) chamber liner for extended service life
- Eight Kanthal Super-1900 MoSi2 heating elements, 420 mm length each
- B-type thermocouple (Pt-Rh) with YSZ protection tube for accurate temperature measurement
- PID temperature controller with auto-tune, over-temperature and thermocouple failure alarms
- Programmable 30-segment temperature profiles with ramp, dwell, and cooling steps
Technical Specifications
| Parameter | Specification |
|---|---|
| Chamber Dimensions | 10″ x 10″ x 12″ (18 liters) |
| Maximum Temperature | 1800°C (up to 1 hour) |
| Continuous Operating Temperature | 1750°C |
| Heating Rate | RT to 1600°C: ~10°C/min; 1600°C to 1800°C: 2-5°C/min |
| Temperature Accuracy | ±1°C |
| Temperature Uniformity | ±5°C over 120 mm (5″) at 1700°C; ±2°C over 80 mm (3″) at 1700°C |
| Heating Elements | 8 pcs Kanthal Super-1900 MoSi2, 420 mm length |
| Thermocouple | B-Type (Pt-Rh to Pt-Rh) with YSZ protection tube |
| Power Supply | AC 208-240V, 50/60 Hz, single phase (requires 50A breaker) |
| Power Consumption | 9 kW |
| Weight | 420.2 lb (190.6 kg) |
| Furnace Structure | Double shell steel case with cooling fan; alumina fiber insulation; ZrO2 (YSZ) chamber liner |
Typical Applications
- Sintering and heat treatment of high-purity ceramic materials
- Material research requiring ultra-high temperature processing
- Laboratory-scale thermal processing where contamination-free heating is critical
Configuration & Operating Notes
- Standard controller: FA-YD518P-AG with PID and auto-tune, 30 programmable segments, alarms, and PC communication port
- Optional upgrades: Eurotherm 3504 temperature controller compatible with LabVIEW, MTS02-Y software kit with laptop for advanced control and data logging
- Included accessories: Kanthal Super-1900 heating elements (8 pcs), B-type thermocouple set, alumina sample plate, furnace door block, crucible clip, operation manual
- Power cable included; plug not included and must be sourced locally or ordered separately
- Recommended heating and cooling rates not to exceed 10°C/min to prolong element life
- Not suitable for vacuum sealing or use with toxic/explosive gases without proper safety controls
- Normal refractory ceramic surface cracking may occur over time; repairable with alumina coating
- Refractory block must be inserted before closing the door
