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laboratory muffle furnace

These compact muffle furnaces are perfect for many applications in laboratory It is an ideal instrument for materials annealing and sintering in your research...
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1200℃-1800℃ Muffle Furnace 

JINHE New Factory Video:

Muffle Furnace uses Resistance wire as heating elements, which can be used up to 1200℃. These compact muffle furnaces are perfect for many applications in laboratory. It is an ideal instrument for materials annealing and sintering in your research.

1. Operation Temperature: 1100℃ (1200℃ for short time). 
2. Maximum energy efficiency is achieved by surrounding the chamber with thermal-efficient alumina fiber ceramic insulation.
3. Heavy duty double layer structure with cooling fan. Lower temperature in outside case. 
4. PID automatic control via current limiting phase angle fired the resistor, e.g. SCR (Silicon Controlled Rectifier).
5. Power control with 51 segments programmable

Ⅰ. Technical Specifications

Max. temperature 1200 C (<2hour)
Working temperature 1100 C
Temperature controlling

PID automatic control via SCR (Silicon Controlled Rectifier) 

power control with phase angle fired, current limiting resistor.

30 programmable segments for precise control of heating rate, 

cooling rate and dwell time.

Built in PID Auto-Tune function with overheating & broken

thermocouple broken protection.

Over temperature protection and alarm allows for 

operation without attendant.

Temperature accuracy ±1C
Temperature Uniformity ±5C over 120mm @ 1100C
±3C over 80mm @ 1100C
Heating rate 0-20C /min
Thermocouple K type with 99.7% purity Alumina tube
Heating element Quality heating wire
Furnace Chamber Two layers of ceramic fiber insulation materials

First layer: 1430°C ceramic fiber board, density 450kgs/m3. 

Thermal conductivity (1200℃) is only 0.18W/m.k.

Second layer: 1260°C ceramic fiber board, density 350kgs/m3.
Furnace structure

Double layer steel casing with dual cooling fan, surface

temperature below 60oC

Furnace door Front-side open
Power cutting off when furnace door open
Working voltage 220V, 50HZ
Rated power 7KW

One year limited warranty with life time support. (Consumable

parts such as heating elements and crucibles are not covered

by the warranty, please order the replacement at related products) 

ATTENTION: Any damages caused by the use of corrosive and 

acidic gases are not under the coverage of One Year Limited Warranty.

Certifications CE
Ⅱ. Application Notes  
Using Attentions Cooling rate shall also not exceed 10℃ /min.   

Toxic or explosive gases are not recommended for use with 

this furnace without necessary 

safety controls and supervision.   

Small cracks may appear on the surface of the refractory ceramics

over extended use. This is a normal occurrence and the cracks

may be repaired with alumina coating. 

Refractory door block must be inserted before closing door.

Standard Size:

Type Max.Temperature(℃) Furnace Chamber Size(mm) Volume(L) Rated Power(kw)
(Width x Height x Depth)
JHP-2-1 1200/1400/1700/1800 100x100x100 1 0.8
JHP-2-2 1200/1400/1700/1800 120x120x130 2 1.5
JHP-2-3 1200/1400/1700/1800 150x150x150 3 2
JHP-2-5 1200/1400/1700/1800 150x150x200 5 3
JHP-2-8 1200/1400/1700/1800 200x200x200 8 5
JHP-2-12 1200/1400/1700/1800 200x200x300 12 6
JHP-2-27 1200/1400/1700/1800 300x300x300 27 8
JHP-2-36 1200/1400/1700/1800 300x300x400 36 10
JHP-2-64 1200/1400/1700/1800 400x400x400 64 15
JHP-2-125 1200/1400/1700/1800 500x500x500 125 25
JHP-2-216 1200/1400/1700/1800 600x600x600 216 36
JHP-2-512 1200/1400/1700/1800 800x800x800 512 64
JHP-2-729 1200/1400/1700/1800 900x900x900 729 81
JHP-2-1000 1200/1400/1700/1800 1000x1000x1000 1000 100
Note:Special size can be customized.