For choosing best furnace according to your requirement first you need to know about your working temperature range.
Muffle furnaces are designed according to the given temperature range.
- 50-900 degrees – Muffle type Chamber
- 50-1100 degree – Tile Chamber
- 50 – 1450 degree –Board Chamber
- 100-1700 degree – Ceramic Board Chamber
- 100-1800 degree – Ceramic Board Chamber
For the safety of user you have to have good quality insulation. There are many kind of insulation available in market& few are given below.
- Glass Wool Insulation – This is not recommended for safety of user
- Brick Insulation – Not recommended
- Zirconia Fiber Board 1400 – Density 200-600kg/m3
- Ceramic Fiber Board 1700 – Density: 300-600kg/m3
- Ceramic Fiber Board 1800 – Density: 350-600kg/m3
We always recommend for ceramic fiber board for zero skin temperature with long life of machinery and user safety.
Controller plays important role in selection of a Lab Muffle furnace. Choose your controller according to your requirement.
- PID controller –PID controller have auto tune facility with double and single display have set value and present value options.
- Programmable controller (Profile Controller) – This is the advance version of PID controller which has RAMP Rate & Soaking time setting, It also shows remaining time in a set program.
- PLC with HMI – PLC is a controlling device with HMI display for better user experience. PLC has programming, data logging, Chart facility, Graph, RS 232, USB port, 7 inches digital display, 50 stored program.
Electrical components for power supply to heating elements.
- SSR – Solid State relay
- SCR – Silicon Controlled Rectifier
- Thyristor
- Transformer
We always recommend Thyristor for furnace instead of SSR and transformer because of many advantages like proper electrical supply to heating elements, Temperature accuracy & low power consumption.
Keep all the above points in mind before buying a muffle furnace. Laboratory Muffle furnace outer construction, door opening and design is also one of the parameter to keep in mind. Heating elements & thermocouple will be fitted according to the temperature range of the furnace.
Still have doubts in selection of a muffle furnace to complete your job? Contact our product specialists at +91-8826276000 (Whatsapp Number)