| Category | Muffle Furnace |
| Model | Terracotta Furnace |
| Max Temperature | 1000°C (1832°F) |
| Working Temperature | 900°C |
| Thermocouple Type | N (Nicrosil-Nisil) |
| Thermocouple Details | Inconel 600 sheath, 6mm diameter, Type N, Tolerance Class 2, 0 to +1100°C range, MgO insulated mineral |
| Heating Element | Kanthal A1 (FeCrAl) |
| Element Details | Max temp: 1425°C, Superior cyclic performance, FeCrAl alloy with rare earth elements |
| Chamber (MM) | 690 x 870 x 690 |
| Outer Body (MM) | 1090.0 x 1485.0 x 970.0 |
| Chamber Volume | 414.2 Litres |
| Volume (cu.ft) | 58.6 ft³ |
| Power Load | 32.75 kW |
| Power Supply | 440V, Three Phase |
| Gross Weight | 479.15 kg |
| Chamber Shape | Rectangular - tall |
This furnace (kiln) is used for firing terracotta, a porous, red-brown earthenware clay. Operating at moderate temperatures (around 900°C), it hardens the clay without causing vitrification. The working principle is a standard bisque firing cycle, driving off water and organic matter and sintering the clay particles enough for strength while maintaining porosity. Its purpose is for producing terracotta flower pots, architectural tiles, sculptures, and decorative items. The distinctive color comes from the iron content in the clay, which oxidizes to red during firing.
Equivalent chamber references: 690 x 870 x 690 MM, 69 x 87 x 69 CM and 27 x 34 x 27 INCH. Buyers searching for 1000 Degree Celsius Terracotta Furnace 690 x 870 x 690 MM chamber; 1000°C Terracotta Furnace 690 x 870 x 690 MM; 1000 Degree Celsius Terracotta Furnace 69 x 87 x 69 CM chamber; 1000°C Terracotta Furnace 69 x 87 x 69 CM; 1000 Degree Celsius Terracotta Furnace 27 x 34 x 27 INCH chamber; 1000°C Terracotta Furnace 27 x 34 x 27 INCH can verify the same physical chamber on this canonical product page before requesting price, GST invoice, packaging and delivery.
Trutherm manufactures 1000 Degree Celsius (°C) Terracotta Furnace 690 x 870 x 690 MM Chamber for buyers who search by exact machine type, chamber size and 1000°C temperature rating. This page is specific to the MM dimension version, so the chamber size is presented in the unit normally used in the buyer's drawing, tender or purchase request.
This configuration is suitable when the sample load must fit a 690 x 870 x 690 MM chamber with usable chamber volume of 414.2 litre, approximate power load of 33.1 kW, rectangular - tall chamber profile. It is commonly selected for laboratory, QC, metallurgical, ceramic, pharmaceutical and industrial heat-treatment work requiring stable heating and repeatable process conditions. Typical use includes general laboratory and industrial heat-treatment applications requiring stable, repeatable temperature control.
A muffle furnace is usually the first furnace a lab installs, since it covers the broadest share of everyday heating, drying and ashing tasks before more specialised equipment is added.
A muffle furnace isolates the sample from direct contact with heating elements or combustion gases, giving cleaner, more repeatable results than an open flame or hot-plate process.
As a general-purpose muffle furnace, this model covers a broader range of routine heating tasks than a process-specific ashing, tube or sintering furnace, making it the practical default when the lab runs mixed sample types rather than one dedicated process.