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Benchtop Muffle Furnace

muffle furnace
CE mark
with Adjustable Shelf (48000 model only)
from Thermo Scientific
  • Features a heating range from 100°C to 1200°C (212°F to 2192°F)
  • Chamber offers 120 or 350 cubic inches (0.006 m³ or 0.002 m³) of heating space
  • Ceramic shelf doubles work area; ideal for heating small parts (model 48000 only)
  • Choose between electronic single setpoint control and programmable control
  • 0.375" (10 mm) port allows injection of special atmospheres or monitoring of chamber temperature with independent measuring device
Model Controller Electrical
(50/60 Hz)
Operating Temperature
Range
Thermo
Scientific
Part #
Cat. # Price
Volts* Amps Watts °C °F
47900 Single Set-
Point Control
120 8.3 1000 100 to 1200 212 to 2192 F47925 1800-52 $ 2,332
240 4.2 F47920 1800-53 $ 2,475
240CE** 4.2 F47920-33 1800-52-220 $ 2,529
Prog. 4 Ramp
& 4 Dwell
120 8.3 1000 100 to 1200 212 to 2192 F47925-80 1800-54 $ 3,123
240
4.2
F47920-80 1800-55 $ 3,057
240CE** 4.2 F47920-33-80 1800-54-220 $ 3,131
48000 Single Set-
Point Control
120 15.0 1800 100 to 1200 212 to 2192 F48025 4000-64 $ 3,631
208 7.5 1560 F48028 4000-64-208 $ 3,072
240 7.5 1800 F48020 4000-65 $ 2,814
240CE** 6.5 1560 F48020-33 4000-65-220 $ 2,936
Prog. 4 Ramp
& 4 Dwell
120 15.0 1800 100 to 1200 212 to 2192 F48025-80 4001-84 $ 3,496
208 7.5 F48028-80 4001-84-208 $ 3,472
240 7.5 F48020-80 4001-85 $ 3,471
240CE** 6.5 F48020-33-80 4001-85-220 $ 3,471
* 240 volt models are not UL listed or CSA certified.
** CE marked
muffle furnace 48000
Adjustable shelf in Model 48000
These muffle furnaces use open coil heating elements on both sides of the heating chamber to allow fast heating with minimal temperature gradient. This energy efficiency is enhanced through the use of high thermal-efficient ceramic insulation surrounding the chamber. The free-floating, ceramic fiber door includes a chamber plug that prevents heat loss around the door by totally sealing when the spring-loaded door is closed.

Electronic single setpoint controls enable you to heat up the muffle furnace to one single setpoint level and hold that setpoint temperature. A programmable control enables you to program up to eight ramps and eight dwell times. Thus you can choose among two chamber sizes and two temperature controllers. The digital single setpoint control features a single ramp to setpoint and a dwell, again with a single display but also with a mechanical Over Temperature Protection relay. The digital programmable control features 1 stored program with 8 segments, along with RS232 communications. This microprocessor control features adjustable over-temperature protection, sensor-break protection, and digital readout of both setpoint and muffle furnace temperature.

A built-in venting system allows easy removal of undesirable contamination and moisture, making this muffle furnace especially suitable for use with sensitive microelectronic components. In addition, a 0.375" (10 mm) port allows you to purge the chamber with nitrogen or other special atmospheres, thereby enhancing moisture and contamination control; this port can also be used for independent temperature monitoring.

The interior chamber of Model 48000 (only) features built-in racks that allow adjustable positioning of a ceramic shelf (included), which effectively doubles the working area. Comes complete with on/off switch, thermocouple and grounded three-wire cord and plug.

Applications

  • Gravimetric analysis
  • Sintering
  • Quantitative analysis
  • Heat treating
 

Safety

  • Door safety switch protects operator by removing power to the heating elements upon opening the door
  • Thermocouple break protection cuts power to the heating elements, preventing a thermocouple failure runaway condition
Specifications
Model Heating Area
Cu. inches (m³)
Chamber Dimensions
Inches (mm)
Overall Dimensions
Inches (mm)
Shipping Weight
Lbs (Kg)
47900 120
(0.002)
5" W x 6"D x 4" H
(127 x 152 x 102)
11.3" W x 15.5" D x 18" H
(287 x 394 x 457)
41
(18.6)
48000 350
(0.006)
7&"W x 10" D x 5" H
(178 x 254 x 127)
13.3" W x 19.5"D x 19" H
(338 x 495 x 483)
60
(27.2)
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