Thermo Scientific ELED FD1535M Thermolyne Industrial Benchtop Muffle Furnace with (B1) Digital Single Setpoint Temperature Controller with Ramp and Dwell, 120V, 2.2 Liter Capacity, 100 to 1200 Degree C

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Brand: Thermo Scientific


  • Benchtop muffle furnace with 2.2L (0.08 cubic foot) heating area capacity for general laboratory use
  • Temperature range of 100 to 1,200 degrees C for laboratory heating applications such as ashing, sintering, heat treating, quantitative analysis, and gravimetric analysis
  • B1 single-setpoint digital temperature controller with ramp and dwell for setting and controlling the rate of heat-up and duration of temperature hold
  • Four heating elements embedded in refractory cement on furnace top, bottom, and sides for fast and even heating
  • Heavy-duty firebrick insulation surrounds chamber opening for increased durability

Publisher: Thermo Scientific

Release Date: 2017-05-15


The Thermo Scientific FD1535M Thermolyne Industrial Benchtop Muffle Furnace has a B1 single-setpoint digital controller with ramp and dwell, 2.2L (0.08 cubic foot) heating area capacity, and a temperature range of 100 to 1,200 degrees C for general laboratory use. Four heating elements embedded in refractory cement on the furnace top, bottom, and sides provide fast and even heating, with minimal temperature gradient. Thermal-efficient ceramic fiber insulation reduces heat loss and enhances energy efficiency. Heavy-duty firebrick insulation surrounds the chamber opening for increased durability. A 0.95 cm (0.38") diameter port at the rear of the furnace allows an independent temperature monitoring device to check internal temperature measurements. The furnace has an LED display that shows the chamber temperature as the unit heats, and the setpoint temperature can be checked. The counter-weighted front door swings up when opened, which vents heated air up and away from the operator. A ceramic hearth plate to protect the bottom heating element is included. This furnace is designed for laboratory-heating applications such as ashing, sintering, heat treating, quantitative analysis, and gravimetric analysis.

The Thermo Scientific FD1535M requires a 120V and 50/60 Hz hardwired electrical connection (not included). The B1 single-setpoint digital controller with ramp and dwell allows the user to set a target temperature and control how quickly the furnace heats up and how long it holds the temperature before turning off. This controller also includes over-temperature protection (OTP), which sounds an alarm when the furnace heats beyond a specified limit. A mechanical OTP relay turns off power to the heating elements when the alarm sounds. Additional safety features include a door safety switch, which turns off the heating elements when the door is opened, and sensor break protection, which turns power off in the event of thermocouple failure. The furnace controller also includes a self-tuning feature. Self-tuning changes the control parameters to ensure temperature accuracy for a particular material type (load) and setpoint. A built-in vent port removes moisture and contaminants, which extends the life of the heating elements and the furnace. The furnace is Underwriters Laboratories (UL) and Canadian Underwriters Laboratories (cUL) Listed for safety.

Capacity (heating area) 2.2L (0.08 cubic foot)
Temperature range 100 to 1,200 Degrees C
Electrical requirements 120V 50/60 Hz
Power consumption 2,230 watts
Amperage 18.6 A
Weight 23.5kg (52 lb.)
Interior dimensions 9.5 x 10.1 x 22.8 cm/3.75 x 4 x 9 inches (H x W x D)
Exterior dimensions 41.9 x 27.9 x 45.7 cm/16.5 x 11 x 18 inches (H x W x D)
Safety standards met UL, cUL
Manufacturer's warranty 12 months

H is height, the vertical distance from the lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back.

Laboratory furnaces are used for heating applications that require a range of high temperatures. They heat to high temperatures evenly and maintain consistent temperatures, while providing an environment free of undesirable contaminants and moisture. Factors such as object size, controllers, temperature range, and shape determine the uses of particular furnaces. Most furnaces have digital controllers that determine how fast they heat up (ramp), how long the temperature can be held (dwell), and how fast they cool down. Safety systems are included in most furnaces to prevent overheating the contents, as well as the furnace itself. Laboratory furnaces are used in applications such as petroleum analysis, chemical analysis of certain compounds, and heat-treating small steel parts.

Thermo Fisher Scientific manufactures analytical instruments, laboratory equipment, consumables, and software under the Thermo Scientific and Fisher Scientific brands, among others. The company was founded in 2006 and is headquartered in Waltham, MA.

What’s in the Box?

  • FD1535M Thermolyne Industrial Benchtop Muffle Furnace with Single Setpoint Digital Temperature Controller with Ramp and Dwell
  • Platinel II thermocouple
  • Ceramic hearth plate
  • Instructions

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Worked great

Put batteries in and worked great