Ashing Furnaces up to 1100 °C

A special fresh-air and exhaust air system ensures that the air is replaced 6 times per minute so that there is always sufficient oxygen for the ashing process.

Process Control

Function and equipment

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Ashing furnace LV ../11 is designed especially for ashing processes to 1050 °C in the laboratory. Applications include determining loss on ignition, ashing food and plastics for subsequent substance analysis. A special fresh-air and exhaust air system ensures that the air is replaced 6 times per minute so that there is always sufficient oxygen for the ashing process. Incoming air passes the furnace heating and is pre-heated to ensure good temperature uniformity.

Standard Equipment

  • Tmax 1100 °C
  • Heating from two sides
  • Ceramic heating plates with integral heating element which is safeguarded, and easy to replace
  • Air exchange of more than 6 times per minute
  • Good temperature uniformity due to preheating of incoming air, temperature uniformity according to DIN 17052-1 to +/− 10 °C in the defined empty work area (from 550 °C)
  • Dual shell housing made of textured stainless steel sheets with additional fan cooling for low surface temperature
  • Exclusive use of insulation materials without categorization according to EC Regulation No. 1272/2008 (CLP)
  • Suitable for many standardized ashing processes according to ISO, ASTM, EN, and DIN
  • Optional flap door (LV) which can be used as work platform or lift door (LVT) with hot surface facing away from the operator
  • Controller B510 (5 programs with each 4 segments)
  • Solid state relays provide for lownoise operation
  • Defined application within the constraints of the operating instructions
  • NTLog Basic for Nabertherm controller: recording of process data with USB-flash drive

Additional equipment

Additional Equipment

  • Over-temperature limiter with adjustable cutout temperature as temperature limiter to protect the oven and load
  • Port for thermocouple in the rear wall or in the furnace door
  • Charging rack with closed or perforated trays for loading the furnace in two levels incl. holder for inserting/removing the trays up to a max. temperature of 800 °C and a max. loading weight of 2 kg for the LV(T) 9/11 respectively 3 kg for the LV(T) 15/11
  • Process control and documentation via VCD software package for monitoring, documentation and control

Technical specifications

Model Tmax Inner dimensions in mm Volume Outer dimensions2 in mm Max. weight of hydrocarbons Max. evaporation rate Connected
load Electrical Weight Heating time
Flap door in °C1 w d h in l W D H3 in g g/min in kW connection* in kg in min4
LV 3/11 1100 160 140 100 3 385 360 735 5 0.1 1.2 1-phase 20 45
LV 5/11 1100 200 170 130 5 385 420 790 10 0.2 2.4 1-phase 35 55
LV 9/11 1100 230 240 170 9 415 485 845 15 0.3 3.0 1-phase 45 70
LV 15/11 1100 230 340 170 15 415 585 845 25 0.3 3.5 1-phase 55 80

 

Model Tmax Inner dimensions in mm Volume Outer dimensions2 in mm Max. weight of hydrocarbons Max. evaporation rate Connected load Electrical Weight Heating time
Lift door in °C1 w d h in l W D H3 in g g/min in kW connection* in kg in min4
LVT 3/11 1100 160 140 100 3 385 360 735 5 0.1 1.2 1-phase 20 45
LVT 5/11 1100 200 170 130 5 385 420 790 10 0.2 2.4 1-phase 35 55
LVT 9/11 1100 230 240 170 9 415 485 845 15 0.3 3.0 1-phase 45 70
LVT 15/11 1100 230 340 170 15 415 585 845 25 0.3 3.5 1-phase 55 80
1Recommended working temperature for processes with longer dwell times is 1000 °C*Please see page 75 for more information about supply voltage
2External dimensions vary when furnace is equipped with additional equipment. Dimensions on request.
3Including exhaust tube (Ø 80 mm)
4Approx. heating time of the empty and closed furnace up to Tmax −100 K (connected to 230 V 1/N/PE)

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Customer Test Center

What furnace is the right choice for this specific process? This question cannot always be answered easily. Therefore, we have set up our modern test center which is unique in respect to size and variety. A representative number of furnaces is available for tests for our customers.