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.

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Process Control

Function and equipment

Ashing furnace LV 5/11

Ashing furnace LVT 3/11

Ashing furnace LVT 9/11

Air inlet and exhaust flow principle in ashing furnaces

Furnace chamber with air inlet openings for air exchange of more than 6 times per minute

Ashing furnace LV 5/11 with port for thermocouple in the rear wall of furnace

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Ashing furnace LV(T) .. 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 with touch operation 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 furnace 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 per layer 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. loading weight of organic substances	Max. evaporation rate of organic substances	Max. 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	180	150	120	3	345	390	810	5	0.1	1.3	1-phase	20	45
LV 5/11	1100	205	170	130	5	385	415	810	10	0.2	2.6	1-phase	29	55
LV 9/11	1100	235	240	170	9	415	485	865	15	0.3	3.3	1-phase	36	70
LV 15/11	1100	230	340	170	15	415	590	865	25	0.3	3.6	1-phase	44	80

Model	Tmax	Inner dimensions in mm			Volume	Outer dimensions² in mm			Max. loading weight of organic substances	Max. evaporation rate of organic substances	Max. 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	180	150	120	3	345	390	810	5	0.1	1.3	1-phase	20	45
LVT 5/11	1100	205	170	130	5	385	415	810	10	0.2	2.6	1-phase	29	55
LVT 9/11	1100	235	240	170	9	415	485	865	15	0.3	3.3	1-phase	36	70
LVT 15/11	1100	230	340	170	15	415	590	865	25	0.3	3.6	1-phase	44	80
¹Recommended working temperature for processes with longer dwell times is 1000 °C 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)