VMK-model

tmax up to 1200 °C

Laboratory chamber furnace, ASW insulation, Tmax 1200 °C, 1 - 25 l

Applications:

annealing, ashing, calcination, calibration, curing, debinding, drying, firing, fusion, glueing, hardening, heat treatment, melting, oxydation, pre-heating, shrink fitting, sintering, stress-relieving, tempering

The most important characteristics

Furnace for research, laboratory and production
Fiber insulated laboratory furnace
Max. operating temperature up to 1200°C
Fiber insulated inner housing
Fast heating and cooling cycles
Stainless steel housing
High energy efficiency
High quality – made in Germany
Easy to handle

We make it possible

Linn High Therm is specialized in adapting its products to customer’s requirements. Please let us know if you need any modifications apart from our standard offer. We will do everything to satisfy your wishes.

Options

Temperature controller G800
Serial interface
Furnace exhaust
Safety controller
Thermocouple type S
Controller SE50-Touch
Gas purging device
Gas flushing device
Post combustion
Travelling thermocouple

Product Specifications

Sizes

model	liters	Inside dimension in mm (wxdxh)	T. max °C	kW
VMK-10	1,0	100 x 100 x 100	1200	0,6
VMK-22	2,2	130 x 170 x 100	1200	0,9
VMK-39	3,9	180 x 200 x 110	1200	1,3
VMK-80	7,7	210 x 230 x 160	1200	2,1
VMK-135	13,5	250 x 300 x 180	1200	2,6
VMK-250	25,0	250 x 400 x 250	1200	3,75

Technical details

Furnace housing

In order to avoid corrosion in case of, e.g. ashing, combustion, digestion or aggressive binders, the VMK-furnaces are installed in a stainless steel housing. Below the door there is a shelf made of stainless steel, which also protects the operating elements from thermal and mechanical damage. Exhaust connecting piece made of stainless steel is installed at the rear wall.

Fibre insulation

The furnace chamber is vacuum formed in one ceramic fiber block. That way high insulation values can be achieved which result in a considerable reduction of the wall thickness of the insulation as well as of the weight at low energy saving volume. A stable, finned ceramic plate in the furnace bottom guarantees easy charging.

Heating

Long-live Kanthal A1 heating elements are embedded in the fiber muffle. The heating is effected from three sides so that a uniform temperature distribution in the furnace chamber is achieved. In connection with the insulation, faster heating and cooling cycles are obtained as well as energy saving of app. 40 %.

Control system

The control system is installed on the bottom side of the furnace (below the deposit) and as a standard it is equipped with the following instruments:

Temperature controller G400
2 setpoint or 3 setpoint controller with PID behaviour
One heating up speed freely programmable / ramp function (0,0 – 999,9 dig/min)
Display of actual value (desired value press button)
Self-optimization prevents overshooting (pre-adjustment or automatic self-optimization)
Separation of control level and configuration level (prevents undesired changes)
Alarm signal in case of thermocouple fracture
Timer switch on delay/switch out delay (adjustable 0,0 – 99,59 h/min)
Thermocouple NiCr-Ni (K) installed in furnace

Product properties

Product Line:	type series
Operation Mode:	Batch
Construction Types:	Furnace
Designs:	Chamber furnace, Laboratory furnace
Temperature Max (°C):	1200
Heatings:	electrical
Heatingmethods:	resistance
Atmospheres:	Air, Controlled gas atmosphere
Applications:	annealing, ashing, calcination, calibration, curing, debinding, drying, firing, fusion, glueing, hardening, heat treatment, melting, oxydation, pre-heating, shrink fitting, sintering, stress-relieving, tempering

Products- Details