Forced Convection Chamber Furnaces up to 675 Liter electrically heated

Optimum air distribution enabled by high flow speeds.

Process Control

Function and equipment

NA120_65.png
NA250_85.png
NA250_45
NA60_85.jpg
NA_Thermoelementdurchfuehrung
NA_Einlegeblech
Rollengang
Forced convection chamber furnace NA 120/65
Forced convection chamber furnace NA 250/85
Forced convection chamber furnace NA 250/45
Forced convection chamber furnace NA 60/85 with manual lift door and protective gas box for front loading
Port for thermocouple
Tray
Roller conveyor in furnace chamber

The very good temperature uniformity of these chamber furnace with air circulation provides for ideal process conditiones for annealing, curing, solution annealing, artificial ageing, sintering of PTFE, preheating, or soft annealing and brazing. The forced convection chamber furnaces are equipped with a suitable annealing box for soft annealing of copper or tempering of titanium, and also for annealing of steel under non-flammable process gases. The modular forced convection chamber furnace design allows for adaptation to specific process requirements with appropriate accessories. 

  • Tmax 450 °C, 650 °C, or 850 °C
  • Horizontal air circulation with optimum distribution through stainless steel baffles
  • Swing door hinged on the right side
  • Base frame included in the delivery
  • Temperature uniformity up to +/−  4 °C according to DIN 17052-1 
  • Optimum air distribution enabled by high flow speeds
  • One frame sheet and rails for two additional trays included in the scope of delivery
  • Over-temperature limiter with adjustable cutout temperature as temperature limiter to protect the furnace and load
  • Exclusive use of insulation materials without categorization according to EC Regulation No 1272/2008 (CLP). This explicitly means that alumino silicate wool, also known as “refractory ceramic fiber” (RCF), which is classified and possibly carcinogenic, is not used.
  • Defined application within the constraints of the operating instructions
  • Controller with touch operation B500 (5 programs with 4 segments each)
  • NTLog Basic for Nabertherm controller: recording of process data with USB-flash drive
  • Freeware NTEdit for convenient program input via ExcelTM for WindowsTM on the PC
  • Freeware NTGraph for evaluation and documention of firings using ExcelTM for WindowsTM on the PC
  • MyNabertherm App for online monitoring of the firing on mobile devices for free download

Additional equipment

Additional Equipment for Models up to 450 °C

  • Air inlet and exhaust air flaps when used for drying
  • Controlled cooling via controlled flap and fan
  • Additional frame sheet
  • Gas supply boxes for different charging methods
  • Gas feed fittings
  • Charge control with documentation of the charge thermocouple
  • Signal tower
  • Charging systems
  • Process control and documentation via VCD software package for monitoring, documentation and control

 

Further Additional Equipment for Models up to 850 °C

  • Optimization of the temperature uniformity up to +/−  3 °C according to DIN 17052-1
  • Measuring frames and thermocouples for TUS measurements charge or comparative measurements
  • Version according to AMS2750H or CQI-9
  • Manual lift door for forced convection chamber furnace NA 120/65 and NA 120/85
    Pneumatic lift door from forced convection chamber furnace NA 250/65 upwards
  • Manual roller conveyor in furnace chamber for high charge weights
  • Process control and documentation via VCD software package for monitoring, documentation and control

Technical specifications

ModelTmaxInner dimensions in mmVolumeOuter dimensions1 in mmHeatingElectricalWeightHeat-up time3Cool-down time3 from Tmax
     power  to Tmaxto 150 °C in minutes
 °Cwdhin lWDHin kW2connectionin kgin minutesFlaps4Fan cooling4
NA 120/454504506004501201075147515009.03-phase280609030
NA 250/4545060075060025012501660167012.03-phase6506012030
NA 500/45450750100075050014001910181018.03-phase8009024045
               
NA 60/6565035050035060930131014359.03-phase2409021030
NA 120/6565045060045012010301410153512.03-phase2809024060
NA 250/6565060075060025012501700175020.03-phase6509048060
NA 500/65650750100075050014001950190027.03-phase8509060090
               
NA 60/8585035050035060930131014359.03-phase31515048090
NA 120/8585045060045012010301410153512.03-phase390150480120
NA 250/8585060075060025012601700181020.03-phase840180900180
NA 500/85850750100075050014101950196030.03-phase1150180900210
NA 675/85850750120075067514102150196030.03-phase1350210900210
1External dimensions vary when furnace is equipped with additional equipment. Dimensions on request.
2Depending on furnace design connected load might be higher 
3Approx. information in empty furnace 
4Additional equipment

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Catalog

A complete overview of our extensive range of furnaces, ovens and accessories for the laboratory can be found in our “Laboratory” catalog.

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