LCI for low prices on low operating cost, high efficiency OEM Furnaces:  LA-Series or Laboratory Series Models, including return of the popular compact LA-306 (new updated design) and versatile LA-309, LA-309X; replaces RTC LA-304, LA-310 and LA310X laboratory (lab) production continuous atmosphere high temperature 1000C infrared belt furnaces.

Versitile Infrared Thermal Processing Furnace

The LA-309 is a versatile computer-controlled high temperature furnace for production and laboratory applications. Process atmosphere is controlled much like a clean room: pressurized gas is pushed through the heating chamber insulation providing a pre-heated, laminar flow for a uniform, stable atmosphere. Precise temperature is maintained by control thermocouples above the belt in each zone quickly sensing changing conditions. IR quartz heating lamps inside the chamber instantaneously adjust their output to achieve tight temperature control: each load through the furnace sees the same temperature.

Computer Controlled. The furnace is operated via ProControl software installed on a robust managed platform RAID1 furnace computer.  The process engineer can easily vary process parameters using the sophisticated PID and power control parameters in the software. An almost infinite number of recipes and profiles can be labeled and stored for ready access on the furnace computer.  The software includes 2 levels of password protected control (Engineer and Operator) and logs each change in recipe load or furnace state useful for troubleshooting product and process performance.

The furnace software operates on a Microsoft Windows 7 Professional computer system.  The program and all settings and recipes are stored on the RAID1 dual mirrored redundant hard drives.  The computer is complete with 17" LCD 1280x1024 high resolution color graphic screen, full size keyboard/mouse interface and both Ethernet and wireless-N high-speed network connections to facilitate view and control of the furnace by managers and process engineers from any location. The furnace includes four (4) local USB ports (two at entrance and two on the LCD monitor at the control panel) for connecting profilers and jump drive storage devices.

Laboratory and Production Applications. The LA-309 can process substrates, wafers, PCBs, metal, ceramic, glass or polycarbonate parts for Package Sealing, Epoxy Die Attach, Polymer Curing, Reflow Soldering, Hybrid/Thick Film Firing, General Thermal Processing, Brazing, Annealing, Tempering and  Metal Sintering applications.

Furnace Arrangement

Parameter LA-309LA-309X
Load Station 38 cm (15 inches)38 cm (15 inches)
Entrance Isolation Baffle with Venturi Exhaust38 cm (15 inches)38 cm (15 inches)
IR Heating Chamber, Zone 119 cm (7.5 inches)19 cm (7.5 inches)
IR Heating Chamber Zone 238 cm (15 inches)19 cm (7.5 inches)
IR Heating Chamber Zone 319 cm (7.5 inches)19 cm (7.5 inches)
IR Heating Chamber Zone 4none19 cm (7.5 inches)
Transition Tunnel with Venturi Exhaust38 cm (15 inches)38 cm (15 inches)
CACT Closed Atmosphere Cooling Chamber76 cm (30 inches)76 cm (30 inches)
Unload Station38 cm (15 inches)38 cm (15 inches)

Furnace Specifications for LA-309 Models

LAYOUT:   Datasheet pdf

Parameter LA-309LA-309X
Process Gas CDA, Nitrogen (-N), Forming Gas with premixed Hydrogen and Nitrogen (-FG)
Control Zones3 zones 4 zones
Heating Chamber length76 cm (30 inches)76 cm (30 inches)
Cooling ChamberCACT – CDA or N2 convective and radiant cooling, exterior fan heat removal.
Belt Speed25-500 mm/min (1-20 ipm) or 50-1000 mm/min (2-40) ipm (other speeds available)
Conveyor BeltBNV- low mass, stabilized Nichrome-V
Belt Size, nominal width 23 cm (9 in.)23 cm (9 in.)
Exhaust Improved venturi exhaust stacks to reduce process gas consumption.  Number of stacks vary with process requirements.
Temperature Capacity, max 1000 C
ElectricalAll models include universal transformers which accommodate 208-480 Vac and 50/60 Hz frequency anywhere in the world, allowing furnace relocation without external equipment. All furnace systems are phase balanced to improve facility efficiency. IR lamp controls automatically keep IR spectrum constant.

Facility Requirements

Parameter LA-309 & LA-309XMaximumTypical Operating @ 850 C
Power 208 Vac, 3 ph,  60 Hz
220-240 Vac, 3 ph,  50/60 Hz
380 Vac, 3 ph,  50/60 Hz
400-415 Vac, 3 ph,  50/60 Hz
440-500 Vac, 3 ph,  50/60 Hz
25.7 kW, 71 A
27.3 kW, 71.6 A
19.4 kW, 29.5 A
22.3 kW, 31.0 A
26.2 kW, 30.3 A
13.1 kW, 36.4 A
13.9 kW, 36.5 A
10.0 kW, 15.2 A
11.4 kW, 15.9 A
13.4 kW, 15.4 A
ParameterProcess SectionTyp 425 C operation (CDA exchange rate: 2x, balanced flow) Low O2 operation, 850 C (N2/FG exch rate:3x, 50 sLpm excess flow)
Process Gas Supply/td> Gas 1357 Lpm @ 5 bar
(756 scfh @ 70 psig)
96 sLpm @ 5 bar
(203 scfh @ 70 psig)
Gas 2 (Heating Chamber only)n/a69 sLpm @ 5 bar
(146 scfh @ 70 psig)
Process Gas ExhaustGas 1 + Gas 2357 sLpm
(756 scfh)
115 sLpm
(243 scfh)
Enclosure VentilationFurnace Cabinet Fans, vent to room or exhaust system1860 m3/hr @ 30C
(1100 cfm @ 86F)

Length3.07 m (121 inches)
Width0.76 m (30 inches)
Height1.56 m (61.5 inches)
Adjustable Conveyor Height91.44 cm +/- 3.8 (36 inch +/- 1.5)91.44 cm (36 inch)
Weight730 kg (1600 LB)

LA-309 Furnace Standard Features and Options

Standard OEM features are listed on the Standard Features pages (see link below). Popular options include the following:

Code DescriptionCode DescriptionCode Description
CXE15Load Extension, 380 mmCXX15Unload Extension, 380 mmDGODual Gas Operation (annealing, thick film)
EMElement Monitoring SystemOAOxygen AnalyzerAFRCoalescing Air Filter & Regulator
MAMoisture AnalyzerEHEdge HeatersGSMSupply Gas Mixing system
LTProcess Ready Light TowerCBCircuit BreakerIR-XInterface Roller, small dia. Exit (or see IR-E)

Many more options can be selected to configure the furnace for you particular application.