• Mechanical Convection Laboratory Ovens

Mechanical Convection Laboratory Ovens

DIN 12880

  • Available in 1.39, 3 cu.ft. or 4.9 cu.ft.
  • Fast ramp-up to 306°C for faster cycle times.
  • Temperature range 20°C above ambient to 306°C

Ideal for Industrial, Analytical and General Laboratory Applications

SHEL LAB SMO Series laboratory ovens are recommended for critical scientific and analytical use in laboratory and pilot plant product research. Typical applications include aging, curing, drying, baking, pre-heating, conditioning and life cycle testing. Choose from three cabinet sizes, each with forced-air circulation and reserve heating power for quick recovery after door openings.

Features and Benefits

The SMO Series ovens are engineered for safe, accurate and uniform performance in demanding laboratory environments.

  • Fast ramp-up to 306°C for faster cycle times.
  • Temperature range approximately 20°C above ambient to 306°C for multiple applications.
  • Advanced PID temperature control
  • system for sensitive response.
  • Built-in digital timer for automatic
  • operation following manual start.
  • Independent overtemperature setpoint and operational control override for additional safety.
  • Internationally certified CAN/CSA, UL, EN, IEC 61010, and compliant with CE.
  • Stainless steel interior construction for long life operation, easy cleaning.
  • Forced-air circulation to assure maximum temperature uniformity.
  • Triple-wall construction to minimize external surface temperature.
  • Stainless steel shelves are adjustable on 0.5" (12.7mm) centers to provide flexible inventory options.
  • Rear access port, 1.75" diameter (44mm) for independent cables,instrumentation.
  • Exhaust port, 3" diameter (76mm), adjustable, with external connection to customer-supplied vent for effluent exhaust if required.

High Temperature Performance

SHEL LAB SMO Series ovens are available in 110-120V, 50/60Hz or 220-240V, 50/60Hz configurations and achieve temperatures up to 306°C with fast ramp-up and recovery times. Heat-Up Rapid heat-up times to 306°C depend on voltage selected. Published heat-up performance is based on a standard cabinet under controlled testing at a (22 ± 3)°C ambient temperature, line voltage ±10% of specified voltage. Recovery Upper vents are closed when recovery times following door openings are tested. Published recovery performance is based on a standard cabinet under controlled testing at a (22 ± 3)°C ambient temperature, line voltage ±10% of specified voltage.

Applications

  • Aging
  • Asphalt Testing
  • ASTM, UL and Life Testing
  • Baking, Conditioning, Curing
  • Burn-in
  • Drying
  • Curing
  • Moisture and Stability Testing

Control, Timer Program and Monitoring

The advanced loop PID (proportional, integral, derivative) controller commands proportional power to the heating element to provide  the most accurate and responsive control. Each controller is matched to the oven size to assure faster response to setpoint without overshoot, and quicker recovery following door openings. The on-board timer permits programmed dwell cycles with automatic shut-off for custom applications. Indicator lights are included for visual status feedback on critical functions.

Integrated Control Panel

All controls are centrally located on the main panel including manual power and timer on/off switches, independent overtemperature control, digital temperature and timer setpoint adjustments, and indicator lights for all functions.

DIN 12880 Compliance

SHEL LAB SMO Series ovens are designed to meet or exceed the performance criteria established through DIN 12880:2007:05 and
ASTM E145-94 (Reapproved 2006.) These criteria set common standards for laboratory oven performance in heat-up, temperature
uniformity and door-open recovery time. Confirmation of temporal and spatial performance is achieved by testing with multi-point temperature probes strategically positioned throughout the oven chamber interior, including center point positions where stability, equilibrium and set point control are required.

  SMO1 SMO3 SMO5
Interior Volume, Nominal 1.39 cu.ft. (39.4 liters) 3 cu.ft. (85 liters) 4.9 cu.ft. (138 liters)
Interior Dimensions W x H x D 12.1" x 14.5" x 13.75"
30.7 x 36.8 x 39.4cm
16.5" x 16.25" x 19.5"
41.9 x 41.2 x 49.5cm
21" x 20.75" x 19.44"
53.3 x 52.7 x 49.4cm
Exterior Dimensions W x H x D 22.7" x 31.5" x 23.5"
57.7 x 80.0 x 59.6cm
26.9" x 34" x 28.6"
68.4 x 86.4 x 72.7cm
31.4" x 38.8" x 28.1"
79.8 x 98.5 x 71.4cm
Interior Construction 400 series stainless steel 400 series stainless steel 400 series stainless steel
Exterior Construction 20 gauge steel, powder coated 20 gauge steel, powder coated 20 gauge steel, powder coated
Shelves* 2 standard, 6 total 2 standard, 7 total 2 standard, 9 total
Maximum Weight Per Shelf* 50 lbs/22.7kg 50 lbs/22.7kg 50 lbs/22.7kg
Permitted Total Load 100 lbs/45kg 200 lbs/91kg 200 lbs/91kg

*Extra standard and reinforced shelves available.

  SMO1 SMO3 SMO5
Order Model Number, Voltage Specific SMO1 SMO1-2 SMO3 SMO3-2 SMO5 SMO5-2
Electrical, 50/60Hz, AC, 1Ø
Voltage 110V-120V 220V-240V 110V-120V 220V-240V 110V-120V 220V-240V
Full Load Amps 12 8 14 10 14 10
Nominal Power (watts @150°C) 650 650 675 675 700 725
Recommended Breaker, Amps 15 15 15 15 15 15
NEMA Plug Supplied 5-15P 6-15P* 5-15P 6-15P* 5-15P 6-15P*
Energy Consumption (kWh/day)
At 80°C 6.5 5.7 7.2 6.5 7.5 6.7
At 150°C 12.4 11.8 13.1 12.2 13.5 12.7
At 306°C 19.8 18.8 23.5 22.1 23.8 22.7
Temperature Range 20°C above ambient to 306°C
Heat-Up from (22 ± 3)°C Ambient — Minutes to 80°C 8 8 6 6 9 6
Heat-Up from (22 ± 3)°C Ambient — Minutes to 150°C 20 20 27 15 28 28
Heat-Up from (22 ± 3)°C Ambient — Minutes to 306°C2 52 52 124 57 130 80
Recovery after Door Opening (30 sec.) — Minutes to 80°C 1.5 2.5 1.5 1 2 2
Recovery after Door Opening (30 sec.) — Minutes to 150°C 4.5 3.5 2 1.5 4 3
Recovery after Door Opening (30 sec.) — Minutes to 306°C 14 7 18 5.5 45 20
Recovery after Door Opening (60 sec.) — Minutes to 80°C 4 3 2 2 3.5 3
Recovery after Door Opening (60 sec.) — Minutes to 150°C 6 4.5 4.5 3.5 6 5.5
Recovery after Door Opening (60 sec.) — Minutes to 306°C 20 9 36 11 57 26
Temperature Uniformity
At 80°C 1°C 0.75°C 1°C 0.75°C 0.75°C 0.75°C
At 150°C 2.25°C 1.750°C 1.750°C 2.50°C 1.750°C 1.5°C
At 306°C 4.7°C 4°C 5°C 5°C 4.5°C 3.5°C
Ventilation
Air Changes/Hr @80°C 330 330 225 225 180 180
Velocity 5.6 cfm 5.6 cfm 11.3 cfm 11.3 cfm 15.2 cfm 15.2 cfm

*Both NEMA 6-15P, 2.5M and CEE7/7 (EU1-16P), 2.5M are supplied with 220V-240V models.