Forced Convection Bench Ovens
Forced Convection Bench Ovens
Economical ovens easily moved to various locations. For processing large parts, baking, drying components after cleaning, dehydration, preheating, curing and other applications requiring circulation of heated air.
Forced Convection Bench Ovens Model Specifications:
Not for use with flammable solvents, vapors, or gases. Other models are available for these applications.
| Model | Workspace | Outside Dimensions*(WxDxH) | Max Temp | Blower | Heat Input | Insulation Thickness | Operating Characteristics† | Approx Shipping Weight | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dimensions(WxDxH) | VolumeCu Ft | CFM | HP | ElectricKW | GasBTU/HR | Control Accuracy | Temperature Uniformity | Rise Time (Electric) | Rise Time (Gas) | |||||
| NB-350 | 28" x 24" x 18" | 7 | 41" x 30" x 23" | 350°F | Not Available | NA | 2 | Not Rated | 2" | ±0.3% | ±10°F | 17 | Not Available | 210 lbs |
| NB-550 | 26" x 22" x 16" | 5.3 | 41" x 30" x 23" | 550°F | Not Available | NA | 2.4 | Not Rated | 3" | ±0.3% | ±15°F | 32 | Not Available | 235 lbs |
| DR-350 | 12" x 25" x 2" | 0.3 | 41" x 30" x 23" | 350°F | Not Available | NA | 2 | Not Rated | 2" | ±0.3% | ±25°F | 20 | Not Available | 285 lbs |
*Outside Dimensions
- Click here for DR-350 dimensions
- Click here for NB-350, NB-550 dimensions
- Heat input footnote:
- Specifications chart above utilizes 115V; for 208V and 230V, reference the below:
- NB-350: 2.0 kW
- NB-550: 3.0 kW
- DR-350: 2.0 kW
- Specifications chart above utilizes 115V; for 208V and 230V, reference the below:
† Operating Characteristics
- Accuracy as percent of controller span.
- Uniformity at 50°F below maximum temperature.
- Rise Time in minutes to 50°F below maximum temperature.
- Tests run with empty oven and minimum exhaust.
- Performance will vary with load and application.
- See Control & Instrumentation Summary for additional details.
Specifications for Forced Convection Bench Ovens
| MODEL | NB-350 |
|---|---|
| MAXIMUM OPERATING TEMP | 350°F |
| AIR FLOW | Forced Convection, Side to Side |
| CONTROL ACCURACY | ±0.3% |
| OVEN UNIFORMITY | ±10°F |
| RISE TIME - ELECTRIC | 17 mins |
| RISE TIME - GAS | Not Rated |
| WORKS SPACE DIMENSIONS (WxDxH) | 28" x 24" x 18" |
| SHELVES INCLUDED | 2 |
| NUMBER OF SHELVES MAX | 7 |
| SHELF CAPACITY | 20 |
| MAX LOAD CAPACITY | Not Available |
| DOORS | Manual |
| LOADING METHOD | Shelf |
| APPROXIMATE SHIP WEIGHT | 210 lbs |
| OUTSIDE DIMENSIONS (WxDxH) | 41" x 30" x 23" |
Standard Features for Forced Convection Bench Ovens
Certifications
- Meets the Requirements of the Following Standards:
- NFPA 86 (Standard for Ovens and Furnaces)
- NFPA 70 (National Electric Code)
- OSHA
- Caution:
- When processing combustible material fire protection should be considered
- Processing flammable solvents or vapors requires forced exhaust to provide safety ventilation. For more information see Class A Solvent Processing page at this website
Safety Equipment
- Hydraulic manual reset excess temperature interlock disconnects power to heaters if maximum oven temperature is exceeded
- Electrical interlock shuts off heat if recirculating blower is turned off
Controls
- Calibrated hydraulic temperature controller
- Red pilot light to indicate heater operation
- On-Off switch
Construction
- 115 volt, 208 volt, 230 volt or 460 volt, 1-phase, 50-60 HZ
- 3-wire cord with plug on 115 volt models (Model NB-550 requires 30 ampere service on 115 volts)
- 3-wire cord only on 208 and 230 volt models
- 460 volt models incoming power hardwired to control panel
- Durable, electrically isolated, Incoloy tubular heating elements
- Heating elements located in heat chamber to prevent radiant heating
- Recirculating blower
- Shelves adjustable on 2” centers
- Model DR-350 includes eight (8) 11-3/4” wide x 25” deep x 2” high (3-1/2” total clearance) drawers with ¾” diameter perforations on 1-1/4” staggered centers; solid drawers available
- Insulated with 6 lbs per cubic foot density rockwool insulation
- 304 stainless steel interior with plated hardware
- Brushed stainless steel exterior
- Silicone rubber door gasket
- Fully assembled and factory tested
- 1 year limited warranty
Modifications & Accessories for Forced Convection Bench Ovens
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Bench Oven Shelf
Oven accessory adding an additional shelf with a maximum distributed load of 20 lbs.
-
Drying Pans
Oven accessory adding eight (8x) drying pans. Made from 304 stainless steel. Requires two additional shelves to fit all pans inside oven.
-
Bench Oven Stand
Oven modification adding a Bench Oven Stand that raises a unit to a convenient 31″ work level.
-
Dial Thermometer
Oven accessory adding a Dial Thermometer Range of 50 to 550 degrees F, 10 to 290 C
-
Digital Indicating Temperature Controller
Oven modification adding a Digital Indicating Temperature Controller. Microprocessor based, thermocouple actuated, in lieu of standard controller.
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Programmable Temperature Controller
Oven modification adding a programmable Temperature Controller. Microprocessor based, digital indicating, thermocouple actuated, in lieu of standard controller.
-Program Parameters: 40 profiles of up to 50 steps each, a real-time clock with battery backup to allow starting profile at any time of day
-Digital Display, 4.3” color touch screen
-Accuracy, ±0.1% of span plus 1 degree display error
-Connectivity, Relay output for alarm or other notification, two (2) USB ports, Ethernet compatible
Also Available:
-Up to four (4) control channels of temperature, relative humidity or vacuum
-Monitor up to16 sensors
-Math and logic functions
-Digital inputs and outputs
-Data logging
-Graphic Trending
-
Recording Thermometer
Accessory adding a Recording Thermometer. Thermocouple actuated.
- Record: 10″ diameter circular chart 24 hour chart rotation
- Digital Display: 0.56″ high, LED, alphanumeric, 4 digit display; LED status display
- Accuracy: ±0.25%of span plus 1 degree display error
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Digital Excess Temperature Interlock
Oven modification adding an Adjustable Digital Excess Temperature Interlock in lieu of fixed setpoint excess temperature interlock. Digital indicating, thermocouple actuated, manual reset.
- Digital Display, two LED, alphanumeric, 4 digit displays; 0.425″ high for temperature display and 0.275″ high for set point display
- Accuracy, ±0.1% of span plus 1 degree display error
-
Solid State Relay
Oven modification adding a Solid State Relay in lieu of mechanical heater contactor.
Custom Ovens
-
Modified Model NB-550 Bench Oven
Serial #: 76419A0403Window in left door and two access slots in rear wall
- MAX TEMP: 550ºF
- WORKSPACE DIMS (WxDxH): 26" x 22" x 16"
-
Modified Model NB-350 Bench Oven
Serial #: 452418Seven slots with closing damper for curing plugs on ends of cables
- MAX TEMP: 350ºF
- WORKSPACE DIMS (WxDxH): 28" x 24" x 18"
-
Special Bench Oven with Eight Drawers
Serial #: 123253A1018Eight drawers with removable inserts to cure cable end. Work surface in front of drawers.
- MAX TEMP: 350ºF
- WORKSPACE DIMS (WxDxH): 6" x 13" x 6"
