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High Temperature
Bench Ovens

BULLETIN
BH-210

800°F AND 1000°F
HIGH TEMPERATURE
BENCH OVENS


 


Designed to fill the need for economically priced ovens for medium and high temperature processes, such as tempering and stress relief.

STANDARD FEATURES Back to Top

—304 Stainless steel interior
—Incoloy sheathed tubular heating elements
—Sturdy welded steel construction
—High temperature, resilient door gasket with stainless steel spring insert
—Analog, thermocouple actuated, temperature controller
—Adjustable, thermocouple actuated, manual reset excess temperature Interlock
—On-off heat switch
—Red pilot light indicates heater operation
—Brushed stainless steel exterior
—6 lb/cf density industrial rockwool insulation
—3-wire cord and plug on 115 volt models
—Fully factory tested
—1 year limited warranty


MODEL NT-800
Provides 4.3 cubic feet of work space at temperatures to 800°F. Double doors for easy loading of large parts or baskets. Includes 304 stainless steel interior and two (2) removable nickel plated wire shelves easily adjustable on 2" centers. Holds a maximum of six (6) shelves. Widely used for medium temperature applications such as tempering and relieving hydrogen embrittlement from plated parts.

MODEL NTR-800
Identical to Model NT-800, but also includes a recirculating blower to improve temperature uniformity and reduce heat-up time of oven and parts.

MODEL NT-1000
Similar to Model NT-800, but provides temperatures to 1000°F. Includes 304 stainless steel interior and two (2) removable 304 stainless steel shelves. Ideal for high temperature processes such as preheating prior to welding or stress relief of steel springs and stampings.

MODEL NTR-1000
Same as Model NT-1000, plus recirculating blower system to improve temperature uniformity and reduce heat-up time of oven and parts.

 

   
SPECIFICATIONS Back to Top
NOT FOR USE WITH FLAMMABLE SOLVENTS OR VAPORS. OTHER MODELS
AVAILABLE FOR THESE APPLICATIONS–PLEASE CONSULT FACTORY
Model
Work Space
Outside
Dimensions
(WxDxH)
Maximum
Temperature
Insu-
lation
Watts
Operating Characteristics†
Approx
Shipping
Weight
Dimensions
(WxDxH)
Volume
Cu Ft
115V*
208V
230V
Control
Accuracy
Oven
Uniformity
Rise Time
115V 230V
NT-800 26" x 22" x 13" 4.3 39.5" x 34" x 30" 800°F 4" 2400 3000 ± 0.5% ± 20°F 60 min 45 min 310 lbs
NTR-800 26" x 22" x 13" 4.3 39.5" x 34" x 30" 800°F 4" 2400 3000 ± 0.5% ± 15°F 55 min 40 min 310 lbs
NT-1000 26" x 22" x 13" 4.3 41.5" x 35" x 31" 1000°F 5" 2400 3000 ± 0.5% ± 25°F 105 min 75 min 335 lbs
NTR-1000 26" x 22" x 13" 4.3 41.5" x 35" x 31" 1000°F 5" 2400 3000 ± 0.5% ± 20°F 95 min 65 min 335 lbs
  *Requires 30 ampere service on 115 volts.   †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, exhaust rate and application. See Bulletin TC-920 for additional details.
STANDARD EQUIPMENT   Back to Top
Standard Electrical Characteristics
— 115 volts, 60 Hz, 3-wire cord with plug
— 208 volts, 1-phase, 60 Hz
— 230 volts, 1-phase, 60 Hz
— Other electrical characteristics available

Standard Temperature Control System
Analog, thermocouple actuated, main temperature controller regulates desired oven temperature. Independent manual reset excess temperature interlock, adjustable over temperature range of oven, protects against failure of main temperature controller. Separate heating element relay protects against failure of main control relay. On-off switch located on panel controls electrical power to oven. Red pilot light indicates heater operation.

 


Circulation Diagrams
(Front View)

NT Series
Heated air rises by natural convection
from heating element beneath drip pan at
bottom of work space.

 

NTR Series
Air is pulled from work space by
recirculating blower, blown by heating
element and returned to work space
along sides of drip pan.


 

 
ADDITIONAL EQUIPMENT AVAILABLE Back to Top
Additional Shelves, 20 lbs distributed load per shelf, 40 lbs maximum oven load, specify oven model when ordering.


 

Digital Indicating Temperature Controller
, microprocessor based, thermocouple actuated, in lieu of standard controller.
Option DIG2

Digital Timing Temperature Controller, microprocessor based, digital indicating, incorporates 99 hour 59 minute timer. Starts timing when temperature reaches set point and shuts down oven heat at end
of set time.
Option DTS2

Programmable Temperature Controller
, microprocessor based, digital indicating, thermocouple actuated, in lieu of standard controller.
Option PTC2

Recording Thermometer, thermocouple actuated, 24-hour, 10" diameter circular chart used in conjunction with standard controller (side mounted).
Option RT

Solid State Relay,in lieu of standard contacter.
Option SSR

Shut Down Timer, with continuous "hold" feature
60 minute range.
12 hour range.
Option BTMR60
Option BTMR12

Oven Stand, raises unit to convenient 31" work level Shipped separately, requires assembly.
Option STNDNT

Exhaust Chamber Adapter, to fit standard 3" stove pipe. Shipped separately, requires assembly.
Option BEXCH

 

 
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Specifications Subject to Change Without Notice
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