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Digital Control
Bench Ovens

BULLETIN
BH-252

DIGITAL DISPLAY
MICROPROCESSOR CONTROLLED
GRAVITY AND FORCED

 CONVECTION BENCH OVENS


 

Grieve bench ovens with microprocessor temperature control are designed for the laboratory requiring the unmatched accuracy and precision of microprocessor technology in a conveniently sized unit. They provide excellent uniformity and temperature control, rapid rise and recovery times.

STANDARD FEATURES Back to Top

—Microprocessor temperature control
—Built in timer
—Digital set point guarantees repeatable settings
—Large digital display of set point and oven temperature
—Easy access doors can be opened over 180°
—Flexible shelving system
—2 year limited warranty
—Energy efficient
—Space saving footprint
—Audible and visual overtemperature alarm
—Rounded interior corners for easy cleaning
—RS-232 interface
—Coated steel exterior
 or  Marked


STANDARD CONTROL OVEN
—Temperatures 50°C (122°F) to 250°C (482°F)
—Manual fresh air damper
—Exhaust port can be used for test leads
—Galvanized steel interior

ADVANCED CONTROL OVEN
—Temperatures 50°C (122°F) to 330°C (626°F)
—Start/Stop timer weekly or 24 hr
—Electrically controlled fresh air damper
—Access port for test leads
—Adjustable fan speeds
—Programmable controller
—Contacts for remote alarm
—Connection for optional sample temperature sensor
—Boost function for accelerated heat-up
—Stainless steel interior


G SERIES
Gravity convection ovens are ideal when temperature uniformity is less critical or when drying samples, such as fine powders, that require very low turbulance airflow. Natural convection can be enhanced by adjusting top and bottom vents. Choices of capacities vary from 2.1 to 6.0 cubic feet.

F SERIES
Forced air convection ovens feature a multispeed fan system for improved performance. An ideal choice when temperature uniformity and control are important considerations. The blower gently circulates heated air throughout the chamber improving temperature uniformity and control. This forced convection also reduces heat-up and recovery time. Choices of capacities vary from 2.2 to 5.9 cubic feet.

 

   
SPECIFICATIONS Back to Top
NOT FOR USE WITH FLAMMABLE SOLVENTS OR VAPORS. OTHER MODELS
AVAILABLE FOR THESE APPLICATIONS–PLEASE CONSULT FACTORY
STANDARD CONTROL SYSTEM

Model
Work Space
Outside
Dimensions
(WxDxH)
Max
Temp
Convection
Insu-
lation
Watts
Operating Characteristics†
Shelf
Positions
Approx
Shipping
Weight
Dimensions
(WxDxH)
Volume
Cu Ft
Oven
Uniformity
Temperature
Stability
Rise Time
GSA-250 13"x16"x19" 2.3 21"x22"x28" 250°C Gravity 2" 1800 ± 4.5°C ± 0.40°C 25 min 13 121 lbs
GSB-250 17"x16"x23" 3.5 25"x22"x32" 250°C Gravity 2" 3100 ± 4.5°C ± 0.40°C 25 min 16 143 lbs
GSC-250 17"x23"x27" 6.0 25"x29"x36" 250°C Gravity 2" 3100 ± 4.5°C ± 0.50°C 25 min 19 190 lbs
FSA-250 14"x14"x20" 2.4 21"x22"x28" 250°C Fan 2" 1400 ± 3.7°C ± 0.30°C 20 min 13 121 lbs
FSB-250 18"x14"x24" 3.6 25"x22"x32" 250°C Fan 2" 3060 ± 3.0°C ± 0.30°C 20 min 16 148 lbs
FSC-250 18"x21"x28" 5.9 25"x29"x36" 250°C Fan 2" 3060 ± 3.5°C ± 0.30°C 20 min 19 190 lbs
  †Uniformity and temperature stability measured at 150C. Rise time measured from 25C to 150C. Tests run with empty oven and minimum exhaust. Performance will vary with load, exhaust rate and application.
ADVANCED CONTROL SYSTEM

Model
Work Space
Outside
Dimensions
(WxDxH)
Max
Temp
Convection
Insu-
lation
Watts
Operating Characteristics†
Shelf
Positions
Approx
Shipping
Weight
Dimensions
(WxDxH)
Volume
Cu Ft
Oven
Uniformity
Temperature
Stability
Rise Time
GAA-330 13"x15"x19" 2.1 21"x22"x28" 330°C Gravity 2" 1800 ± 3.0°C ± 0.30°C 25 min 13 123 lbs
GAB-330 17"x15"x23" 3.2 25"x22"x32" 330°C Gravity 2" 3100 ± 3.0°C ± 0.30°C 25 min 16 152 lbs
GAC-330 17"x22"x27" 5.5 25"x29"x36" 330°C Gravity 2" 3100 ± 3.5°C ± 0.40°C 25 min 19 190 lbs
FAA-330 14"x13"x20" 2.2 21"x22"x28" 330°C Fan 2" 1400 ± 2.0°C ± 0.25°C 20 min 13 126 lbs
FAB-330 18"x13"x24" 3.3 25"x22"x32" 330°C Fan 2" 3060 ± 1.5°C ± 0.25°C 20 min 16 143 lbs
FAC-330 18"x20"x28" 5.9 25"x29"x36" 330°C Fan 2" 3060 ± 2.0°C ± 0.25°C 20 min 19 190 lbs
  †Uniformity and temperature stability measured at 150C. Rise time measured from 25C to 150C. Tests run with empty oven and minimum exhaust. Performance will vary with load, exhaust rate and application.
STANDARD EQUIPMENT   Back to Top
Standard Electrical Characteristics
— 120 volts, 60 Hz, Marked
— 208-240 volts, 60 Hz, Marked
— 230 volts, 50-60 Hz,Marked


Standard Equipment
— Rounded interior corners
— RS232 Interface
— Built in timer
— Two (2) 55 lb uniformly distributed load capacity, stainless steel wire shelves

Standard Control Oven
Optimally suited to everyday heating and drying applications up to 250C. Temperatures as low as ambeint + 10C can be selected - requires open damper and no heat input from load.

Advanced Control Oven
Provides the necessary features for users requiring highest accuracy and increased heating capability up to 330C. Also provides the ability to select one of two fan speeds to accommodate process. Programmable dwell times (ramp times are not programmable).

G SERIES

Gravity Convection
Heat is transferred by gravity convection from heater at bottom rising up through the oven chamber to vents at top.

F SERIES
Forced Air Convection
Includes forced air circulation for improved temperature uniformity, large moist loads, or to speed up drying times. Heated air is gently forced to both sides of the oven chamber where it exits through openings in the sidewall plenums. It circulates through the oven, is drawn to the center of the chamber, reheated and recirculated. Exhaust is through a vent in the top of the oven.


Circulation Diagrams


(Front View)
G
Series (Gravity)


(Top View)
F Series (Fan)

 
ADDITIONAL EQUIPMENT AVAILABLE Back to Top
Additional Shelves, 55 lbs distributed load per shelf, 110 lbs maximum oven load, specify oven model when ordering.


  

 

 
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Specifications Subject to Change Without Notice
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