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| Temperature
Range |
-73°C
to +175°C |
| Control
Tolerance |
±0.5°C (Measured
at the control sensor after stabilization) |
| Uniformity |
±1.0°C (Variations
throughout the chamber after stabilization) |
| Ramp
Rates With an Empty Chamber |
| Cooling Rate, Compressors Only* |
| Start
Temp |
End Temp |
| +23°C |
0°C |
-40°C |
-55°C |
-65°C |
-73°C |
| +85°C |
18°C/minute |
14°C/minute |
12°C/minute |
11°C/minute |
10°C/minute |
Ultimate |
| +150°C |
16°C/minute |
15°C/minute |
12°C/minute |
11°C/minute |
10°C/minute |
Ultimate |
| Cooling Ramp Rate with LN2 Boost and Compressors* 20°C/minute
from +85°C to -40°C |
| Heating Ramp Rate* 17°C/minute
from -40°C to +85 °C |
| * Note: Ramp rates are measured
at the control sensor after a 2 hour soak at the respective start
temperature with an empty chamber. Measured with setpoint set
beyond the start and end temperatures. Does not include the effect
of proportional band when approaching setpoint. |
| Ramp Rates With a 25
Pound Aluminum Load |
| Cooling Rate, Compressors Only* |
| Start
Temp |
End Temp |
| +23°C |
0°C |
-40°C |
-55°C |
-65°C |
-73°C |
| +85°C |
14°C/minute |
10°C/minute |
8°C/minute |
7°C/minute |
6°C/minute |
Ultimate |
| Cooling Ramp Rate with LN2 Boost and Compressors* 13°C/minute
from +85°C to -40°C |
| Heating Ramp Rate* 12°C/minute
from -40°C to +85 °C |
| * Note: Ramp rates are measured
at the control sensor after a 2 hour soak at the respective start
temperature with an empty chamber. Measured with setpoint set
beyond the start and end temperatures. Does not include the effect
of proportional band when approaching setpoint. |
| Live Load Capacity |
| +23°C |
0°C |
-20°C |
-40°C |
-55°C |
-65°C |
| 3,700 Watts |
3,500 Watts |
3,300 Watts |
2,700 Watts |
2,300 Watts |
1,800 Watts |
Refrigeration
and Heating System |
| High
Stage Refrigerant |
R-404A
(Dupont HP-62) |
| Low
Stage Refrigerant |
R-508B
(Dupont SUVA-95) |
| Compressors |
3.5
HP x 3.5 HP Copeland scroll compressors in a cascade configuration
More about Scroll Compressors >> |
| Condenser |
Air
Cooled |
| Heat
of Rejection |
27,500
BTUH (maximum rated chamber load at maximum cooling rate from high
temperature soak) |
| Heater
Power |
6,000
Watts @ 208 V input |
| |
Instrumentation |
| Temperature
Controller |
256
step, 40 profile, ramp and soak programmable memory. RS-232 interface.
More details >> |
 |
| Limit
Controller |
Independent
high and low temperature limits. Triggers an audible alarm and
shuts down the chamber. Relay contacts provide a safety power interlock
for test sample. |
| Chart
Recorder |
(Optional)
Honeywell DR4300 Series. One pen, 10" circular chart. Mounts in
lower front door. |
 |
| Input
Power Requirements |
| 230
V ±10%, 60 Hz, 3 Phase |
Max
Current Draw 39 A; Recommended Service 50 A |
| 208
V -5/+10%, 60 Hz, 3 Phase |
Max
Current Draw 35 A; Recommended Service 45 A |
| |
Input
may be configured for 230 V or 208 V in the field by changing
jumpers. Three phase load is balanced. Call for other voltages
or 50 Hz operation.
Customer power
source must be hard-wired to the chamber by a qualified electrician.
Power cord and plug is not included. |
| |
Physical
Characteristics |
| Inside
Dimensions |
24" W x 21" H x 24" D
(7 cubic feet)
609 mm W x 533 mm H x 609 mm D (198 liters) |
| Outside
Dimensions |
33" W x 79" H x 54.25" D
(nominal)
838 mm W x 1721 mm H x 1378 mm D
Door latch adds 3" to width on right side, may be removed for move-in. |
| Minimum
Installed Clearance |
18"
from the left and right side
24" from the rear |
| Window
Viewing Area |
13.5"
W x 11.5" H |
| Sound
Level |
71 dBA in cooling mode (A-weighted, measured 36" from the front surface, 63" from the floor, in a free-standing environment) |
| Access
Ports |
4"
Port on left and right side (two total)
Supplied with foam plugs |
| Weight |
Chamber
Weight: 1,200 pounds
Shipping Weight: 1,600 pounds |
NOTE: Performance
is typical and based on operation at 23°C (73°F) ambient and
nominal input voltage. Designed for use in a normal conditioned
laboratory. Operation at higher ambient temperatures may result
in decreased cooling performance. Additional ports and shelves
will also affect performance. Operation above 30°C (85°F) or
below 16°C (60°F) ambient is not recommended.
Due to continuous product improvements, specifications subject
to change without notice. |
|
