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| Temperature
Range |
-73°C
to +175°C |
| Control
Tolerance |
±0.2°C (Measured
at the control sensor after stabilization) |
| Uniformity |
±1.0°C (Variations
throughout the chamber after stabilization) |
Cool Down Transition
Time (empty)* |
| Start
Temp |
End Temp |
| +23°C |
0°C |
-20°C |
-40°C |
-55°C |
-65°C |
| +23°C |
----- |
1.5
min |
7.5
min |
11
min |
14
min |
18
min |
| +85°C |
8
min |
13
min |
19
min |
25
min |
33
min |
37
min |
| +150°C |
23
min |
30
min |
37
min |
45
min |
53
min |
60
min |
| |
| Cool Down Transition
Time (with 80 lb. aluminum load)* |
| Start
Temp |
End Temp |
| +23°C |
0°C |
-20°C |
-40°C |
-55°C |
-65°C |
| +85°C |
15
min |
26
min |
35
min |
48
min |
59
min |
68
min |
| +150°C |
32
min |
41
min |
50
min |
61
min |
69
min |
76
min |
| |
Heat Up Transition Time
(empty)* |
| Start
Temp |
End Temp |
| +23°C |
+50°C |
+85°C |
+125°C |
+150°C |
+175°C |
| +23°C |
----- |
1.5
min |
7
min |
14
min |
20
min |
Ultimate |
| 0°C |
1.5
min |
3.5
min |
13
min |
20
min |
23
min |
Ultimate |
| -40°C |
6
min |
11
min |
17
min |
24
min |
30
min |
Ultimate |
| -55°C |
8
min |
13
min |
19
min |
26
min |
32
min |
Ultimate |
| -65°C |
10
min |
14
min |
21
min |
28
min |
34
min |
Ultimate |
| |
Heat Up Transition Time
(with 80 lb. aluminum load)* |
| Start
Temp |
End Temp |
| +23°C |
+50°C |
+85°C |
+125°C |
+150°C |
+175°C |
| 0°C |
5
min |
13
min |
23
min |
36
min |
45
min |
Ultimate |
| -40°C |
11
min |
19
min |
29
min |
42
min |
51
min |
Ultimate |
| -65°C |
22
min |
32
min |
44
min |
61
min |
71
min |
Ultimate |
Rate Of Change
To calculate rate of change for a particular condition, take the
difference between the Start Temp and End Temp and divide by the
Transition Time.
Cool Down Example (empty): From +85°C to -40°C = 125°C /
21 min = 5.95°C/min.
Cool Down Example (with 80 lb. load): From +85°C to -40°C
= 125°C / 48 min = 2.6°C/min.
Heat Up Example (empty): From -40°C to +85°C = 125°C / 17
min = 7.35°C/min.
Heat Up Example
(with 80 lb. load): From -40°C to +85°C = 125°C / 29 min =
4.3°C/min.
*Note: Transition
times are measured after a 2 hour soak at the respective start
temperature at 208 V input. |
| Live
Load Capacity |
| +23°C |
0°C |
-20°C |
-40°C |
-55°C |
-65°C |
| 2,900
Watts |
2,600
Watts |
2,300
Watts |
1,750
Watts |
1,450
Watts |
1,050
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 |
4,000
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 |
40"
W x 32" H x 36.5" D (27 cubic feet) |
| Outside
Dimensions |
49"
W x 73.25" H x 63" D (nominal)
Door latch adds 3" to width on right side. Circulator motor
and housing adds 6" to height - may be removed for move-in. |
 |
| Minimum
Installed Clearance |
18"
from the left and right side
24" from the rear |
| Window
Viewing Area |
16"
W x 13" H |
| Access
Ports |
4"
Port on left and right side (two total)
Supplied with foam plugs |
| Weight |
Chamber
Weight: 1,600 pounds
Shipping Weight: 2,000 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. |
|
