Half Cube Model 105A Benchtop Temperature Chamber Specifications
| Cool Down Transition Time (empty)* | ||||||||
| Start Temp | End Temp | |||||||
| +23°C | 0°C | -10°C | -20°C | -30°C | -35°C | -40°C | ||
| +23°C | Standard | ---- | 3 min | 5 min | 7 min | 10 min | 13 min | 22 min |
| 50 Hz Export Version | ---- | 3 min | 5 min | 7 min | 11 min | 15 min | 24 min | |
| +85°C | Standard | 8 min | 13 min | 15 min | 17 min | 20 min | 23 min | 31 min |
| 50 Hz Export Version | 9 min | 14 min | 16 min | 18 min | 21 min | 27 min | 41 min | |
| Heat Up Transition Time (empty)* | ||||||||
| Start Temp | End Temp | |||||||
| +23°C | +50°C | +85°C | ||||||
| +23°C | ----- | 1.5 min | 6 min | |||||
| 0°C | 2 min | 4 min | 7.5 min | |||||
| -20°C | 3 min | 5 min | 8 min | |||||
| -40°C | 4.5 min | 7.5 min | 11 min | |||||
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 -20°C = 105°C / 17 min = 6.18°C/min.
Heat Up Example: From -40°C to +85°C = 125°C / 11 min = 11.36°C/min.
*Note: Transition times are measured after a 30 minute soak at the respective start temperature.
| Live Load Capacity | ||||||
| +23°C | 0°C | -10°C | -20°C | -30°C | -40°C | |
| 200 Watts | 175 Watts | 165 Watts | 145 Watts | 90 Watts | 10 Watts | |
| Refrigeration and Heating System | ||
| Compressor | 1/3 HP Copeland hermetic | |
| Condenser | Air Cooled | |
| Heat of Rejection | 3,000 BTUH (maximum rated chamber load at maximum cooling rate from high temperature soak) | |
| Heater Power | 500 Watts | |
| Instrumentation | ||
| Temperature Controller | 256 steps, 10 profiles, ramp and soak programmable memory. RS-232C interface. Watlow Series F4. More details >> | |
| Limit Controller | Independent of temperature controller. User adjustable high and low temperature limits. Shuts down the chamber if limits are exceeded. | |
| Power Requirements | |
| Input Voltage | Standard Model 105A 120 V nominal (110 to 126 VAC), 60 Hz, 1 PH Max Current Draw 10 A, Recommended Minimum Service 15 A |
| Export Model 105A-EX 230 V nominal (209 to 253 VAC), 50 Hz, 1 PH Max Current Draw 5 A, Recommended Minimum Service 10 A | |
| Physical Characteristics and Safety | |
| Inside Dimensions | 12" W x 9" H x 8" D, 0.5 cubic feet (305 x 229 x 203 mm, 14 liters) |
| Outside Dimensions (nominal) | 16.5" W x 26" H x 20" D (419 x 660 x 508 mm) Door latch adds 2" (51 mm) to width. Circulator motor housing adds 2" (51 mm) to depth in rear |
| Minimum Installed Clearance | 12" (304 mm) from the rear |
| Access Ports | 3" (2.83" inside diameter) Port on left and right side (two total) Supplied with silicone foam plugs |
| Weight | Chamber Weight: 114 pounds (52 kg) Shipping Weight: 140 pounds (64 kg) |
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 will result in decreased cooling performance. Low end limit derates to -38°C when operating above 27°C (80°F) ambient. Operation above 30°C (85°F) or below 16°C (60°F) ambient is not recommended.