Model 140 Temperature Chamber Specifications
|Cool Down Transition Time*|
|Start Temp||End Temp|
|+23°C||-----||4 min||18 min||25 min||33 min||Ultimate|
|+50°C||5 min||10 min||25 min||34 min||42 min||Ultimate|
|+85°C||12 min||18 min||31 min||38 min||45 min||Ultimate|
|+150°C||25 min||32 min||45 min||51 min||58 min||Ultimate|
|Heat Up Transition Time*|
|Start Temp||End Temp|
|+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|
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: From +85°C to -40°C = 125°C / 31 min = 4.03°C/min.
Heat Up Example: From -40°C to +85°C = 125°C / 17 min = 7.35°C/min.
*Note: Transition times are measured after a 2 hour soak at the respective start temperature with an empty chamber, as indicated on the temperature controller, 23°C ambient. Measured with setpoint beyond the start and end temperatures. Does not include the effect of proportional band when approaching setpoint. Performance is reduced by 17% with 50 Hz input power.
Live Load Capacity
|1,000 Watts||800 Watts||500 Watts||400 Watts||300 Watts|
Refrigeration and Heating System
|High Stage Refrigerant||R-404A (Dupont HP-62)|
|Low Stage Refrigerant||R-508B (Dupont SUVA-95)|
|Compressors||1.5 HP x 1.5 HP Tecumseh hermetic compressors in a cascade configuration.|
|Heat of Rejection||14,800 BTUH (maximum rated chamber load at maximum cooling rate from high temperature soak)|
|Heater Power||1,500 Watts (at 208 V input)|
|Temperature Controller||Watlow F4 Controller with RS-232 interface, LED readout of temperature, LCD display of other parameters (standard).
Watlow F4T Touch Screen Controller with RS-232, Ethernet interface, 4.3" color graphic touch screen (optional).
|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.|
Input Power Requirements
|Input Voltage||208 V -5/+10%, 1 PH, or 230 V ±10%, Single Phase, 60 Hz
Max Current Draw 25 A; Required Service 30 A
|Power Cord and Plug||Power cord, 14-feet, with a molded NEMA L6-30P plug|
|Operation at 50 Hz requires internal transformer option TE-0725. Cooling performance is reduced 17% at 50 Hz.|
Physical Characteristics and Safety
|Inside Dimensions||22"W x 18"H x 18"D (4 cubic feet)|
|Outside Dimensions||30"W x 64"H x 42"D (nominal)
Door latch adds 3" to width on right side.
|Minimum Installed Clearance||18" from the left and right side
24" from the rear
|Window Viewing Area||13.5"W x 11.5"H|
|Access Ports||4" Port on left and right side (two total)
Supplied with silicone foam plugs
|Weight||Chamber Weight: 700 pounds
Shipping Weight: 809 pounds
|Sound Level||62 dBA in cooling mode (A-weighted, measured 36" from the front surface, 63" from the floor, in a free-standing environment)|
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. Performance is reduced by 17% at 50 Hz input power.
Due to continuous product development, specifications are subject to change without notice.