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Model 1027C Temperature Chamber Specifications


Temperature Range
-73°C to +175°C
Control Tolerance
±0.5°C (±0.2°C Typical) (Short-term variations measured at the control sensor after stabilization)
Uniformity
±1.0°C (Variations throughout the chamber after stabilization)
 
Cool Down Transition Time (empty)*
Start TempEnd Temp
+23°C0°C-20°C-40°C-55°C-65°C
+23°C-----1.5 min7.5 min11 min14 min18 min
+85°C9 min15 min21 min28 min35 min40 min
+150°C23 min30 min37 min45 min53 min60 min
Cool Down Transition Time (with 80 lb. aluminum load)*
Start TempEnd Temp
+23°C0°C-20°C-40°C-55°C-65°C
+85°C15 min26 min35 min48 min59 min68 min
+150°C32 min41 min50 min61 min69 min76 min
Heat Up Transition Time (empty)*
Start TempEnd Temp
+23°C+50°C+85°C+125°C+150°C+175°C
+23°C-----1.5 min7 min14 min20 min25 min
0°C1.5 min3.5 min13 min20 min23 min31 min
-40°C6 min11 min17 min24 min30 min35 min
-55°C8 min13 min19 min26 min32 min37 min
-65°C10 min14 min21 min28 min34 min39 min
Heat Up Transition Time (with 80 lb. aluminum load)*
Start TempEnd Temp
+23°C+50°C+85°C+125°C+150°C+175°C
0°C5 min13 min23 min36 min45 min55 min
-40°C11 min19 min29 min42 min51 min61 min
-65°C22 min32 min44 min61 min71 min81 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 -40°C = 125°C / 28 min = 4.5 °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 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
+23°C0°C-20°C-40°C-55°C-65°C
2,900 Watts2,600 Watts2,300 Watts1,750 Watts1,450 Watts1,050 Watts

Refrigeration and Heating System


High Stage RefrigerantR-404A (Dupont HP-62)
Low Stage RefrigerantR-508B (Dupont SUVA-95)
Compressors3.5 HP x 3.5 HP Copeland scroll compressors in a cascade configuration
More about Scroll Compressors >>
CondenserAir Cooled
Heat of Rejection27,500 BTUH (maximum rated chamber load at maximum cooling rate from high temperature soak)
Heater Power4,000 Watts @ 208 V input
Air Flow 830 cfm
Instrumentation
Temperature ControllerWatlow F4T Touch Screen Controller with RS-232, Ethernet interface, 4.3" color graphic touch screen. OR...
Watlow F4 Controller with RS-232 interface, LED readout of temperature, LCD display of other parameters.
Limit ControllerIndependent 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 PhaseMax Current Draw 39 A; Recommended Service 50 A
208 V -5/+10%, 60 Hz, 3 PhaseMax 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 50Hz operation. Performance is reduced by 17% with 50Hz input power.


Customer power source must be hard-wired to the chamber by a qualified electrician. Power cord and plug is not included.


Physical Characteristics and Safety

Inside Dimensions40" W x 32" H x 36.5" D (27 cubic feet)
1016 mm W x 813 mm H x 927 mm D (765 liters)
Outside Dimensions49" W x 73.25" H x 63" D (nominal)
1244 mm W x 1860 mm H x 1600 mm D
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 Clearance18" from the left and right side
24" from the rear
Window Viewing Area16" W x 13" H
Access Ports4" Port on left and right side (two total)
Supplied with foam plugs
WeightChamber Weight: 1,560 pounds
Shipping Weight: 1,744 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.


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