TestEquity 1027C Temperature Chamber

Temperature Range: -73°C to +175°C
Controller Tolerance: ±0.2°C (Short-term variations measured at
the control sensor after stabilization)
Uniformity: ±1.0°C (Variations throughout the chamber after
stabilization)
High Stage Refrigerant: R-404A
Low Stage Refrigerant: R-508B
Compressors: 3.5 HP x 3.5 HP Copeland scroll compressors in a
cascade configuration
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
Air Flow: 630 cfm
Chart Recorder: (Option) Honeywell DR4300 Series. One pen,
10" circular chart. Mounts in lower front door
INPUT Power: 208/230V, 25/29 A Max. 3 Phase, 60 Hz

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.

Physical Characteristics and Safety:
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
Weight: 1560 lbs (shipping weight: 1744 lbs)