4 Cubic Foot Criterion Series Compact Temperature Cycling Chamber


Item Value
Specifications are for reference only. Please contact ESPEC for detailed information.
Product Family Compact Temperature Cycling
Interior Volume 4 cu. ft.
110 Liters
Interior Dimensions (W x D x H) 19.6" x 15" x 23.6"
500 x 380 x 600 mm
Exterior Dimensions (W x D x H) 31" x 41.5" x 74"
788 x 1055 x 1880 mm
Temperature Range -70 to 180°C
-94 to 354°F
Average Change Rate
(rates lower with 50Hz power)
-45 to 155°C (Empty)
Power 208/230V 1ph 50/60Hz 54A max
Heat-to-room Peak 35,000 BTU/Hr.
Maximum Sound Level (1 meter away) 76 dBA dBA
Temperature Fluctuation (at control sensor) ±0.5
Live Load Capacity 500W at -40°C
Air Flow 200 CFM
Refrigeration - Type cascade
Refrigeration System Cascade 3hp Scroll
“Price Rank”

(Comparing to all other models ranked.
Lower Number = Lower Price)

#30 out of 102 ranked


  • P-300 touch-screen programmer with USB port
  • High performance, reliable Copeland Scroll compressors*
  • Lower sound levels, even for air-cooled models (click on model numbers to see specs)
  • One 4" (100mm) diameter cable port with flexible silicone plug
  • Heavy-duty casters with adjustable feet for leveling unit
  • Refrigeration gauges and hinged service panels for easy maintenance
  • Non-metallic thermal break around the doorframe for thermal integrity
  • Dew tray on the door to catch drips when opened
  • Adjustable stainless steel shelf with heavy-duty support rails, supports 100 lbs.

* Models without 'L' suffix have Copeland Discus compressors


  • Stainless steel exterior and interior
  • Rounded interior corners for easy cleaning
  • Full thermal break around doorframe and door
  • Rotating door latch is easy and secure
  • Dual-layer insulation of fiberglass and expanded foam for thermal integrity
  • One 2" (50mm) diameter cable port on the left, with an impervious, flexible silicone plug
  • Easy lift-off service panels
  • Pressure relief port to allow air volume changes due to rapid temperature changes
  • Three levels of overheat protection


  • Popular PID controller with touch-screen operation
  • Stores 40 different profiles 
  • Step types include: ramp, soak, jump, auto-start, and end
  • Ethernet interface for remote monitoring and operation


  • Dry air purge, to compensate for quickly shrinking air during cooling, as well as to reduce risk of condensation.
  • Product temperature control, allows feedback from a second sensor on the product. Ensures faster completion of transition steps.

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