BTU-133 Specifications
Criterion Benchtop BTU-133
Interior Volume 1.5 cu. ft.
42 Liters
Interior Dimensions
(W x D x H)
19.6" x 11" x 12"
500 x 280 x 300 mm
Exterior Dimensions
(W x D x H)
30.25" x 33.5" x 34"
770 x 850 x 865 mm
Temperature Range -20 to 180°C
-4 to 354°F
Average Change Rate
(lower with 50Hz power)
2°C/min heating
1.6°C/min cooling
 (-15 to 160°C empty chamber, per IEC 60068 3-5, at supply sensor)
Power 115V 1ph 60Hz 20A A max
Heat-to-room Peak 3,600 BTU/Hr.
Maximum Sound Level
(1 meter away)
65 dBA
“Price Rank” #1 out of 21 ranked

“Price Rank” compares to other models in this product category. The lower the ranking, the lower the price. Specifications are for reference only. Please contact ESPEC for detailed information and pricing.


This model is built to order with features/options as requested. Customization possible. Request a quote for current lead-time information.

Criterion Benchtop Brochure

More detail about this model at its product family page: Criterion Benchtop

BTU-133: Criterion Benchtop Features

  • High performance and quiet operation (65 dBa)
  • Space-saving footprint, designed for flush installation to wall
  • Stainless steel exterior
  • Full thermal break around doorframe
  • One 50mm (2”) diameter cable port on left, with flexible silicone plug
  • Three levels of overheat protection, plus overcool protection
  • Easy lift-off service panels, electrical access on left
  • Detachable eight-foot power cord with plug
  • Humidity models include direct water supply connection for continuous operation (supply tank optional)
  • ETL listed electrical panel conforming to UL 508A

Touch-screen programmer/controller with Ethernet

  • Watlow F4T with touch-screen and Ethernet port standard
  • Save 40 profiles with up to 50 steps each (ramp, soak, jump, auto-start, end)
  • One event relay for external device control, plus specimen power interlock relay for safety
  • ESPEC exclusive options include: Web Controller for full remote access; Chamber Connect software for basic data logging and monitoring. USB and RS-485 ports available, as well.

More detail about this model at its product family page: Criterion Benchtop

Photo of BTU-133
Photo of BTU-133

Photos are for reference only, and may show optional features. Please contact ESPEC for detailed information and pricing.

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