BTZ-4200 Specifications
Compact Temperature Cycling BTZ-4200
Interior Volume 4 cu. ft.
110 Liters
Interior Dimensions
(W x D x H)
19.6" x 15" x 23.6"
498 x 381 x 600 mm
Exterior Dimensions
(W x D x H)
31" x 45" x 67"
788 x 1055 x 1880 mm
Temperature Range -70 to 180°C
-94 to 356°F
Average Change Rate
(lower with 50Hz power)
-45 to 155°C (Empty)
Power 208/230V 1ph 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)
Live Load Capacity 500W at -40°C
Air Flow 200 CFM
Refrigeration - Type cascade
Refrigeration System Cascade 3hp Scroll
“Price Rank” #21 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.

BTZ-4200 Brochure

More detail about this model at its product family page: Compact Temperature Cycling

BTZ-4200: Compact Temperature Cycling Features

  • 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

Watlow F4T Programmer/Controller

  • 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

Recommended Options

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

More detail about this model at its product family page: Compact Temperature Cycling

Photo of BTZ-4200
Photo of BTZ-4200

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

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Contacting ESPEC

Call Sales:

877-463-7732 or
+1 616-896-6100 (8-5 EST)
Find & call your local sales rep

Product Support:

+1 616-896-6170 (8-5 EST)
Denver/Qualmark: +1 303-254-8800
Support request form

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Qualmark and its product line is now a part of ESPEC North America.
Read the details: ESPEC North America Inc. and Qualmark Corporation Merge (Jan. 2018)