humidity and temperature test chamber / bench-top
10 - 95% | BTL-433, BTX-475 ESPEC NORTH AMERICA



  • Type:

    humidity and temperature

  • Options and accessories:


  • Temperature:

    Max.: 180 °C (356 °F)

    Min.: -70 °C (-94 °F)


The Criterion temperature/humidity chamber series provides an economical and space-saving solution for a variety of testing requirements. The chamber's interior size is 3.5 inches wider than traditional benchtops, yet the exterior is 20% narrower. The BTL-433 model uses 115V power, meaning no special power hook-ups.

Lowest temperature: -20 or -70°C (-4 or -100°F)
Highest temperature: 180°C (354°F)
Humidity range: 10 to 95% RH
Chamber size: 4 cubic feet
Fully programmable with Watlow F4 controller

The four cubic foot workspace is the largest to be found in a benchtop unit, while requiring less footprint than even smaller comparable chambers. The vertical configuration saves bench space, plus the refrigeration’s ventilation design allows installation against a wall for even more space savings.