The Widest Selection of
Humidity Chambers
   
 
Benchtop stability chambers

Compact environmental chambers with inner glass doorsFor the ultimate in humidity testing in a compact size, ESPEC introduces the BTL-433 humidity chamber with the improved features and expanded capabilities.

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 extended temperature and humidity ranges make testing at more extreme conditions possible.

The vertical configuration saves bench space, plus the refrigeration’s ventilation design allows installation against a wall for even more space savings.

Features include:

  • Stainless steel exterior and durable thermoformed plastic door
  • Full thermal break around doorframe
  • One 50mm (2") diameter cable port on left, with flexible silicone plug
  • Three levels of overheat protection
  • 115V main power with detachable eight-foot power cord
  • High performance and quiet operation (65 dBa)
  • Easy lift-off service panels

WATLOW F4 PROGRAMMER/CONTROLLER

  • Popular PID controller for test chambers
  • Stores 40 different profiles (total 256 steps)
  • Step types include: ramp, soak, jump, auto-start, and end
  • RS-232C Modbus interface (free standard software)
  Temperature range Humidity range Interior volume Interior dimensions
(W x D x H)
BTL-433
-20 to 180°C
-4 to 354°F
10 to 95%
(see chart below)
4 cu. ft.
110 Liters
19.6" x 15" x 23.6"
500 x 380 x 600 mm

Exterior: 29" x 34" x 46" (740 x 850 x 1150 mm)

BTL-433 Criterion humidity range
Suitable for 23°C/50%, 40°C/75% and 85°C/85% tests

Options available:

  • Viewing window (shown above)
  • Ethernet/computer interface with software
  • Paperless recorder with display, CompactFlash memory, and Ethernet connection
  • Strip chart or circular chart recorders
  • Stainless steel wire shelves
  • Cart with casters
  • Water supply tank
  • Water filter cartridge system
  • Cable ports for running in wires: 25mm, 50mm, or 100mm diameter (one 50mm is included)

ESPEC Expertise in Humidity Control

Controlling humidity in a small chamber can be especially challenging. ESPEC expertise in humidity control brings intelligent design that is carefully integrated into the BTL-433. The humidity subsystems are designed for reliability, convenience, and performance:

  • An external steam generator allows expanded range and is easy to maintain.
  • A separate de-humidification coil improves low humidity control and range.
  • Wet-bulb humidity sensor “primary measurement method” for accuracy. It is also economical, easy to maintain, and reliable because it has no risk of failure due to over-saturation. (Read why analog is preferred over digital.)
  • Direct water supply connection is standard for continuous operation, with options for water filtering and recirculating water tank.

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Related Information
Need something larger? See our ZoneOne.
PDF Brochure for the BTL-433