Environmental Chamber – KB084

The KB series chambers are a top selling environmental chamber. It is quiet, easy to clean, highly reliable and ideal for laboratory use. It offers hot gas bypass control of refrigeration and resistive heat to facilitate reliable, critical temperature and humidity control. The KB084 is a 3-door environmental chamber. Popular options include chart recorder and TraceLock electronic/audit capable locks. Download Specification

SKU# KB084

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KB Series

The KB series chambers feature hot gas by-pass technology which controls the temperature of the epoxy coated evaporator for greater uniformity. Compressors in our KB series of environmental chambers come with a three year warranty - which is one of the longest in the industry. All of these models run with 0.25 - 0.67hp compressors making them efficient enough to run on 15 amp, 110 volt circuits.

Superior Control and Uniformity

The ultrasonic humidification system provides excellent humidity control and avoids hot spots seen during chamber mapping of steam boiler equipped chambers. Standard control at the sensor in these chambers is ±0.2°C and ±0.3%RH.

Widely Proven, Non-Proprietary Controllers

Standard controllers for the KB Series are manufactured by Fuji Electric and are ideal for environmental testing chambers. Unlike many proprietary controllers, this controller is commercially available and proven in tens of thousands of installations. Standard functions include: autotuning, fuzzy logic, PID control, programmable alarms, calibration capability, offset capability, etc. A touchscreen control interface is optional. Other controller manufacturers are also supported (Watlow, Allen Bradley etc.)

Greatly Reduced Direct and Indirect Energy Loads

The KB Series chambers utilize less energy than comparable stability chambers and introduce less impact upon building cooling systems. This efficiency “dual benefit” allows our chambers to be located in spaces unsuitable for other chambers. Electrical energy savings by the KB series vs. steam boiler equipped chambers can easily amount to hundreds or thousands of dollars saved per year.

Services and Warranties

We offer technical support throughout the lifetime of your chamber. In addition to standard warranties, we also offer extended warranties for cooling components, parts and labor. We also provide qualifications, validations and preventive maintenance services at an additional cost. Please ask for a quote.

Quiet Operation

The KB chambers utilize quiet and highly efficient DC fans. Locating these chambers in laboratory workspaces is a viable option.

Options Available

  • Extended Temperature Range
  • Chart Recorders
  • Data Loggers
  • Bench-Top Chamber Capable of Being Stacked
  • Dryers

Additional information

Cabinet Construction

Stainless model has stainless steel front door, and sides on exterior. Interior is stainless steel side walls, back, floor, ceiling, and door liner. This unit includes LED interior lighting.

Standard model features stainless steel door, stainless steel front, and brushed aluminum sides. Interior has anodized aluminum side walls, door liner, and back with stainless steel floor and ceiling.


Positive seal, self-closing doors (gravity cam-lift) with 120 degree stay open feature. Door gasket removal and installation is tool-less. Glass door models feature double pane,”Low-E” glass.


Entire cabinet structure and doors insulated using foamed-in-place CFC free polyurethane foam. 2″ or greater insulation thickness throughout.


Wire shelves (3 per door) available in stanless steel, chrome plate, or PVC coated. Shelves capable of supporting up to 100 lbs of evenly distributed weight. Gray PVC coated shelves are standard.

Full height shelf support pilasters, with double oblong holes on 1/2″ centers. Pilasters made of the same material as cabinet interior. Four (4) chrome plated, stainless steel shelf clips to be included for each shelf.

Refrigeration System

Unsurpassed temperature control through continuous refrigeration bypass system.

Refrigeration system factory balanced using CFC free 134A refrigerant.

Top mounted condensing unit.

Factory pre-engineered capillary tube system with oversized condenser and evaporator to reduce product pull down time and to consistently maintain interior cabinet temperature (non-adjustable capillary tube system superior to problematic expansion valve).

Evaporator – epoxy coated at the time of manufacture to eliminate the potential of corrosion.

Humidity Control

NIST traceable 0.8% Rotronic humidity sensor w/cert. • Solid state controlled, ultrasonic humidifier with ceramic/titanium disk for long life.

Electrical Characteristics

Unit completely pre-wired at factory, and ready for final connection to a 115/60/1 phase – 15 amp dedicated (recommended) outlet. Unit runs approx. 7RLA under test conditions.

A cord and plug set is included.

A sole use circuit is recommended.