A manufacturer of consumer products will use a Tenney brand environmental walk-in chamber for during product research and development.

Manufactured by Thermal Product Solutions, White Deer, Pa., the Tenney test chamber has maximum temperature rating of 176°F (80°C). The relative humidity range is 20 to 95 percent within much of the unit’s operating range.

The chamber air temperature is capable of transitioning from minimum to maximum temperatures at 2.7°F (1.5°C) per minute on average, according to the manufacturer. Vertical air circulation is provided by electric heaters isolated from the working interior to prevent direct radiation.