Thermal Shock Test Chambers

Pictured is Tenney model TS2.02.04BV, a two zone, hot/cold thermal shock chamber. Designed primarily to meet the requirements of MIL-STD 883, Method 1010 and MIL-STD 202, Method 107, temperature cycling and thermal shock respectively, these chambers test the resistance of electronic components and assemblies to sudden and severe temperature changes. In addition to the popularly-sized 2 cubic foot and 8 cubic foot units, Tenney offers the T-Shock Junior, a bench-top thermal shock chamber with a ¼ cubic foot carriage capacity. Designed to accommodate pilot runs and the smaller production quantities of sophisticated discrete components, the T-Shock Junior is an efficient, cost-effective alternative to larger capacity units.

Thermal shock chambers are offered in three configurations:

• Two-Zone Operation
  
• Three-Zone Operation
  
• Dual Load Operation

Two-Zone Operation
The product is transferred, by means of a product basket transport system between hot and cold chambers.

Three-Zone Operation
In this arrangement, the cold chamber is stationary and the carriage moves in and out of the cold chamber. The hot chamber moves back and forth over the carriage, which when not covered by the hot chamber or residing in the cold chamber, dwells in ambient air. The ambient exposure can be programmed out, resulting in two-zone hot-cold operation. The chamber conditioning systems operate continuously, allowing continual production testing and maximum throughput.

Dual Load Operation
The product is transferred horizontally between hot and cold chambers in a two-basket transfer carriage. Three chambers are used, one hot chamber at each end, and a cold chamber in the center. This configuration allows uninterupted operation of the cold zone, doubling product load handling capability for high production applications while increasing operation efficiency and decreasing operation costs.

Tenney Environmental, 4 Quality Street, Williamsport, PA 17701. Tel: 570-326-1770; Fax: 570-326-7304.