About Us

PGC is dedicated manufacturing the highest quality climate controlled systems for scientists and engineers. PGC's primary focus is precise humidity control.

Parameter Generation & Control (PGC) was founded in 1977 to provide equipment for research, testing, or quality/process applications requiring environmental simulation and control within extremely narrow tolerances. PGC is committed to continuing development of quality environmental simulation and control products.

Achieving and maintaining very precise relative humidity (RH) -AND- temperature control distinguishes PGC from its competition.

PGC produces three categories of environmentally controlled equipment.

1) Reach-in Chambers provide dependable performance wherever there is a requirement for very stable temperature and humidity. The RH and temperature are controlled to within +0.5% RH and +0.1°C respectively.

2) Conditioning Systems are manufactured and configured for operation with modular walk-in rooms, existing building spaces, or manufacturing processes.

3) Walk-in Rooms are modular-paneled rooms used in combination with PGC’s conditioning systems. Relative humidity constancies of +0.5% and temperature constancies of +0.1°C can be obtained in rooms as large as 30,000 cubic feet.

All our products are planned, designed, and manufactured by PGC, resulting in a complete RH/temperature solution.

Performance Comparisons

PGC’s primary focus is precise humidity control.

The equipment manufactured by PGC provides environmental simulation and control within very narrow tolerances, especially with regard to relative humidity (RH). PGC’s equipment maintains a remarkable control constancy of +0.5% RH.

A frequent reaction to a control specification of +0.5 % RH is that this figure far exceeds some of the standard requirements such as +5.0% RH.

In actuality, control constancy is just one of three parameters that should be considered when attempting to determine actual chamber conditions; the other two factors being chamber uniformity and sensor accuracy.

Using this approach, the following table compares PGC’s specifications with those of a typical manufacturer of a competitive unit.

It is important to consider all three variables when maintaining a certain humidity or temperature specification.

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