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Calibration Rooms / Walk-Ins


Parameter Generation & Control, in partnership with EdgeTech, provides custom rooms and large volume calibration chambers that combine the quality and durability of the Parameter line with the proven technology of the EdgeTech hygrometer. These rooms are utilized for large volume calibrations requiring humidity and temperature control within very narrow tolerances.

When specific conditions are required, accuracy, constancy and uniformity of an atmosphere must be considered. EdgeTech provides an accurate humidity and temperature measurement, while Parameter maintains a precise control constancy and chamber uniformity.

Parameter’s walk-ins are customized to your specifications and can be arranged with various shelving configurations. Cable ports, windows, and HEPA filtration are also available.

Custom Design

Parameter designs and manufactures rooms in our North Carolina facility to operate at the specific requirements and exact sizes you’ve specified. To ensure product integrity, Parameter assembles and thoroughly tests all systems prior to shipment and provides complete installation and on-site start-up instruction anywhere in the world.

Parameter is fully capable of upgrading any brand of existing rooms. Due to the flexibility of the Parameter conditioning systems we can also condition your existing rooms.

Rooms are built using modular insulated panels with either a 32 R-value (4″) or a 40 R-value (5″) to maximize efficiencies and uniformity. We can provide options for stainless steel construction, dryers, and air and water filters if needed.


Parameter room and chambers use a unique method of controlling moisture to attain unmatched levels of humidity and temperature control and uniformity. Unlike many other manufacturers, Parameter’s humidity methodology does not use vapor generators or atomizers as a humidity source. Instead, our dew point generating system achieves superior levels of humidity performance.

See an explanation of the Parameter system at Humidity Control 101.

The Parameter Smart Pad controller is a user-friendly system that provides control for the conditioning units. The Smart Pad is equipped with direct readings in both temperature and humidity, and features 60-segment programming for automatic cycling and also ramping and soaking excursions. High-low or deviation alarms are standard as well as a serial communications port. Take a closer look at the Smart Pad.

Contact Us for a Quote

Over our 30+ year history, Parameter has designed, built, and installed a variety of walk-in environmental and stability rooms, making us the ideal source to plan and design your room.

Contact Clay Hile or your local representative for more information about Parameter’s custom rooms and conditioning systems.

We offer a complete package:

  • Custom manufactured rooms or chambers to operate at your specific requirement at the size you need. Systems can automatically cycle conditions for running profiles.
  • Complete on-site installation anywhere in the world.
  • On-site start-up instruction.
  • PC-based monitoring systems come standard with each unit. System monitors temperature, relative humidity, saturation, and mechanical outputs.
  • Calibration and PM contracts.

RH Variables Parameter Competition
Total ± 2.5% ± 6.0%
Control Constancy ± 0.5% ± 2.0%
Chamber Uniformity ± 1.0% ± 2.0%
Sensor Accuracy ± 1.0% ± 2.0%