4.5 Cu. Ft. Calibration Chamber


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The Parameter 4.5 Cu. Ft. Calibration Chamber features our unique humidity control system, which enables the user to attain unsurpassed levels of RH/temperature control and uniformity.

Applications for this unit include diverse industries, such as pharmaceutical development and manufacturing, electronic components, food, semiconductor, paper and pulp, and anywhere precise humidity control and temperature replications are required.

The interior chamber of the unit is constructed of a durable, corrosion resistant 304 stainless steel. Low watt-density heaters are used that also contribute to the unit’s longer life.

Depending on the application, the chamber airflow can be factory configured from the standard horizontal flow to a vertical flow. Other options include extended ranges, chart recorders, outer door window, and a clear inner door with optional iris opening.

All Parameter equipment is exhaustively tested at your specified conditions before being shipped to ensure trouble-free operation.

To download product specifications pdf, click here.



This Parameter 4.5 Cu. Ft. Calibration Chamber features our unique humidity control system, which provides unsurpassed levels of RH/temperature control and uniformity.

Features and benefits of the 4.5 Cu. Ft. Calibration Chamber, series 7041-3110, include:

RH control constancy of ±0.5%
Temperature control constancy of ±0.2°C
Various safety cut-offs
316 stainless interior chamber
User-friendly and unit-specific digital controller
Extremely stable and uniform environment
Superior constancy and uniformity
Secure and safe
Longevity of equipment; corrosion resistant
Ease of operation

RH Variables

RH VariablesParameterCompetition
Total± 2.5%± 6.0%
Control Constancy± 0.5%± 2.0%
Chamber Uniformity± 1.0%± 2.0%
Sensor Accuracy± 1.0%± 2.0%


Relative Humidity Range: 10 to 95% (limited by a 4°C dew point)

Relative Humidity Constancy: ±0.5%

Relative Humidity Uniformity: ±1.0% at 25°/60%

Temperature Range: 7 to 85°C

Temperature Constancy: ±0.2°C

Temperature Uniformity: ±0.2°C at 25°/60%


Domestic: 208/230V, 1-Phase, 60Hz, 11.6 FLA, 7.6 RLA

International: 230V, 1-Phase, 50Hz, 11.4 FLA, 7.2 RLA

Higher voltages are also available

Refrigeration Unit: Fractional HP utilizing non-ozone depleting gas

Weight & Dimensions


590 lbs.


725 lbs.


41”w x 29”d x 46”h (nominal)

75” high with optional base cabinet


18”w x 18”d x 24”h (nominal)

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