ASTM D4230 - 02(2012)

    Standard Test Method of Measuring Humidity with Cooled-Surface Condensation (Dew-Point) Hygrometer

    Active Standard ASTM D4230 | Developed by Subcommittee: D22.11

    Book of Standards Volume: 11.07


      Format Pages Price  
    PDF 6 $43.00   ADD TO CART
    Hardcopy (shipping and handling) 6 $43.00   ADD TO CART


    Significance and Use

    Humidity information is important for the understanding of atmospheric phenomena and industrial processes. Measurements of the dew-point and calculations of related vapor pressures are important to quantify the humidity information.

    1. Scope

    1.1 This test method covers the determination of the thermodynamic dew- or frost-point temperature of ambient air by the condensation of water vapor on a cooled surface. For brevity this is referred to in this method as the condensation temperature.

    1.2 This test method is applicable for the range of condensation temperatures from 60°C to 70°C.

    1.3 This test method includes a general description of the instrumentation and operational procedures, including site selection, to be used for obtaining the measurements and a description of the procedures to be used for calculating the results.

    1.4 This test method is applicable for the continuous measurement of ambient humidity in the natural atmosphere on a stationary platform.

    1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific precautionary statements, see Section 8.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D1356 Terminology Relating to Sampling and Analysis of Atmospheres

    D3631 Test Methods for Measuring Surface Atmospheric Pressure


    ICS Code

    ICS Number Code 07.060 (Geology. Meteorology. Hydrology)

    UNSPSC Code

    UNSPSC Code 41112300(Humidity and moisture measuring instruments)


    DOI: 10.1520/D4230-02R12

    ASTM International is a member of CrossRef.

    ASTM D4230

    Citing ASTM Standards
    Back to Top