Title: Calibration of hygrometers for the direct measurement of relative humidity : Guideline DKD-R 5-8
Authors: Physikalisch-Technische Bundesanstalt, Braunschweig, Physikalisch-Technische Bundesanstalt (PTB), ISNI: 0000 0001 2186 1887
Contributors: HostingInstitution: Physikalisch-Technische Bundesanstalt (PTB), ISNI: 0000 0001 2186 1887
Resource Type: Text / Technical Requirement
Publisher: Physikalisch-Technische Bundesanstalt (PTB)
Rights: https://creativecommons.org/licenses/by-nc-nd/3.0/de/
CC by-nc-nd 3.0
Relationships: IsVariantFormOf: DOI 10.7795/550.20190214
Dates: Available: 2019-10-23
Created: 2019-10
File: Download File (application/pdf) 955.35 kB (978279 Bytes)
MD5 Checksum: 4d094aebc93ae411b9f58e67ccd283b1
SHA256 Checksum: 49e10021ab394af0a9f7ff06b241156cef359426c1fbddece449bae5a4e59d79
Keywords: Guideline DKD-R 5-8 ; hygrometer ; relative humidity ; direct measurement of relative humidity
Abstract: The purpose of this guideline is to define minimum requirements for the reference standard, calibration equipment, calibration procedure and the estimation of the measurement uncertainty in the calibration of hygrometers. It applies to calibration devices with direct measurement of relative humidity by means of resistive, capacitive, resistive-electrolytic as well as mechanical sensor elements. In this guideline, the term gas humidity refers to gaseous substance systems consisting of the components water and carrier gas. The guideline applies to the carrier gases air and nitrogen. For other carrier gases, the application of the guideline still is to be assessed.
If the calibration of the gas temperature is desired in addition to the humidity calibration, the guidelines DKD-R 5-1 or DKD-R 5-3 apply to the temperature calibrations. The selection of the guideline depends on the sensor element.
Citation: Guideline DKD-R 5-8, Edition 02/2019, Revision 0, Calibration of hygrometers for direct measurements of relative humidity, Physikalisch-Technische Bundesanstalt, Braunschweig and Berlin. DOI: https://doi.org/10.7795/550.20190214EN