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Recent Developments in the Measurement and Monitoring of Climatic Conditions

Recent Developments in the Measurement and Monitoring of Climatic Conditions
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The measurement of climatic conditions prior to applying a coating is vital to the success of the process, as it is well known that a surface at the dewpoint temperature will have a thin film of moisture over which the paint will be applied. 

Product Number: 41210-539-SG
Author: John Fletcher
Publication Date: 2010
Industry: Coatings
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$20.00
$20.00

The measurement of climatic conditions prior to applying a coating is vital to the success of the process, as it is well known that a surface at the dewpoint temperature will have a thin film of moisture over which the paint will be applied. If the surface temperature is within 5 °F (3 °C) of the dewpoint temperature, there is a probability of the presence of moisture due to the uncertainty of the measuring devices and the inertia of the surface during warming. It is therefore essential that the relative humidity (RH), the air temperature (Ta) and the surface temperature (Ts) are measured quickly and accurately so that the dewpoint temperature (Td) and the difference between the surface and dewpoint temperatures can be calculated for correct paint or not paint decisions to be made. This paper describes the latest design and operational features of a digital dewpoint meter and describes how this gauge is calibrated and used for both quality control of paint application processes and for monitoring cure conditions using data logging techniques.

The measurement of climatic conditions prior to applying a coating is vital to the success of the process, as it is well known that a surface at the dewpoint temperature will have a thin film of moisture over which the paint will be applied. If the surface temperature is within 5 °F (3 °C) of the dewpoint temperature, there is a probability of the presence of moisture due to the uncertainty of the measuring devices and the inertia of the surface during warming. It is therefore essential that the relative humidity (RH), the air temperature (Ta) and the surface temperature (Ts) are measured quickly and accurately so that the dewpoint temperature (Td) and the difference between the surface and dewpoint temperatures can be calculated for correct paint or not paint decisions to be made. This paper describes the latest design and operational features of a digital dewpoint meter and describes how this gauge is calibrated and used for both quality control of paint application processes and for monitoring cure conditions using data logging techniques.

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