Calibration history of some Rotronic MP-100 and Vaisala Humicap relative humidity sensors
Calibration history of some Rotronic MP-100 and Vaisala Humicap relative humidity sensors
Date
1994-09
Authors
Payne, Richard E.
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DOI
10.1575/1912/596
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Rotronic
Vaisala
RH sensor calibration stability
Vaisala
RH sensor calibration stability
Abstract
An analysis has been made of the calibrations done during 1990 through 1994 on Rotronic MP- 100 relative humidity sensors
(used in the Improved METeorological (IMET) system and sensors built at the Woods Hole Oceanographic Institution (WHOI)
with the Vaisala Humicap sensing element (used in the Vector Averaging Wind Recorder (VAWR)). The shift from one calibration
to the next is, typically, 2-3% RH which represents the major uncertainty in relative humidity with either of these sensors. The
direction of each shift appears to be random; thus, there does not appear to be any long-term drifts.
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Payne, R. E. (1994). Calibration history of some Rotronic MP-100 and Vaisala Humicap relative humidity sensors. Woods Hole Oceanographic Institution. https://doi.org/10.1575/1912/596