Click on “Download PDF” for the PDF version or on the title for the HTML version.

If you are not an ASABE member or if your employer has not arranged for access to the full-text, Click here for options.

The accuracy and reliability of a shop-built aspirated psychrometer were compared with those of a saturated-salt dewpoint hygrometer, a variable-capacitance electronic hygrometer, and a mechanical hygrothermograph. The devices were monitored over eight weeks in a dairy barn and seven weeks in a broiler barn. Only the electronic hygrometer failed to provide relative humidity measurements that were within 5% relative humidity of readings made with a reference psychrometer. Dust accumulations did not affect the accuracy of the sensors as much as was expected.