US Patent No. 9,689,819

ELECTRONIC PSYCHROMETER AND/OR HUMIDISTAT WITH LOW TEMPERATURE AND HIGH HUMIDITY CAPABILITY


Patent No. 9,689,819
Issue Date June 27, 2017
Title Electronic Psychrometer And/or Humidistat With Low Temperature And High Humidity Capability
Inventorship Christopher W Callahan, Cambridge, NY (US)
Assignee The University of Vermont and State Agricultural College, Burlington, VT (...

Claim of US Patent No. 9,689,819

1. An electronic psychrometer comprising:
a dry temperature sensor;
a wet temperature sensor;
a fan-less evaporator cage surrounding the at least one wet temperature sensor, wherein the evaporator cage comprises pick
dimension P, wherein pick dimension P is the number of carrier crossings per longitudinal inch of the evaporator cage;

a programmable controller;
a computer readable medium, operatively coupled to the programmable controller, wherein the computer readable medium contains:
a set of programmable controller instructions that, if executed by the programmable controller, are operable to determine
relative humidity (RH) with an accuracy of substantially +/?1% RH.