Electronic Psychrometer and/or Humidistat with Low Temperature and High Humidity Capability

摘要

The present invention has to do with a method and system for a high precision electronic psychrometer operable at low temperatures and high humidity environments. The electronic psychrometer includes thermistors for measuring wet and dry bulb temperatures and a wicked cage surrounding one of the thermistors. The wicking action of the wicked cage is controlled by an evaporation controller in conjunction with the wick's physical parameters. The electronic psychrometer determines relative humidity and provides a readout display and/or a control signal.

主权项

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.