Wet bulb and Dry bulb Digital Humidity Meters or Hygrometers are accompanied with a chart for evaluating % RH. This chart is in PDF format below.
Table of Relative Humidity or RH 370 Kb PDF
The Sensors that could be used are Two RTD PT-100 and Two 48*96 Digital Indicators. The Wet bulb had a Moist Wick Compartment where water has to be refilled periodically.
Here are some Traditional Hygrometers. Even today these are used and work very well. Humidity and Temperature control is also important for HVAC - Heating, ventilation and air conditioning (HVAC).
When Weaving Textiles, Humidifiers or Atomizers are used to maintain the Humidity of the Work Area where the Looms are running. A Horse Hair Hygrometer is used to Manually Monitor and Regulate the Humidity. In Offices where the Air Conditioning needs a Humidity regulation the method used to Determine Humidity is by using a Wet and Dry Bulb Hygrometer or a Sling Psychrometer. Human and Animal Health is also sensitive to these parameters.
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