sensors.md

Sensors:

Absolute Humidity absolute_humidity

Absolute humidity is a measure of the actual amount of water vapor (moisture) in the air.

Heat Index heat_index

The heat index combines air temperature and relative humidity to posit a human-perceived equivalent temperature.

Humidex + Perception humidex humidex_perception

The humidex (humidity index) describes how hot the weather feels to an average person as a result of the combined effect of heat and humidity. It is calculated from the dew point.

Dew Point + Perception dew_point dew_point_perception

The dew point is the temperature to which air must be cooled to become saturated with water vapor and dew forms on surfaces.

Frost Point frost_point

Frost point, temperature, below 0° C (32° F), at which moisture in the air will condense as a layer of frost on any exposed surface.

Frost Risk frost_risk

Risk of Frost based on current temperature, frost point and absolute humidity.

Relative Strain Perception relative_strain_perception

A measure of discomfort resulting from the combined effect of temperature and humidity. It assumes a person dressed in a light business suit, walking at a moderate pace in a very light air motion. It is applicable to assess heat stress of manual workers under shelter at various metabolic rates. Valid for temperatures between 26 and 35°C (79 to 95°F).

Summer Simmer Index + Perception summer_simmer_index summer_simmer_perception

Provides a proven indicator of heat stress concerns and discomfort using meaningful equivalent temperature values for general public acceptance and awareness.

Moist Air Enthalpy moist_air_enthalpy

The enthalpy of moist air is the sum of the enthalpy of the dry air and the enthalpy of the water vapour. Enthalpy is the total energy of a thermodynamic system.

Summer Scharlau Perception summer_scharlau_perception

The summer Scharlau index describes a bioclimatic thermal comfort when temperature values are higher than 0°C. Valid for temperatures 17° to 39°C (63° to 102°F) and humidity >= 30%.

Winter Scharlau Perception winter_scharlau_perception

Reflects the level of human discomfort caused by cooling. Valid for: temperatures -5 to +6°C (23 to 43°F) and humidity >= 40%.

Thoms discomfort Perception thoms_discomfort_perception

Indicates the level of discomfort as a result of high temperature and the combined effect with relative humidity.