An analog value is a physical quantity that can be represented by a continuous set of values. In building management systems, analog values are often used to represent variables such as temperature, humidity, and pressure.
Analog values are typically measured using sensors, and the resulting data can be used to control equipment or make decisions about how to operate a system. For example, if the temperature in a room is too high, the air conditioning system may be turned on to cool it down. Or, if the humidity in a room is too high, the ventilation system may be turned on to remove some of the moisture from the air.
In addition to being used for control purposes, analog values can also be monitored and displayed on screens or other devices. This information can be used by people to understand what is happening in a system and make changes as needed.
