An Analog Input (AI) object is the software representation of a hardware device that is monitoring an analog (continuously variable) value. The primary function of an AI object is to convert the raw hardware signal (analog-to-digital counts) from an analog input device to data that can be used in operator displays, alarm limit analysis, and control processes.
Typical applications for an AI object include temperature, humidity, pressure, and flow sensors. An AI might be used to measure the discharge air temperature of an air handling unit, or to measure the amount of chilled water (flow) from a chiller.
This document explains the relationship between various AI attributes from an applications perspective. In addition, you'll find an alphabetized listing of all AI attributes and commands (with descriptions and acceptable entries) at the end of this document.
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Since 2012, B2E Surplus LLC (aka Back To Earth Surplus) buys and sells quality commercial and industrial supply. This includes automation, building controls, electrical, HVAC, plumbing, and industrial materials. We are dedicated to running an environmentally and socially conscious company. We are known as a "surplus", "overstock", or liquidator. We stock a wide variety of products, including current-catalog and legacy/obsolete products. We also tend to stock a lot of special-order and hard-to-find products.
We are located in Tempe Arizona (USA) and can handle both domestic and international orders.
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