Siemens BACNET 125-5037 - Manual (Page 43)

Siemens Building Technologies, Inc. 33
Glossary
Overview
The glossary contains terms and acronyms that are used in this manual. For
definitions of point database descriptors, see Chapter 3, Point Database, in this
manual.
AI
Analog Input. A point receiving a signal that represents a condition that has more
than two states. For example, flow rate sensors (water or air), temperature sensors
(room or duct), pressure sensors (static or velocity), and humidity sensors (room,
duct, or outdoor).
airflow
Rate at which a volume of air moves through a duct. Usually expressed in cubic feet
per minute (cfm) or liters per second (lps).
algorithm
Mathematical formula that uses varying inputs to calculate an output value.
AVS
Air Velocity Sensor.
AZM
Autozero Module. Equipment controller device used to calibrate the Variable Air
Volume Controller’s internal air velocity transducer without changing the volume of
air being delivered to a space.
centralized control
Type of control offered by a controller that is connected by means of Field Level
Network (FLN).
cfm
Cubic Feet per Minute.