CEMP-E
TI 810-11
30 November 1998
GLOSSARY
Section 1
Terms, Abbreviations and Acronyms
=:
Equal to
<:
Less Than
>:
Greater Than
A:
Ampere
AAD:
Auxiliary Actuator Driver
AC:
Alternating Current
Accuracy:
The degree of conformity of an indicated
value to a recognized accepted standard
value.
Actuator:
A device that, either electrically or
pneumatically operated, changes the position
of a valve or damper.
AD:
Control Damper
AFMA:
Air-Flow Measurement Station
AHU:
Air-Handling Unit
AI:
Analog Input
Analog:
A signal type representing a system variable
(such as temperature, humidity, or pressure)
that can be measured continuously over a
scale.
AO:
Analog Output
AUTO:
Automatic
Automatic Temperature Control:
A local loop network of pneumatic or
electric/electronic devices that are
interconnected to control temperature.
AUX:
Auxiliary
Auxiliary Actuator Driver:
An actuator circuit that can be used to control
a separate actuator.
Glossary-1
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