Operating Instructions

Controlling Laboratory Air Flow
Siemens Building Technologies, Inc. Glossary-3
FFM
Fume Hood Flow Module. Collects information about flow rates or electrical signals that can
be converted to flow rates for a maximum of four fume hood flows. '
FHC
Fume Hood Controller.
FLN
Floor Level Network.
field panel
Device containing a microprocessor for centralized control of system components and
equipment controllers. A field panel samples and processes field data, initiates control
actions, communicates with its operators, and generates reports, displays and warnings.
intercept
Factor which converts analog values (used by the controller) to a form which the user can
understand (engineering units). Slope and intercept constants are determined by the type of
field input/output represented by the physical or virtual point.
LCM
Laboratory Controller Module.
LRC
Laboratory Room Controller.
loopout
The output of the control loop expressed as a percentage.
LPS
Liters Per Second.