Operating Instructions

Fume Hood Monitor Owner's Manual
Glossary-2 Siemens Building Technologies, Inc.
DO
Digital Output. A physical point that generates a two-state signal (such as, ON/OFF,
OPEN/CLOSED, or YES/NO).
EEPROM
Electronic Erasable Programmable Read Only Memory. Non-volatile memory.
English units
The foot-pound-second system of units for weights and measurements.
face velocity
Average air velocity through the face of the fume hood.
firmware
Category of memory chips that hold their content without electrical power. Firmware becomes
“hard software” when it holds program code.
FLN
Floor Level Network
fpm
Feet Per Minute. A measure of linear air speed.
Fume Hood Controller
Multi-application equipment controller designed to provide Direct Digital Control) for various
types of Variable Air Volume (VAV) fume hoods. The controller consists of a controller board
and a controller enclosure.
intercept
Factor that converts analog values (used by the FHM) to a form that the user can understand
(engineering units). Slope and intercept constants are determined by the type and range of
field input/output represented by the physical or virtual point.
LCD
Liquid Crystal Display.