User Manual

ImpactXtreme Operator’s Manual 8 March 2013
Glossary of Terms
Common Terms
AC Alternating current
Auto zero See Zero calibration
Bump test A procedure that confirms the detector’s ability to respond to target
gases by exposing the detector to gas concentrations that exceed its
alarm setpoints. BW recommends bump testing the sensors before
each use.
Calibration A two-step procedure that determines the measurement scale for the
detector’s response to gas. In the first step, a baseline reading is taken
in a clean, uncontaminated environment (see Zero Calibration). In the
second step, the sensors are exposed to known concentrations of gas.
The detector uses the baseline and known gas concentrations to
determine the measurement scale. BW recommends to calibrate the
detector before first-time use and then on a regular schedule,
depending on use and sensor exposure to poisons and contaminants.
BW Technologies by Honeywell recommends to calibrate sensors
regularly and at least once every 180 days (6 months).
CD Computer-readable compact disc
FleetManager II FleetManager II is proprietary software developed by BW
Technologies to configure and manage docking modules; detector
calibrations and bump testing; and datalogs. FleetManager II is
available from www.gasmonitors.com
IEEE The Institute of Electrical and Electronics Engineers' (IEEE)
IR Infrared
LCD Liquid crystal display screen
LED Light-emitting diode
LEL Lower explosive limit.
Normal atmosphere Fresh air environment with 20.9% O
2
that is free of hazardous gas
OL Over limit.
OL alarm When gas levels in an area exceed the measuring range of the sensors,
the detector displays OL for the sensor which has exceeded its
measuring range.
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STEL Short-term exposure limit. STEL is an accumulated exposure limit to
toxic gases averaged over a defined time period that ranges from 5 to
15 minutes.