User Manual

ImpactXtreme Operator’s Manual 8 March 2013
STEL alarm When an accumulated value exceeds a STEL setpoint, the detector
enters into a STEL alarm. Because this alarm is based on exposure over
time, it remains active until sufficient time has passed without
additional exposure to lower the overall accumulated value.
TWA Time-weighted average. TWA is an accumulate exposure limit to toxic
gases averaged over a defined time period that ranges from 4 to 16
hours.
TWA alarm When an accumulated value exceeds a TWA setpoint, the detector
enters into a TWA alarm. Because this alarm is based on exposure over
time, it remain active until sufficient time has passed without
additional exposure to lower the overall accumulated value.
USB Universal serial bus
Wi-Fi A technology that allows an electronic device to exchange data
wirelessly (using radio waves) over a computer network.
Zero calibration A procedure that establishes stable baseline readings for all sensors by
adjusting the detector’s baseline concentration reading to match the
concentration of gas found in a clean, uncontaminated environment.
The baseline reading becomes the ‘zero’ on the measurement scale
that the detector uses to display changes in gas concentrations.
Warnings and Cautions
This manual uses the following signal words, as defined by ANSI Z535.4-1998:
Hazardous situation which, if not avoided, will result in death or
serious injury. This symbol identifies the most extreme hazardous
situations.
Hazardous situation which, if not avoided, could result in death or
serious injury.
Hazardous situation which, if not avoided, may result in moderate or
minor injury.
Situations which, if not avoided, may result in property damage.