The Hazardous Environment Detection Company
Alarms: NEG
TOX1
VOC
TOX2
0
NEG
0
LEL
0
20.9
OXY
•
“NEG” display along with a 1 beat/second
audible/visual alarm indicates indicates
that VOC sensor has drifted negative
(below zero) because the sensor was
zeroed in an area containing VOCs.
•
Perform “Fresh Air Calibration” in an
area clear of all VOCs.