OPERATION and USE
Press the ON button to start the instrument in an area known to be gas free and with nor-
mal oxygen content. The following will display as a normal start up sequence:
1. Activate all segments and icons
2. Gas type to be sensed
3. Software version
4. Temperature in °C
5. Alarms will sound, illuminate and vibrate
6. "LO" Low alarm value displays
7. "HI" High alarm value displays
8. "tA" TWA alarm value displays (when applicable)
9. "StL" STEL alarm value displays (when applicable)
10. "Sn" Serial Number displays
11. Displays remaining life, in months
12. All segments will flash for 6 seconds indicating zeroing
13. Working display is shown
If the instrument is in an area that is not gas free, "BAD" will illuminate after the automatic
zeroing followed by a reading based on factory zero set points.
Attach the instrument to the outermost garment as close to your head/face as practical.
Follow federal, state, local and company regulations as it relates to the use of this prod-
uct.
Alarms will indicate unsafe levels. The display will show concentration data in combina-
tion with audible, visual and vibration indications. TWA alarms can be acknowledged for
10 minute intervals by pressing any button.
A manual zeroing should only be done in an atmosphere known to be gas free and con-
taining normal oxygen levels. Press the ZERO button for 2-3 seconds and release. All seg-
ments of the display will flash followed by the working display.
Exposure to gas in excess of sensors range specifications will result in "OL" being dis-
played with the high alarm activated
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