Clearing Peaks - MSA ORION Manual

Four-Head Gas Detector: MSA Orion
3.3.6

Clearing peaks

Clear peak readings before beginning operations. Operators can then be confident
that peak values shown during operations represent their exposure. Don't clear
peaks unless the Orion shows you are in clean air.
To clear peaks, start with the instrument turned on, and in instant reading mode.
a) Press On/Off/Page.
b) The Peak flag shows, and the display gives the peak readings for O
and CO recorded since the unit was turned on, or since peaks were last cleared.
c) If necessary, record the values. Go forward a step and record the O
reading. Press On/Off/Page until you return to the Peak screen.
d) Press and hold Change/Reset until the Change flag shows and the Peak flag
flashes.
e) Press On/Off/Page to confirm. Peaks will be reset to zero, and the unit will
return to instant reading mode.
D.I. Rec-ommended Practice
FILE: W:\NB\RP HMRU\Orion\Frame Ver 02\Orion.fm
NOTE
Peak readings will include the challenge test and/or calibration you
have just completed. To have meaningful results during operations,
peaks must be cleared.
NOTE
Clearing peaks also clears the oxygen minimum reading. Clearing
the oxygen minimum also clears the peaks. Turning the Orion off
clears both the peaks and O
Peak readings are recorded in the datalog. Clearing peaks does not
effect the datalog. If you need to record peak and O
readings for operational needs, do so before clearing, or before
turning the unit off.
minimum.
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Version 02 Issued February 2011
© Copyright State of NSW (Fire and Rescue NSW) 2011
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