Honeywell Midas User Manual page 103

Midas Gas Detector
®
12 REFLEX
®
Midas uses patented Honeywell Analytics technology
®
to continuously monitor the health check status of
specific electrochemical cells and alert the user if a
cell enters a variety of fault conditions (such as open
or short circuit etc.) which would leave the cell unable
to detect gas and raise an appropriate alarm signal.
REFLEX overcomes this unseen failure mode by
®
applying periodically a special electronic pulse
to the cell and reviewing the 'echo' from the cell
as it responds to the applied signal. If the cell is
deteriorating within certain pre-set limits based on
the received signals then Midas will decrease the
®
REFLEX sampling interval in order to establish the
®
actual viability of the cell. Within a relatively short time,
Midas will be able to alert the user via fault codes
®
that the electrochemical cell is likely to be requiring
replacement and is possibly unable to correctly detect
gas.
REFLEX is not required for pellistors or oxygen
®
electrochemical cells as these sensor cartridges
provide alternative electronic means to indicate open
circuits and other sensor cartridge damage issues.
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