Penlon Prima 460 - Oxygen Monitor (Fuel Cell Sensor); System Description; The Oxygen Sensor; Oxygen Monitor Menu

Prma 460 50 User Manual
Description
3.14 Oxygen Monitor (Fuel cell sensor)
The oxygen montor contnuously measures and ndcates the
concentraton of oxygen n the breathng system, and trggers
an alarm when the concentraton vares from the set levels
NOTE
If a Masmo Nomolne OR+ gas module wth paramagnetc O
montorng s ftted, the ntegral oxygen montor system (fuel
cell sensor type) s dsabled Refer to Appendx 7
3.14.1 System Description
The oxygen montor uses a fast-respondng, oxygen-specfc,
sensor (1) that acheves 90% of fnal value n less than 10
seconds
A cable connects the sensor to the socket (2) adacent to the
patent block on the sde of the machne
The system has user-adustable hgh-level and low-level
alarms wth vsual and audble ndcaton of alarm condtons
Bacteral Flter
Always use a breathng system bacteral flter n the expratory
lmb of the breathng crcut to protect the oxygen sensor
and breathng system components from contamnaton (see
secton 6314)
AUTION
Replacement/Dsposal - always follow the nstructons
suppled wth the flter, and always replace at the
recommended nterval
3.14.2 The Oxygen Sensor
The oxygen sensor (1) provdes quck response, lnear output
over the entre 0 - 100% oxygen range, and long servce lfe
The sensor s a self-powered galvanc fuel cell that generates
a current proportonal to oxygen concentraton
The cell has a hghly stable output over ts operatng lfe
Sgnfcant output loss s only shown at the very end of ts lfe
Typcal sensor drft rates are less than 1% per month when the
sensor s exposed to gas n typcal applcatons
Sensor lfe
Sensor lfe s approxmately 1500 000 O% hours at 20°
(mnmum one year n most normal applcatons)
Sensor lfetme s governed by the mass of lead avalable to
react wth the oxygen and ts rate of consumpton Hgh oxygen
partal pressure and hgh temperature wll ncrease the sensor
output current, thus shortenng the operaton lfe
At the pont where all lead has been consumed, the output wll
fall very quckly to zero over a perod of two to three weeks
3.14.3 Oxygen Monitor Menu
Select O MONITOR ‘on’
To access albraton and Alarm Set functons, the montor
must frst be set to ‘on’ n the sub menu (1)
Scroll to O MONITOR, rotate the wheel to ‘on’, press the
wheel to confrm
NOTE
1 The oxygen montor defaults to the prevous values for
hgh and low alarm settngs
2
1
1