Philips Expression MR400 - IV. Zeroing, Leveling and Calibration

ExpressionMR400InstructionsforUse MonitoringInvasiveBloodPressure8‐7
IV. Zeroing, Leveling and Calibration
A. Afterthesystemhasbeen primedandmounted,zerothetransducerusingoneofthe
followingmethods:
—Or—
Step Action
1Turnthezeroreferencestopcock“off”tothepatientandremove
yellownon‐ventedcapfromthesideportwhichopensthezero
referencestopcocktoair.
Note
The air-fluid interface of the zero reference stopcock should be at or
near the right atrial (mid-axillary) level.
2Zerothetransducer.PresstheZeroAllkey.(Other wise,tozeroa
singlechannel,useZeroSetintherespectiveP1orP2menu;see
page8‐24).
ZeroingAllPressureChannels(orZeroingPressureChannelfora
singlechannelifZeroSetwasused)willbedis playedandzeroing

willbegin;where,uponcompletion,Donewillbedisplayedto
indicatesuccess.
Note
If the transducer will not zero and an error condition occurs, verify
that the transducer is being used as described in the manufacturer’s
instructions. Press Retry to attempt zeroing again. If the transducer
still does not zero, try another transducer and/or cable; and, if
condition persists, contact technical support or authorized service
personnel.
3Turnthezeroreferencestopcock“off”tothesideportandreplace
yellownon‐ventedcap.
Step Action
1 Attachdesiredcathetertodistalendofmonitoringkitandprime,
purgingallairbubblesfromcatheter.
2Openstopcock(s)tothecatheter.(Thecathetertipisnowthe
systemair‐fluidinterface.)