Mindray P8-2Ts - Temperature Calibration Test

TransducerControlsandInspection
Operator's Manual 23
3.4.2 Control Settings, Temperature
Thefollowingaregeneralguidelinesforreducingtemperaturein2DorDopplermodes.
• Ingeneral,imagingin2Dmoderesultsinthelowesttransducersurfacetemperature.
• Whenimagingin2Dmode,increasingtheimagedepthgenerallyreducesthe
transducersurfacetemperature.
• Whenimagingincolormode,therearenoimagingchangesthatreducethetransducer
surfacetemperature.
• WhenimaginginPWDopplermode,decreasingthePRFand/orpositioningthe
Dopplersamplegatetoashallowerdepthgenerallyreducesthetransducersurface
temperature.
• WhenimaginginCWDopplermode,increasingthedepthoftheCWDopplersample
line(2DimagedepthpriortoturningonDopplertracemode)generallyreducesthe
transducersurfacetemperature.
• Inanyimagingmode,freezingtheimagewilltemporarilyreducethetransducer
surfacetemperature.
3.4.3 Temperature Calibration Test
Thetemperaturemeasurementfunctionshouldbeverifiedtothespecificationsatleast
onceayear.
Test Setup
Assemblethefollowingitemsforthetest.
• Temperaturestabilizedwaterbath
• Temperaturegaugewithaccuracyof±0.1°C
Temperature Calibration Test
1. Adjustthewaterbathtemperatureto41°±0.1°Candmonitorthetemperaturewiththe
gauge.
Ifanaccurateandstablewaterbathisnotavailable,theaddedinaccuracymustbe
takenintoaccountwhenthetemperatureisreadfromtheultrasoundsystem.Deviation
ofmorethan±0.5°Cisnotacceptable.Maintainingthisaccuracywithouttemperature
regulationmaybedifcult.
2. ConnecttheTEEtransducertotheultrasoundsystem.
3. Press<Freeze>andsetpatienttemperaturetobe41°Conultrasoundsystem.
4. Putthetransducertipinthewaterbath.
Atleast10cmofthedistalendmustbesubmerged.
5. Observethetemperatureindicatedonthesystemmonitor.
6. Waituntilthetemperaturedisplayisstabilizedat41°±0.5°Cplus/minusanywaterbath
temperaturedeviation.
7. ObservethattheWarningpop-upwindowisdisplayed.
Ifbothsteps6and7arepassedthetemperatureshutdownworksasstated.Ifnot,
ContactMindrayoryourlocalrepresentative.