Mindray P8-2TU - Bite-Hole Inspection Test

TransducerControlsandInspection
Operator's Manual 21
3.3.2 Bite-hole Inspection Test
Bite-holesorotherdamagesoftheendoscopesurfacecanalternativelybedetected
byasimplifiedtestwithouttheaccesstotheultrasoundsystem,byusingthefollowing
procedure.Theobjectiveofthistestistodetectbite-holes.Itissafeandeasytoperform,
butisnotanisolationorleakagecurrenttestasdescribedinEN60601-1.Thetest
equipmentisshowningurebelow.
Figure 3-3 Connection with test equipment (for reference only)
OK
1 Waterbath
2 Copperoraluminumsheet
3 Multimeter
4 TEEtransducer
5 Positivelead
6 Negativelead
Test Setup
Assemblethefollowingitemsforthetest.
• Waterbathwitha1Normalsalinesolution(50gNaCl/1literwater).
• Copperoraluminumsheetwithanareaofatleast25cm
2
.
• Digitalmultimeterwith40MΩscale(calibratedtoNIST).
Bite-hole Test
1. SubmersetheTEEtransducerwiththeendoscopeshaftinliquidtoabovethe40cm
mark(butbelowthehandle).
2. Connecttheleadsofthemultimeter,seeFigure 3-3.
Themultimetercanbeconnectedtotransducerandcopperoraluminumsheetusing
alligatorclips.