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h) Capaciteitsmeting
Controleer of alle te meten schakeldelen, schakelingen en componenten evenals
andere meetobjecten absoluut spanningloos en ontladen zijn.
Let bij elektrolyt-condensatoren absoluut op de polariteit.
- Schakel de DMM in en kies het meetbereik
.
- Steek het rode meetsnoer in de V-meetbus (7), het zwarte
in de COM-aansluiting (8).
- In het display verschijnt de eenheid „nF“.
Door de gevoelige meetingang kan bij „open“
meetsnoeren een waarde in het display worden
weergegeven. Door indrukken van de toets “REL”
wordt het display gereset op “0”. Op het bovenste,
kleine display wordt de basiswaarde (Rel-verschil)
weergegeven. De autorange-functie wordt gedeac-
tiveerd.
- Verbind nu de beide meetpunten (rood = pluspool/zwart
= minpool) met het meetobject (condensator). Op het dis-
play wordt na korte tijd de capaciteit weergegeven.
Wacht tot de displaywaarde gestabiliseerd is. Bij conden-
satoren >40 µF kan dit enkele seconden duren.
- Zodra “OL” (voor Overload = overbelasting) op het display
verschijnt, hebt u het meetbereik overschreden.
- Verwijder na het meten de meetsnoeren van het meetobject en schakel de DMM uit.
109


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