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Verwendung des Meßmodus (MEASURE)
23
Mit Widerstandstemperaturfühlern (RTD)
Der Kalibrator unterstützt die in der Tabelle 6 aufgeführten
Widerstandstemperaturfühler (RTD). Widerstands-
temperaturfühler unterscheiden sich im Widerstand, den
sie bei 0 °C bzw. 32 °F (dem sogenannten Eispunkt oder
R0) bieten. Der gebräuchlichste R0-Wert ist 100 . Der
Kalibrator akzeptiert Widerstandstemperaturfühler-
Meßeingänge als 2-, 3- oder 4-Leiterverbindungen, wobei
die 3-Leiterverbindung die gebräuchlichste ist. Eine
4-Leiterverbindung bietet die höchste und eine
2-Leiterverbindung die geringste Meßgenauigkeit.
Zum Messen von Temperatur mit einem Widerstands-
temperaturfühlereingang wie folgt vorgehen:
1. Wenn nötig,
M für MEASURE-Modus drücken.
2. R zur Aktivierung der RTD-Anzeige drücken.
Diese Taste nach Bedarf wiederholt drücken, um den
gewünschten Widerstandstemperaturfühlertyp
auszuwählen.
3. X oder W drücken, um eine 2-, 3- oder
4-Leiterverbindung auszuwählen.
4. Den Widerstandstemperaturfühler gemäß
Abbildung 11 an die Eingangsbuchsen des
Kalibrators anschließen.
5. Bei Bedarf kann die Temperatureinheit, °C oder °F,
durch Drücken von D gewechselt werden.
33


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