122770 06 18-09-2007 13
RTD, RTD off, Ref1, Ref1 off and Cold junc.
RTD off has to be between 8.300.000 and 8.500.000.
RTD will have a value, which is depending on the temperature in the
well. The value will vary between 10.000.000 and 16.000.000. If the
value is 16.777.215 and Ref1 at the same time is below 9.000.000,
there is probably an error with the Pt100 sensor in the block.
Ref 1 must have a value between 15.000.000 and 16.700.000. If the
value is 16.777.215 or is below 15.000.000, there is an error in the
circuit.
Cold junc. will have a value, which is depending on the temperature
in the instrument. The value may vary between 10.500.000 and
12.000.000. If the value is 16.777.215, and Ref1 at the same time is
below 9.000.000, there is probably an error with the Pt100 sensor,
placed in the thermocouple connector on the front panel.
Diff. TC has to be between 8.300.000 and 8.500.000, when the
calibrator is stable.
)
Press in the Service Input Menu and the Reference
sensor AD-converter Menu will appear.
Shown here are the A/D-converted values for the measurements on
the external reference. The shown values are typical values.
RTD, RTD off, R2, R2 off, R3 and R3 off.
RTD off, R2 off, R3 and R3 off have to be between 8.300.000 and
8.500.000.
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