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NORMALAB NDI 450 - 8 Troubles shooting; General troubleshooting; Result and measurement issues

NORMALAB NDI 450
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NORMALAB France
2012
N O R M A L A B F r a n c e
93/118
8 Troubles shooting
Degraded
function
Description
Solution or check to perform
General
The circuit breaker does
not remain engaged.
Verify that the mains voltage is in
concordance with that displayed on the
instrument.
The circuit breaker is
tripped when a test is
started.
Check that the transformer of the flask
heating circuit.
Switchover the switch on the two internal
power supplies and verify whether the
problem persists.
The fuse of the heating
block heating element
has blown.
Verify that the heating element circuit is not
damaged.
Problems on
results
The results are
divergent in
temperature
Verify that the sample temperature probe is
correctly displayed and calibrated.
Verify that calibration of the test tube and its
declaration.
Verify that calibration of the barometric
sensor.
Verify that the final volume.
Verify that leak tightness of the stopper
connection between the flask and condenser
tube.
Initial boiling point is
divergent
Verify that temperature conditioning of the
sample on starting the test.
Verify that the position of the probe in the
flask neck (see standard).
The test does not
Problem of adjustment
Verify that the power leads for the internal

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