N O R M A L A B F r a n c e
exempt from vibration (which can generate
surface waves on the liquid and interfere
with the follower).
Verify the calibration of the plate
thermocouple.
Verify the mechanical position of the plate
thermocouple.
Flow rate value not
correct.
Product file ill-adapted.
Poor choice of standard.
Heating block plate ill-adapted.
The follower rises
without any liquid in the
test tube
Check the for presence of mist on test tube.
Check the cleanliness of test tube and optical
sensor (emitter and receiver).
The follower does not
follow the liquid.
Verify the positioning of the follower cell in
relation to the test tube.
Detection of initial
point (IBP)
The instrument does
not detect the initial
point (IBP)
Verify alignment of the cell with the
perpendicular of the end of the condenser
tube.
Verify absence of mist or other particles
perpendicular to the optical detector.
Poor initial boiling point
value (IBP)
The condenser was not cleaned before the
test.
Condenser temperature ill-adapted for
sample (risk of fixing in the condenser).
No detection or
divergent value
Verify the sensitivity displayed.
Verify the dry point was requested in the
product file.
Verify the dry point actually exists (too much
residue).
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