Metrohm 873 Biodiesel Rancimat Manual - Manual (Page 172)

6.1 Problems ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
164 ￭￭￭￭￭￭￭￭ 873 Biodiesel Rancimat
Problem Cause Remedy
The curve progression is too
flat with the result that auto-
matic detection of the induc-
tion time is not possible. Do not use Endpoint(s) as a stop crite-
rion in the method, but instead a defined
Conductivity e.g. 200 µS/cm (see Chap-
ter 4.5.2.1, page 60). Evaluate the curves
afterwards manually using tangents (see
"Setting tangents manually", page 112).
The measurement
aborts without an end-
point being found. The measurement has been
stopped manually. Keep the measurement running until the
endpoint is automatically found.
A time or conductivity is
defined as a stop criterion in
the method, which was
reached before the endpoint. Deactivate time or conductivity as a stop
criterion in the method (see Chapter
4.5.2.1, page 60) or increase the corre-
sponding value for the time or conductiv-
ity.
Error
The heating is defective. Switch the instrument off and on again.
If the error occurs again, please contact
Metrohm Service.
The maximum temperature
(220 °C) has been exceeded by
10 °C. Switch the instrument off and on again.
If the error occurs again, please contact
Metrohm Service.
Error
Error during self test. Switch the instrument off and on again.
If the error occurs again, please contact
Metrohm Service.