8
Important notes for Pt100 measurements
With the Pt100 measuring method, very low currents flow into the
measuring electronics� Make sure to avoid additional resistance
(conductors, contact and transfer resistance, loose contacts, etc.) in the
measuring circuit�
4-wire measurement is always to be preferred over 2-wire measurement�
For 2-wire measurement, all contact resistances and connection
resistances add up by measurement and can falsify the measurement
result�
7 Parameter setting
Parameter bit
/ Designation
Description
Comments
P0
Filter
1
50 Hz filter active in the
A/D converter
The 50 Hz filter applies to the whole
of Europe
0
60 Hz filter active in the
A/D converter
P1, P2
Peripheral fault
parameter bit
peripheral fault can be triggered by
P1
P2
1
2
3
4
0
0
on
off
off
off
0
1
on
on
off
off
1
0
on
on
on
off
1
1
on
on
on
on
P3
Type of the Pt100
element
1 2-wire mode
0 4-wire mode