Siemens FIDAMAT 6 - Page 94

Functions
8.4 Measuring ranges
FIDAMAT 6
92 Operating Instructions, 01/2019, A5E00222135-04
Figure 8-20 Measuring range switchover type A
When the upper switchover point (OU) is exceeded, the next larger measuring range
available is selected. When the lower switchover point (UU) of the next smaller measuring
range available is fallen below, this measuring range is selected. The UU lies at 80 %
(HystA) of the measuring range. The OU lies at 90% (HystE) of the measuring range.
Type B:
The measuring range end value must be larger than or equal to the measuring range end
value following it. Since the measuring spans must also become larger, the measuring range
start values of the following measuring ranges are always smaller.
mba
Start of measuring range
mbe
End of measuring range
UU
Lower switchover point: Select smaller measuring range
OU
Upper switchover point: Select larger measuring range
Figure 8-21 Measuring range type B
The following applies to the measuring range switchover:
Figure 8-22 Measuring range switchover type B