Operation
5.4 Operating functions
OXYMAT 64
Operating Instructions, 06/2008, A5E00880383-03
69
The following applies to measuring range switching:
0HDVXULQJUDQJH
0HDVXULQJUDQJH
RIVSDQIURPIXOOVFDOHYDOXH
Figure 5-29 Measuring range switching, type A
When the upper switchover point (OU) is exceeded, the next larger available measuring
range is selected. If the lower switchover point (UU) of the next smaller available measuring
range is fallen below, this 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 full-scale value must be greater than or equal to the full-scale value following it. Since
the spans must simultaneously become larger, the start-of-scale values of the following
measuring ranges become continuously smaller.
PEH
88
28
PED
mba Start of measuring range
mbe End of measuring range
UU
Lower switchover point: select the smaller
measuring range
OU
Upper switchover point: select the larger
measuring range
Figure 5-30 Measuring range type B
The following applies to measuring range switching:
0HDVXULQJUDQJH
0HDVXULQJUDQJH
RIVSDQIURPVWDUWRIVFDOHYDOXH
Figure 5-31 Measuring range switch, type B