Functions
8.3 Parameter
ULTRAMAT 23
Manual, 3/2016, A5E37100388-003
127
Parameters: Measuring ranges: Hysteresis
In the third and fourth lines of this dialog, you can set the value
at which the analyzer switches from one range to the other.
The valu
es are specified in % of the full-scale value of range 1
Parameters: Measuring ranges: Setting
(Page 126)).
The hysteresis is only active if the "Actual range
" parameter
has been set to the value "AR"
(autoranging) in the dialog
"(Parameters: Measuring ranges: Switch ranges
125)).
The two switchover points should be as far apart as possible,
and the switchover point from MR1 to MR2 must be greater
than that from MR2 to MR1.
The following conditions have been assumed in the display:
Your analyzer has two ranges:
– MR1 from 0 to 400 mg/m
3
– MR2 from 0 to 2000 mg/m
3
.
The hystereses are defined as:
– MR1->MR2 at 100%
– MR2->MR1 at 90%.
If your analyzer is working in the smaller range (MR1), it
switches over to the larger range (MR2) when a value
greater than 400 mg/m
3
SO
2
is measured
If your analyzer is working in the larger range (MR2), it
switches over to the smaller range (MR1) when a value less
than 360 mg/m
3
SO
2
is measured (=90% of 400 mg/m
3
).
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