DKS PD96, User Manual

Page: 35 / 57

User manual for meter with U/I input PD96
35
Figure 7.1. Example of definition of permissible range of input signal
–
“Lo r” and “Hi r” parameters (“4-20” mode)
The
“Lo r”
parameter is important if input is set to
“4-20”
,
“1-5”
or
“2-10”
mode
only, and determines lower border of the permissible range. If input is set to
“0- 20”
,
“0-5”
or
“0-10”
mode then lower border of the permissible range is always 0. For
example if input is set to
“4-20”
mode, then lower border is calculated due to
expression: Imin = 4 mA - 4 mA ×
“Lo r”
%.
The
“Lo r”
value can be set from 0 to 99.9%.
Parameter
“Hi r”
determines the upper border of the permissible range accordingly
to the expression (for all modes).
For example if input is set to
“4-20”
mode, then upper border is calculated due to
expression: Imax = 20 mA + 20 mA ×
“Hi r”
%.
The value of
“Hi r”
can be set from 0 to 19.9%
In example no 1 of the display values calculation paragraph the
procedure of the permissible input range determining is presented in details.
If the measurement value do not exceeds permissible measurement range
but
displayed value exceeds range -999 ÷ 9999, the warning
”-Ov-”
is displayed
rather
than the calculated result.