User manual for Digital Indicator and cooperating software
”0-20 mA”,”4-20 mA”
- current inputs, displayed value is defined by “
Hi value
”,
“
Lo value
” and "
Dec. point
" parameters.
”Hi value”
”Lo value”
- these parameters define the values displayed for maximum (Hi), and
minimum (Lo) current in the selected measurement range (0-20 mA or 4-20
mA). The aforesaid parameters can be set in the range – 9999 ÷ 9999.
A negative number can be input by entering a
'–'
mark (using
[^]
,
[v]
keys
).
The value of the
“Lo value”
parameter can be higher than the value of
“Hi value”
parameter. In such a case, for an increasing value of input current the displayed
value decreases.
Fig. 7.13.
”Inputs settings”
menu
(part 2)
”Dec. point”
- position of the decimal point for results displayed in numerical form.
The following options are available:
” 0”
” 0.0”
” 0.00”
”0.000”
The position of the decimal point is selected with
[^]
,
[v]
keys.
”Filter”
- this option enables the level of the filtration of indications to be changed.
Permissible values: from 0 (no filtration) to 5 (filtration with maximum time constant
of approx. 2 seconds).
”Upper ext.”
”Lower ext.”
- parameter defining the allowable range of input currents
If the input current lies within the defined range then the appropriate
measurement result shall be displayed despite exceeding the nominal
measurement value 0-20 mA or 4-20 mA. If the input current exceeds the
range defined by
“Upper extension”, “Lower extension”,
a "-
Hi
-" or "-
Lo
-"
message (depending on the direction of exceeding the range) shall be
displayed instead of the measurement result in numeric form. The
“Upper
extension”
and
“Lower extension”
values are defined in mA with the
accuracy of 0.01 mA. The
“Lower extension”
value is defined in relation to
a 4 mA current, in the range of 0-3.99 mA (this parameter is significant only
in the "4-20 mA" mode). The
“Upper extension”
value is defined in relation
to a 20 mA current in the range of 0-1.99 mA.
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