Fluidwell F090-A-PL, Руководство пользователя

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FW-F090-A-PL-M_v0403_07_EN.docx
Page 12
1 - DISPLAY (CONTINUED)
OFFSET
14 The unit need to know the value at minimum signal.
The following range can be programmed:
-99,999 to + 199,999
The
minus for a negative value can selected by pressing the centre and
right button simultaneously.
SPAN
15 With the span, the sensor signal is converted to a certain value.
The
span is determined on the basis of the selected measurement and
time unit at 20mA.
The more accurate the span, the more accurate the functioning of the
system will be. The following range can be programmed:
0.00001 to + 199,999
Example 1 Calculating the span for a level measurement
application:
Let us assume that the sensor generates 20mA at a level
of 2,481.3 Liters, the selected unit is "Liters" and one
decimal.
The span is 2481.3
Enter:
SETUP 11: “L”
SETUP 12: “1111.1”
SETUP 13: "2481.3
SETUP 14 "0.00".
Example 2 Calculating the span for a level measurement
Application with an offset:
Let us assume that the sensor generates 4mA at a level
of 200.00 USGAL and 20mA at a level of 652.31 USGAL,
the selected unit is “USG” and two decimals.
The span is 652.31-200=452.31.
Enter:
SETUP 11: “USG”
SETUP 12: “222.22”
SETUP 13: "452.31
SETUP 14 "200.00".
DIRECTION
16 If the display is required to increase in value as the input current
increases, select the scale direction
“normal”.
Alternatively, select “reverse” if the display is required to decrease as the
input current rises.
CURRENT
17
Do select “ON” if you want the actual current value to be displayed for the
operator.
PERCENTAGE
18 Do
select “ON” if you want to display the 0% value (value at minimum
sensor signal) and 100% (value at maximum sensor signal).
BARGRAPH
19 The bargraph (piegraph) displayed at operator level is percentage-wise
related to the input signal: minimum signal is 0% (setup 33) and maximum
signal is 100% (setup 34).
With this function, the bargraph can be enabled / disabled.
Following selections are available:
OFF - ON