User Manual

9
(7) Display Settings panel
Defines the indicator display at zero value and
full value input current, which is normally 4 and
20mA.
Note: Irrespective of the selected Display
Resolution, this panel always shows two digits
after the decimal point.
(8) Damping Time
A damping time between 0 and 30 seconds may
be typed into this box. A long damping time will
help to provide a steady display from a noisy
input current.
(9) Units of measurement
The Units of Measurement panel enables a five
digit upper case alphanumeric legend to be
entered which appears below the main indicator
display. This may be used to show the
instrument’s units of measurement or
application.
(10) Downloading calibration to indicator
Ensure that the connection panel shows that the
BR323 indicator is connected to the personal
computer, then click the download arrow on the
toolbar.
After downloading is complete the left hand side
of the Configuration Programme screen should
show the new calibration information and the
BR323 should have the required display. The
calibration information may be stored or printed
from the PC in the normal way.
6.5 Non-linear calibration
The BEKA configuration software enables non-
linear functions to be downloaded to a BR323
indicator. Any curve that continuously increases
or decreases with between 2 and 128 breakpoints
may be used.
6.6 Square root extraction
Probably the most common non-linear function is a
square root curve that enables a BR323 indicator
to display flow in linear engineering units. A
square root table is included with the BEKA
configuration software. To import the square root
table proceed as follows:
(1) Linearisation mode
Open the BEKA configuration programme and
set the Linearisation Mode to Custom which will
produce the screen shown in Fig 8.
(2) Import file
Click File on the toolbar followed by Import
Custom Curve. In the C\My BEKA Associates
Data\Custom Curves folder select SquareRoot
0-100PCT.csv Click the Open button and the
BEKA configuration software will import the
square root file. The table of 128 x and y values
will be displayed and the graph will show the
square root curve.
Fig 8 Non-linear BEKA Configuration Programme display screen