17
Electromagnetic Flowmeter Converter
5.
Data Entry
5.1
General Description
5.1.1 Data Entry Information
5.1.2 Direct Numeric Entry
5.1.3 Entries from a Table
5.1.4 Terminating Data Entry
5.1.5 Data Security
5.1
General Description
The instantaneous flowrate is displayed in the first line in
percent or direct reading engineering units together with the
present flow direction indicator,
(
for forward or
for
reverse) .
In the second line the totalizer value for the present flow
direction is displayed with a max. of seven digits followed by the
units.
The totalizer value, in the appropriated units, always represents
the actual value regardless of the pulse factor setting.
This display combination is referred to in the text by the term
process information.
1st line
Forward direction instantaneous flowrate
2nd Line Forward direction totalizer value
The totalizer value for the other flow direction can be displayed
by pressing the Tot-key. After apporx. 20 seconds the display
automatically switches back to displaying the totalizer value for
the present flow direction. The display can be switched back
immediately by pressing the Tot-key again.
1st Line
Forward direction instantaneous flowrate
2nd Line Reverse direction totalizer value
(Press Tot-key, multiplex operation)
A totalizer overflow occurs whenever the totalizer value
reaches 9,999,999 units. When the totalizer value in one of the
flow directions is greater than 9,999,999 units, the flow direction
symbol (
→
F or
←
R) and the units (e.g. hl) blink in the 2nd line.
The totalizer value is reset to 0 and the internal overflow
counter incremented by 1.
1st Line
Forward direction instantaneous flowrate
2nd Line Totalizer overflow.
→
F and hl blink
A converter software counter can register a max. of 255
overflows.
A calculation for an overflow condition is shown in Section 5.2.
on Page 19.
The overflow indicators can be cleared independently for each
flow direction with ENTER.
When no overflow counter value is displayed the converter
resets the appropriate totalizer value.
If an error condition exists, an error message is displayed in the
first line.
The error message is displayed alternately in clear text and
then with its error code. Only the error with the highest priority
is displayed in clear text while the error codes for all detected
errors are displayed in the alternate display. See Error
Messages and Checks beginning on Page 35.
1st line:
Error with the highest priority at the present time;
(instrument is inoperative) The alarm output is
activated (opened). See Table Error Messages on
Page 35.
2nd line: Forward direction totalizer value
!
Note:
An illustration and description of the converter keypad
may be found on Page 53.
F
→
R
←
F 70.01 %
F10230.0 m3
F98.14 %
R516.000 m3
F78.97 %
23455.1
hl
→
F
U
REF
too large
F12.0000 m3
Summary of Contents for 50SM1000
Page 4: ......
