Bi-Directional Flow Measurement; Integral Indicator Display Mode; Integral Indicator Scale - YOKOGAWA Dpharp vigilantplant EJA Series User Manual

(7) Bi-directional Flow Measurement

(a) Bi-dir mode enables selection of 50% output at an
input of 0 mmH O.
2
Example: If measurement range is 0 to 3000mmH
(LRV = 0 mmH
2
1. Device setup
4. Detailed setup
2. Signal condition
8. Bi-dir mode
EJA:
Bi-dir mode
OFF
off
on
HELP SEND ESC ENTER
(ENTER)
(SEND)
Call up the Bi-dir mode Display
Select on, and press ENTER (F4).
Press SEND (F2) to send the data
to the transmitter, then check to
confirm that
Note: The measurement range changes to –3000 to 0 to
3000mmH O (output 0% to 50% to 100%).
2
Note that LRV and URV are not changed.
(b) Combining Bi-dir mode with Xfer fnctn provides
a square root output computed independently for
0% to 50% output and for 50% to 100% output.
20 mA (100% display)
Output mode "LINEAR"
20 mA (100% display)
Low Cut
Output mode "SQUARE ROOT"
O
2
O, URV = 3000 mmH O)
2
disappears.
SEND
LRV HRV
4 mA (–100% display)
LRV HRV
4 mA (–100% display)
F0219.EPS

(8) Integral Indicator Display Mode

Example: Change from Linear to Sq root
1. Device setup
4. Detailed setup
4. Display condition
2. Display fnctn
EJA:
Display fnctn
Linear
Linear
Square Root
HELP SEND

(9) Integral Indicator Scale

Display
Mode
NORMAL %
F0218.EPS
USER SET
USER & %
INP PRES
PRES & %
* The number of lines displayed on the LCD is determined by the
number of LRV and URV lines set on the brain terminal.
See (a) through (c) for each setting procedure.
2-10
2. HART COMMUNICATOR OPERATION
ESC ENTER
(ENTER)
(SEND)
Select Square Root and press
ENTER (F4).
Press SEND (F2) to send data.
Related
Display
Parameters
% rnge 45.6%
Engr disp range
20.0M
% rnge
45.6%
Engr disp range
20.0M
Pres 456 kPa
% rnge 45.6%
Pres 456 kPa
F0220.EPS
Description
Indicates –5 to
110% range
depending on the
set range (LRV,
URV).
Displays values
depending on
engr disp LRV
and engr disp
URV Units set
using engr disp
unit are not
indicated.
Indicates user set
and % alternately
in 3 second
intervals.
Indicates input
pressure.
Indicates input
pressure and %
alternately in 3
second intervals.
T0204.EPS
IM 01C22T01-01E