YOKOGAWA DpharpEJX vigilantplant EJX Series - 4. GETTING STARTED; Connection of Devices

IM 01C25T01-01E
3-11
3. OPERATION
3.5 Detailed Setup
3.5.1 Bi-directional Flow Measurement
(a) Bi-dir mode enables selection of 50% output at an
input of 0 mmH
2
O.
F0317.EPS
(ENTER)
EJX:YOKOGAWA
Bi-dir mode
Off
off
on
HELP SEND ESC ENTER
1. Device setup
4. Detailed setup
2. Signal condition
9. Bi-dir mode
Example: If measurement range is 0 to 3000mmH
2
O
(LRV = 0 mmH
2
O, URV = 3000 mmH
2
O)
Press SEND (F2) to send the data
to the transmitter, then check to
confirm that disappears.
Note: The measurement range changes to 3000 to 0 to
3000 mmH
2
O, corresponding the output of 0% to 50%
to 100%. Note that LRV and URV values are not
changed.
(SEND)
SEND
Call up the Bi-dir mode display
Select on, and press ENTER (F4).
EJX:YOKOGAWA
Signal condition
5 Pres Damp 0.50 sec
6 Low cut 20.00 %
7 Low cut mode Zero
8 H/L swap Reverse
9 Bi-dir mode On
HELP SEND HOME
1
2
(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)
4 mA (–100% display)
 Output mode “LINEAR”
LRV HRV
F0318.EPS
20 mA (100% display)
Low Cut
4 mA (–100% display)
 Output mode “SQUARE ROOT”
LRV HRV
3.5.2 Integral Indicator Display Mode
The mode setting for the output signal and the integral
indicator can be performed independently.
The output mode for the integral indicator is set as
specified in the order when the instrument is shipped.
Follow the procedure below to change the mode.
Example: Change from Linear to Sq root.
F0319.EPS
(ENTER)
EJX:YOKOGAWA
Disp Pres % fnctn
Linear
Linear
Sq root
HELP SEND ESC ENTER
1. Device setup
4. Detailed setup
4. Display condition
2. P disp condition
1. Disp Pres % fnctn
Press SEND (F2) to send the data
to the transmitter, then check to
confirm that disappears.
(SEND)
SEND
Call up the Disp Pres % fnctn
Display. Select Sq root, and press
ENTER (F4).
EJX:YOKOGAWA
P disp condition
1 Disp Pres % fnctn
2 Disp Pres % Reso
3 Pres disp point 2
HELP SEND HOME
1
2
If the instrument is equipped with an integral indicator
and the transfer function is sq root, “ ” is displayed
on the integral indicator.