Yokogawa EJA115 Manual de usuario descargar pdf (Pagina 17)

IM 01C22T01-01E

2-10

2. HART COMMUNICATOR OPERATION

(7) Bi-directional Flow Measurement

(a) Bi-dir mode enables selection of 50% output at an

input of 0 mmH

F0218.EPS

(ENTER)

EJA:

Bi-dir mode

OFF

off

HELP SEND ESC ENTER

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 disappears.

(SEND)

1. Device setup

4. Detailed setup

2. Signal condition

8. Bi-dir mode

SEND

Note: The measurement range changes to –3000 to 0 to

3000mmH

O (output 0% to 50% to 100%).

Note that LRV and URV are not changed.

Example: If measurement range is 0 to 3000mmH

(LRV = 0 mmH

O, URV = 3000 mmH

(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

F0219.EPS

20 mA (100% display)

Low Cut

4 mA (–100% display)

Output mode “SQUARE ROOT”

LRV HRV

(8) Change Output Limits

The range of normal ouput is preset at factory from

5.0 to 110.0% unless otherwise specified or condi-

tioned, and the output is limited with these upper and

lower values. This output range can be changed, for

example, to meet the requirements of NAMUR, within

the settable range. Set the lower limit with AO lower

limit % and upper limit with AO Upper Limit %.

Settable range : 5.0 to 110.0 (%),

Upper limit > Lower limit

(9) Integral Indicator Display Mode

F0220.EPS

(ENTER)

EJA:

Display fnctn

Linear

Square Root

HELP SEND ESC ENTER

Select Square Root and press

ENTER (F4).

Press SEND (F2) to send data.

(SEND)

1. Device setup

4. Detailed setup

4. Display condition

2. Display fnctn

Example: Change from Linear to Sq root

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 30 31

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Yokogawa EJA115 Manual de usuario Pagina 17

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