Yokogawa EJA115 Bedienungsanleitung PDF herunterladen (Seite 21)

IM 01C22T01-01E

2-14

2. HART COMMUNICATOR OPERATION

F02282.EPS

EJA:

Press OK when

pressure is stable

HELP DEL ABORT OK

Press OK (F4).

EJA:

Enter applied

pressure value

0.00 mmH2O

0.00

HELP ABORT

Enter 1000, and press ENTER (F4).

Remove pressure appears for a

while.

Fine input adjustment (0%) is

complete.

DEL ENTER

(ENTER)

(OK)

‘1 0 0 0’

SPAN adjustment shall be carried out with Upper

Sensor trim. After selecting Upper Sensor trim,

apply a pressure of 3000 mmH

O (corresponding to

100% of the measurement range). Then, proceed the

same as for the operations for Lower Sensor trim.

F0229.EPS

Select the Upper Sensor trim item.

EJA:

Sensor trim

1 Zero Trim

2 Pres

3 Lower sensor trim

4 Upper sensor trim

5 Sensor trim points

HELP SET HOME OK

EJA:

Apply hi pressure

DEL SET ABORT OK

Apply a standard pressure of 300

mmH

O to the transmitter. After

obtaining a stable pressure, press

OK (F4).

EJA:

Press OK when

pressure is stable

HELP DEL ABORT OK

Press OK (F4).

EJA:

Enter applied

Pressure value

0.00 mmH2O

0.00

HELP ABORT

Enter 3000, and press ENTER (F4).

Remove pressure appears for a

while.

Fine input adjustment (100%) is

complete.

DEL ENTER

(OK)

‘3 0 0 0’

(15) Trim Analog Output

Fine output adjustment is carried out with D/A trim or

Scaled D/A trim.

• D/A Trim

D/A trim is to be carried out if the calibration

digital ammeter does not read 4.000 mA and 20.000

mA exactly with the output signal of 0% and 100%.

• Scaled D/A Trim

Scaled D/A trim is to be carried out if the output

is adjusted using a voltmeter or other types of

meters or using a meter whose the scale unit is 0 to

100%.

F0230.EPS

Select the D/A trim item.

EJA:

Trim analog output

1 D/A trim

2 Scaled D/A trim

HELP SET HOME OK

EJA:

WARN-LOOP should be

removed from

automatic control

DEL SET ABORT OK

Press OK (F4).

EJA:

Connect reference

meter

HELP DEL ABORT OK

Connect the ammeter (±1µA is

measurable), and press OK (F4).

EJA:

Setting fld dev

output to 4mA

HELP ABORT

Press OK (F4), and the transmitter

outputs the output signal of 0%.

DEL OK

(OK)

EJA:

Enter meter value

4.000

HELP ESC

Enter the read value 4.115 of the

ammeter, and press ENTER (F4).

(The output of the transmitter

changes.)

DEL ENTER

(ENTER)

‘4 . 1 1 5’

Example 1: For the adjustment using an ammeter (±1µA is

measurable)

1. Device setup

2 Diag/Service

3. Calibration

2. Trim analog output

Ammeter reading: 4.115

1 2 ... 16 17 18 19 20 21 22 23 24 25 26 ... 30 31

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