Yokogawa EJA115 - Manual (Page 21)

IM 01C22T01-01E 2-14
2. HART COMMUNICATOR OPERATION
F02282.EPS
EJA:
Press OK when
pressure is stable
HELP DEL ABORT OK
3
Press OK (F4).
EJA:
Enter applied
pressure value
0.00 mmH2O
0.00
HELP ABORT
4
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
2
O (corresponding to
100% of the measurement range). Then, proceed the
same as for the operations for
Lower Sensor trim .
1
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
2
Apply a standard pressure of 300
mmH
2
O to the transmitter. After
obtaining a stable pressure, press
OK (F4).
EJA:
Press OK when
pressure is stable
HELP DEL ABORT OK
3
Press OK (F4).
EJA:
Enter applied
Pressure value
0.00 mmH2O
0.00
HELP ABORT
4
Enter 3000, and press ENTER (F4).
Remove pressure appears for a
while.
Fine input adjustment (100%) is
complete. DEL ENTER
(OK)
(OK)
(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%.
1
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
2
Press OK (F4).
EJA:
Connect reference
meter
HELP DEL ABORT OK
3
Connect the ammeter (
±
1
µ
A is
measurable), and press OK (F4).
EJA:
Setting fld dev
output to 4mA
HELP ABORT
4
Press OK (F4), and the transmitter
outputs the output signal of 0%.
DEL OK
(OK)
(OK)
(OK)
EJA:
Enter meter value
4.000
HELP ESC
5
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 (
±
1
µ
A is
measurable)
1. Device setup
2 Diag/Service
3. Calibration
2. Trim analog output
Ammeter reading: 4.115