YOKOGAWA EJA565E, Руководство пользователя

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IM-P-20200627-01
6. Explanation Programming Points
6.1 Zero Adjustment
(ZERO)
The transmitter is set to 0 mbar at atmospheric
pressure.
The
ZERO can be adjusted at a lower or higher
point. This will be explained step by step by an
example.
Example: Increase ZERO t
o 100 mBar.
1. The measuring unit of the transmitter is set to
mBar. If not this can be selected by choosing
the right measuring unit in program point P104
– UNITS (paragraph 6.4)
2. Navigate to program point P101 - ZERO
Value , and push the navigation button to enter
the menu.
3. Two choices appear on the screen: “ set
manual ” and “ use process ”
Set manual = Configuration without test
pressure.
Use process = Configuration with applied
pressure.
4. Choose “ set manual ”, +000.0 (mBar) will
appear on the display.
5. Increase this value with the navigation button
to 100 mBar, push to confirm, and select
SAVE SAVE
to save the setting.
6. The transmitter will return to the home screen.
The measurement value at atmospheric
pressure is now -100 mBar. At an applied
pressure of 100 mbar the transmitter will
display 0 mbar.
The menu zero adjustment also has the choice of
“ use process ”. The transmitter can be adjusted to
zero in a real process situation. When chosen, the
transmitter will measure the pressure in an actual
process. This measurement will be used as the zero
value. (4 mA)
1.
Navigate to program point P101 , and push the
button to enter the menu.
2. Choose “ use process ” , and push to confirm.
The transmitter will display the actual
measured value.
3. Push the navigation button to confirm, and
select
SAVE SAVE
to save the setting.
4. The transmitter will return to the main menu.
Zero value
P1O1
<6. Explanation Programming Points>
6.2 Span Adjustment
(SPAN, 20 mA)
This setting can be used to adjust the range (SPAN)
according to an entered value or adjusted with
or without an applied pressure. The maximum
pressure which can be measured (20 mA) is the
measurement at
ZERO (P101) + the entered value SPAN (P102) . If
the ZERO (P101) is increased then the maximum
measured value will automatically be set higher by
the same amount as the zero.
This will be explained step by step by an example.
Example:
Measurement range 0 – 2000 mbar = 4 - 20 mA.
The
span must be set at 2000 mbar
1. Navigate to program point P102 - SPAN
Value , and push the navigation button to enter
the menu.
2. Two choices appear on the screen:
Set manual
and
Use process
Choose Set manual , a value will appear on
the screen. (Depending on the range.)
3. Adjust the SPAN with the navigation button
to 2000 mbar. and select
SAVE SAVE
to save the
setting
4. The transmitter will return to the home screen.
The menu span adjustment also has the choice of
“
use process
”. The transmitter can be adjusted to
the span in a real process situation. When chosen,
the transmitter will measure the pressure in an actual
process. This measurement will be used as the span
value. (20 mA)
1.
Navigate to program point P102 , and push the
button to enter the menu.
2. Choose “ Use process ”, and push to confirm.
The transmitter will display the actual
measured value.
3. Push the navigation button to confirm, and
select
SAVE SAVE
to save the setting.
4. The transmitter will return to the main menu.
Span value
P1O2