YOKOGAWA DPharp EJXC40A, Руководство пользователя

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<6. Operation>
6-10
IM 01C25W05-01EN
6.6.8 Output Mode Configuration
Differential pressure Output Mode (“TRNS.FC”
shown on the integral indicator) can be selected
by turning the external adjustment screw. Please
refer to 6.6.5 Pressure Unit Configuration for how to
select and set the enumerated value.
value display
linear LINEAR
square root SQ.ROOT
signal characterizer
(spcl curve)
SC.TABL
6.6.9 Display Out 1 Configuration
Display Out1 can be selected by turning the
external adjustment screw. Please refer to 6.6.5
Pressure Unit Configuration for how to select and
set the enumerated value.
6.6.10 Re-range by applying actual
pressure (LRV/URV).
This feature allows the lower and upper range
values to be setup with the actual input applied.
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Follow the procedure below to change the LRV and
URV settings.
[Example]
Rerange LRV to 0 and URV to 3 MPa.
1) Connect the transmitter and apparatus as
shown in Figure 7.1 and warm it up for at least
five minutes.
2) Press the push-button. The integral indicator
then displays “LRV.SET.”
3) Apply a pressure of 0 kPa (atmospheric
pressure) to the transmitter. (Note 1)
4) Turn the external adjustment screw in the
desired direction. The integral indicator displays
the output signal in %. (Note 2)
5) Adjust the output signal to 0% (1 V DC) by
rotating the external adjustment screw. Press
the push button to save the value. Doing so
completes the LRV setting. (Note 3)
6) Press the push-button. The integral indicator
then displays “URV.SET.”
7) Apply a pressure of 3 MPa to the transmitter.
(Note 1)
8) Turn the external adjustment screw in the
desired direction. The integral indicator displays
the output signal in %. (Note 2)
9) Adjust the output signal to 100% (5 V DC)
by rotating the external adjustment screw.
Press the button to save the value.Doing so
completes the URV setting.
10) Press the push-button. The transmitter then
switches back to the normal operation mode
with the measurement range of 0 to 3 MPa.
Note 1: Wait until the pressure inside the pressure-detector
section has stabilized before proceeding to the next
step.
Note 2: If the pressure applied to the transmitter exceeds the
previous LRV (or URV), the integral indicator may
display error number “AL.30” (In this case, the output
signal percent and “AL.30” are displayed alternately
every two seconds). Although “AL.30” is displayed,
you may proceed to the next step. However, should
any other error number be displayed, take the
appropriate measure in reference to , “Errors and
Countermeasures” in each communication manual.
Note 3 : Changing the lower range value (LRV) also
automatically changes the upper range value (URV),
keeping the span constant. New URV=previous
URV+(new LRV–previous LRV)
6.6.11 Save or Cancel
At the end of each parameter setting, select “Save”
or “Cancel” by the external adjustment screw
and press the push button to save or cancel the
configuration.
Save? Saved
Save or Cancel
Cancel? Canceled
screw
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push
push
After
parameter
setting