<7. Operation>
7-11
IM 01C25B01-01E
7.6.11 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 8.1 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 zero-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 zero-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 zero-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 zero-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)
7.6.12 Device Information Display
Model name, communication protocol, device
revision and software revision are displayed
repeatedly.
7.6.13 Save or Cancel
At the end of each parameter setting, select “Save”
or “Cancel” by the zero-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
