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9.3.8
Return to the normal through manual input of the phase angle rotations
If the function of automatic adjustment of phase angle rotations is not applicable whereas the
density meter detector is temporarily made empty thus causing the number of phase angle rotations
to jump to a faulty number, the number of phase angle rotations fails to return to an appropriate
value even when the density meter detector is refilled with the matter to be measured, thus allowing
the measured density to remain in error. In this connection, it is necessary to reset the phase angle
rotation to an appropriate value through manual input. The setting method is described below.
(1) Switching to the setting mode (see Subsection 5.2.5)
First of all, press the [ESC] key of the converter several times (normally once although this
varies with the operation status) to return to the initial menu display. Next, use the [→] key to
move the LCD indicator cursor to the menu number "2" of "2 SETTING MENU" and then
press the [SET] key to display the warning message saying "Test output will be valid." Make
sure that there is no problem and then press [→] to get into the setting mode. And return to [2:
SETTING MENU]. Then, the output will be switched to the simulated output that is set
beforehand.
(2) Selecting the "ANGLE ROTATION" setting menu (see Subsection 5.2.5)
In the state that the menu list of menu numbers 5 to 8 is displayed, use the [→] key to move the
LCD indicator cursor to the menu number "8" of "8: ANGLE ROTATION" and then press the
[SET] key to select the menu of "8: ANGLE ROTATION".
(3) Verifying or changing the number of phase angle rotations (see Subsection 5.2.13)
Press the [DN] key once (or the [UP] key twice) to display "N: ROTATION". On this screen,
it is possible to verify the number of phase angle rotations. Here, press the [SET] key to switch
to the setup display of the number of phase angle rotations and enter an appropriate value
(note). At the initial digit, use the [UP] or [DN] key to select whether to attach the "-" symbol
or not. Use the [→] key to move to the digit, and use the [UP] or [DN] key to alter the
numeric value of the relevant digit. When entering input is completed, press the [SET] key to
confirm it. The screen will be returned to the immediately preceding one; make sure that the
value is correctly reset.
Note:
0. In the event that the density or the fluid temperature is high, this value may be 1.
In the event that the density or the fluid temperature is low, it may be -1. Set either
of 0, 1 and -1 and then verify that the measured density at this time has returned to
an appropriate value.
(4) Returning to the measuring mode
Press the [ESC] key twice to return to the initial menu screen and return to the measuring
mode from the setting mode to resume the normal measurement.
In many cases, an appropriate value for the number of phase angle rotations N is
81
6 F 8 A 0 5 2 1
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