Tokyo Keiki UFL-30, Installation & Operation Manual

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II-15
Confirmation of operational status
Operation of each function after data setting such as analog output, range fixing, and measurement
path fixing and whether or not measurement is functioning properly can be checked.
[Battery]
A letter ‘B’ blinks at the upper portion of the measurement screen when remaining battery power is
low.
Note1: When battery power is lost and power is shut off, totalized value cannot be retained.
Note2: When the battery is removed, the letter
‘B’ does not appear in the display.
[Measurement aberrations]
Check whether fault is due to no received signal or equipment failure.
• A letter ‘R’ is displayed in the upper right of the measurement screen when there is no received
signal.
• The number of ‘No Received Signal’ occurrences can be checked under “Status 2” of the
measurement screen.
Note: The number of no received signal occurrences is retained in memory even when the power is
turned off.
• In case of equipment failure, ‘ ERR** ’ is displayed in the upper part of the measurement screen.
The ‘ ** ’ suffix of the ‘ERR ‘ indication identifies the source of the equipment failure. For details
please see Table 4-1: Error Code Table under Chapter II-2-7, ‘Output Operation During
Measurement Aberrations’.
Note: The check display takes precedence during check operation. ( ‘ ERR** ‘ is not displayed
during the check operation.)
[Detection of disturbance]
Momentary distortions in measurement values caused by bubbles or solids in the liquid are
deleted.
• When disturbance of flow are detected, a ‘D’ appears at the upper right of the measurement
screen.
• The number of occurrences of disturbances detected can be checked under ‘Status 2’ of the
measurement screen.
Note: The number of occurrences of disturbances detected is retained in memory even when the
power is turned off.
[High and low limit alarms]
Flow measurement values which exceed the upper limit setting or are less than the lower limit
setting can be checked.
• When the upper and lower limits are exceeded, an ‘
O ’ (alphabet ‘ O ’) is displayed in the
upper right of the measurement screen.
• Upper and lower limits can be set for forward flow and reverse flow respectively.
• Upper and lower limits are expressed as a 7-digit alphanumeric display which
includes decimal point.
• The digit display and decimal point position is determined by the input expression of
the forward max. flow value which is set via the analog output setting screen. For example, for
forward max. flow value set at 500.00, the upper and lower limits can only be set to 2 decimal