Siemens SITRANS FUH1010PVX, Operating Instructions Manual, Page: 107 / 226

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1010BXFM-3
Section 2
to restore operating parameters. During the makeup, the meter sets a Makeup Alarm flag,
which clears upon completion. Therefore, unless you were monitoring the unit continuously,
you could miss the fact that an In-process Makeup occurred. The Makeup Alarm Latch alerts
you that the system implemented a Makeup by holding the Makeup Alarm active until you
reset it manually by the simultaneous keystrokes: <Fn>6 (where “n” represents the measure-
ment channel). In addition, if the Datalogger is active with Status Alarms selected, generating
a Datalogger report will reset the Makeup Alarm Latch. This ensures that the Alarm does not
appear on succeeding Datalogger reports. A Makeup Alarm appearing on a subsequent report
indicates that an In-Process Makeup must have occurred since the last Datalogger report.
To enable or disable the Makeup Latch:
To access the [Makeup Latch] option list press
Move the cursor to select either [On or Off] by pressing
To turn Makeup Latch [On] or [Off] press
2.6.3 INTERFACE ALARMS
The [Interface Alarms] menu cell is selected to monitor the sonic velocity (Vs). It is a constant
rate of change alarm function that monitors the LiquIdent setting. The alarms appear locally
on the LCD digital display.
ROC Alm Set m/s
Use the [Roc Alm Set m/s] menu item to set the desired numerical alarm relay setpoint in
meters per second. For example, if the alarm relay setpoint value is set to 50 m/s, when the Vs
varies by 50 m/s from the current LiquIdent setting for the assigned time interval (e.g., 10
seconds), the alarm relay will trip.
Interval Secs
Select the [Interval] menu item to set the time interval in seconds. This time interval value
affects how long the variation in [Rate Value m/s] will last before the alarm relay is tripped.
Relay Hold Time
The [Relay Hold Time] menu item allows the setting of the time in seconds that the alarm
relay will stay closed.
High LiquIdent
Use the [High LiquIdent] menu item to set the numerical high limit span of the LiquIdent
function.
Low LiquIdent
Use the [low LiquIdent] menu item to set the numerical low limit of the LiquIdent function.
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