Siemens SITRANS FUS1010 NEMA-4X/ IP 65 NFM-3J Interface Vs m/s meters-per-second, Aeration %

Section 2 1010NFM-3J

Interface Vs (m/s) meters-per-second

The [Interface Vs m/s] menu cell sets the Interface Vs setpoint. The relay changes state when the variable exceeds the user setpoint

Aeration %

The System 1010 surpasses all other transit-time systems in its ability to operate with substantial aeration (caused by entrained gases, mixing condition or cavitation). Some applications may require an alarm indication if aeration exceeds a particular level. The meter detects this aeration level and provides this data as an output. The aeration percentage triggers the alarm relay whenever it meets or exceeds the threshold you set in this menu cell. The aeration percentage (Vaer %) appears in the Liquid Data section of the Diagnostic Menu. The digital display screen also shows the current aeration percentage.

NOTE: Severely aerated conditions may induce meter fault. The 50% default usually allows enough leeway for continued operation. For intermittent faults, see memory interval in the Output Control menu.

To set the Aeration % Alarm:

To move the cursor to activate numeric entry press

Use the numeric keys to type the Aeration percentage setpoint.

To store data press ENT

Makeup Latch

A fault condition (caused by an empty pipe or a transient loss of power, etc.) could temporarily interrupt operation. After recovery from the fault, the meter executes an in-process makeup 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 measurement 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 subse- quent 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 ENT

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