Siemens SITRANS FUH1010PVDX, Operating Instructions Manual, Page: 132 / 308

5-30
CQO:1010PVXFM-3 Section 5
The meter is now ready to report flow. Press the MENU key to display flow.
In cases where the actual Vs differs noticeably from the estimated Vs, the flow computer may issue a re-
space command. This requires that you re-space the Number Index transducer at the new Number
Index, then press <ENT> again. Repeat the initial makeup process. You can override a re-space com-
mand by simply keying the [Down Arrow]. However, after the flowmeter begins operating, you must
confirm that the sonic velocity (Vs) of the liquid falls between the [Vs max] and [Vs min] items in [Diag-
nostic Data / Site Setup Data].
Therefore, only consider editing the measured Vs after you remove all the primary causes for an inaccu-
racy. Check your pipe dimensions and pipe material entries. Re-check the transducer spacing and part
numbers. Large Vs discrepancies are almost always due to erroneous pipe data or incorrect transducer
placement.
To accept the Measured Vs:
Press or moves the cursor to the [Empty Pipe Set] menu cell.
If you decide to edit the Measured Vs:
To activate numeric entry press
Use numeric keys or Magnetic Wand to type the new Vs value (in meters-per-second).
To store the corrected Vs press
The flow computer may recommend a new Number Index and prompt you to press .
Remount the transducer at the new Number Index.
To repeat the Initial Makeup process press
ENT
ENT
ENT
After the flow display computer completes its Initial Makeup command, the [Install Complete?] option list
changes to:
If you want to redo the Initial Makeup, move cursor to New Makeup, then press . This resets the
option list. You can now repeat the install routine described previously.
5.4.9 THE EMPTY PIPE SET MENU
CAUTION: Only access the [Empty Pipe Set] menu when using the Actual MTY command.
The flow computer performs the MTYmatic routine automatically during its Initial Make-up to establish
a standard setting for the Empty Pipe alarm. The [Empty Pipe Set] option list allows you to re-invoke
MTYmatic, use an Actual MTY routine (if application conditions allow you to empty and refill the pipe)
or use the Set Empty routine to set the empty pipe threshold by direct numeric entry.
How to Use the Actual MTY Command
If application conditions allow you to empty and refill the pipe, then you should perform the Actual Empty
procedure. This is the recommended way to define the empty pipe threshold.
ENT
Install Complete? Yes
New Makeup