Siemens SITRANS FUH1010PVDX, Operating Instructions Manual, Page: 91 / 308

4-1
CQO:1010PVXFM-3
Section 4
4. FUH1010PVX APPLICATION NOTES
The FUH1010 is an extremely versatile transit-time flowmeter that operates with either non-intrusive
clamp-on or in-line (non-wetted) flow transducers. Please review the following application guidelines to
obtain the best service from this equipment.
The FUH1010 provides a simple menu-driven interface for site programming. During the installation
procedure, you tell the system what you need it to do. It will then verify the pipe and liquid conditions, and
based on your selections, optimize its operation automatically. However, the system cannot protect itself
from critical data entry errors that you input. Its performance depends on the accuracy of the information
that you provide it.
For normal operation, the flow computer only needs a receive signal of sufficient amplitude to activate its
automatic gain controlled detection circuits. Severely adverse application conditions may reduce system
performance, or cause apparent operational failures. Finding the culprit that caused this can usually also
reveal an appropriate remedy. Should this still present a problem, call us for technical assistance.
4.1 TO OBTAIN TECHNICAL ASSISTANCE
The meter’s computer provides comprehensive diagnostics data. Using this data, our engineers can
analyze the system in relation to the application. Proper analysis will provide solutions to virtually any
application problem. For technical assistance, please contact your local Siemens representative for
expert help (www.siemens.com).
4.2 CONSIDERATIONS FOR CRITICAL APPLICATIONS
All flowmeters depend on site flow conditions and proper installation to achieve precise, critical flow
measurements. Unfavorable factors such as liquid non-homogeneity or stratification and aeration/cavi-
tation increase the possibility of reduced accuracy. This applies to all flowmeters, regardless of their
design, sophistication, expense and published intrinsic accuracy. These factors become critical when
applications involve custody transfer, tenant billing, and nuclear or other safety-related flows.
FUH1010 flowmeters automatically compensates for adverse flow conditions to achieve extremely high
accuracy. This requires following the instructions for proper equipment selection, use of the correct clamp-
on transducer or flow tube configuration, and paying close attention to installation instructions. Such
judicious use implies expert equipment knowledge and experience, plus a thorough understanding of
flow conditions.
If your application requires critical measurement accuracy, it is not realistic to simply install the flowmeter
and expect optimum performance. Carefully review your piping configuration, select the best mounting
location and install the transducers or flow tube in strict accordance with the published instructions. Even
when the system is calibrated for enhanced precision at a flow laboratory, this does not relieve you of the
responsibility of adhering to the programming instructions and installation requirements. We recom-
mend that all potential installers for critical applications participate in our training programs. Another
alternative is to commission our trained professionals to start-up the system for you.