KROHNE Summit 8800 Vol 2 - Manual (Page 38)

38 www.krohne.com 08/2013 - MA SUMMIT 8800 Vol2 R02 en
SUMMIT 8800 METERING PRINCIPLES 03
3 .10 .5 Proving procedure
Proving is a complex but well defined procedure to control valves, take measurements and do
calculations. As the quality of the result is depending very much on the tolerances, limits and
stability of flow, temperature, pressure and density they are very well checked and controlled
during the proving cycle as defined in many standards.
The following flow charts illustrate the necessary procedure to successfully prove and imple-
ment the result. As the procedure is quite extensive, it is necessary to be able to track exactly
what is happening. For that reason, a checklist is added with the parameters to check.
A01: Start
Prove
command
issued
A02: Send the begin
prove command to the
required run
A03: Is the correct
frequency being
received?
A04: Begin prove
valve control
A05: Valves
correctly
positioned ?
A06: Flow
stabilisation
A07: Stabilisation
completed succesfully
?
A08: Prove
sequence
A10: Proving
sequence
completed ok ?
A13: Generate prove
report
A11: User accepts
KF/MF ?
A12: Update KF/MF
A14: Should
valves be reset ?
A15: End prove
valve control
A17: Send setpoints to
regular flow
A18: Send the end
prove command to the
required run
A19: Prove End
Yes
Yes
Yes
No
No
No
No Yes Yes
Yes
A16: Valves
correctly
positioned?
No
Yes
No
A09: Multi-point
prove?
Yes
No
Figure 16 Proving flowchart