Proline Promass 83
Commissioning
Hauser
59
6.3.2
"Pulsating Flow" Quick Setup menu
Certain types of pump such as reciprocating, peristaltic and cam-type pumps, for example,
create a flow characterized by severe periodic fluctuations. Negative flows can occur with
pumps of these types on account of the closing volume of the valves or valve leaks.
a0001213
Fig. 35:
Flow characteristics of various types of pump
A
With severely pulsating flow
B
With low pulsating flow
1
1-cylinder cam pump
2
2-cylinder cam pump
3
Magnetic pump
4
Peristaltic pump, flexible connecting hose
5
Multi-cylinder reciprocating pump
!
Note!
Before carrying out the Quick Setup "Pulsating Flow" the Quick Setup "Commissioning.
Severely pulsating flow
Once several device functions have been configured in the "Pulsating flow" Quick Setup menu,
flow fluctuations of this nature can be compensated over the entire flow range and pulsating
fluid flows measured correctly. You will find detailed instructions on how to use this Quick
Setup menu below.
!
Note!
It is always advisable to work through the "Pulsating flow" Quick Setup menu if there is any
uncertainty about the exact flow characteristic.
Slightly pulsating flow
If flow fluctuations are no more than minor, as is the case, for example with gear-type,
three-cylinder or multi-cylinder pumps, it is
not
absolutely necessary to work through the
Quick Setup menu.
In cases of this nature, however, it is advisable to adapt the functions listed below (see the
"Description of Device Functions" manual) to suit local process conditions in order to ensure
a stable, unvarying output signal. This applies in particular to the current output:
• Measuring system damping: FLOW DAMPING function
→
increase value
• Current output damping: TIME CONSTANT function
→
increase the value
Q
Q
Q
Q
Q
t
t
t
t
t
1
3
2
5
4
A
B
Summary of Contents for HART Proline Promass 83
Page 2: ...Proline Promass 83 2 Endress Hauser...
Page 147: ...Proline Promass 83 Endress Hauser 147...
Page 148: ...www addresses endress com...
