Endress+Hauser Prosonic S FMU90 - Linearisation; Special Functions; Datalog Functions

Prosonic S FMU90
4 Endress + Hauser
Linearisation Pre-programmed linearisation curves
Types of vessels
• horizontal, cylindrical tank
• spherical tank
• tank with pyramidal bottom
• tank with conical bottom
• tank with flat, inclined bottom
Flow curves for flumes and weirs
1)
• Khafagi-Venturi flume
• ISO-Venturi flume
•BST
2)
-Venturi flume
• Parshall flume
• Palmer-Bowlus flume
• Rectangular weir
• Rectangular constricted weir
•NFX
3)
rectangular weir
•NFX
3
rectangular constricted weir
• Trapezoidal weir
• V-notch weir
•BST
2
V-notch wier
•NFX
3
V-notch weir
The pre-programmed linearisation curves are calculated on-line.
Linearisation formula for flow measurements
1
Q = C (h
α
+ γh
β
)
"h" is the upstream level. The parameters α, β, γ and C can be freely programmed by the user.
Linearisation table
consisting of up to 32 linearisation points; to be entered manually or half-automatically.
Special functions • limit detection
• rake control
• alternating pump control or control according to pump rate (standard)
• option: additional pump control functions
4)
:
– Alternation accordint to runtime or starts
– pump feedback via the optional digital inputs; stand-by pump configurable
– pump function test after resting time
– storm function to prevent unnecessary pump running times
– flush control for regular pump shaft cleaning
– pump control according to tariff times via digital input
– output of operating hours alarm or pump alarm
– recording of pump data (operating hours, number of starts, last running time)
• totalising of the flow volume with (resettable) counters and (non-resettable) totalisers
1
• triggering of a sampler by time or quantity pulses
1
• low flow cut off
1
• backwater detection in flumes
1
• sludge detection in flumes
1
• trend detection
Datalog functions • Peak hold indicator of the min./max. levels or flows and the min./max. temperatures at the sensors
• Recording of the last 10 alarms
• Indication of the operating status
• Trend indication of the outputs on the on-site display
• Indication of the operating hours
1) for instrument versions with flow software (FMU90 - *2**********)
2) BST: British Standard
3) French standard NFX 10-311
4) for instruments with software for additional pump control (FMU90-*3********** or FMU90-*4**********)