美卓定位器

• Updated when:
All the time when the device is powered
• Indicates about:
- Correct sizing of the valve • Notice: - Especially useful when optimising
plant operation or replacing old control valves
16
© Metso Date Author Title
Contactless and freely rotating shaft. No vibration effects, no wear, protected against humidity.´The A/D resolution is 4096 steps. Accurate pressure sensing is vital for the smooth control and effective valve condition monitoring
Indicates about:
2 6
© Metso
Valve offline tests --Multipoint step test
• Possibility to run 10 steps in
one test • Calculates accurate key figures from the test data
66
2011 30000
50
•
(MBL) (CBL)
(M&C)
•
(PAS) FC
© Metso
, , , , ,
© Metso
© Metso
ROTARYGLOBE
Top5
NELDISC
FINETROL RE
© Metso
Neles
Neles
Neles
Jamesbury Jamesbury 4000 Jamesbury 7000/
1450
ND Switchguard B
VPVL
Valvguard
AXIOM
Stonel
QP
© Metso
• • • • • • • • • • •
75% 70% 65% 40%
150,000 250,000 Neles 700,000 Neles 1,000,000 Neles 5,000,000 Jamesbury 40,000 2,000 MAPAG
• Full operating temperature
range -40 to +85 °C
© Metso
ND9000
• • • • •
© Metso
ND9000
Adobe Acrobat Document
-
) )
© Metso
Lifecycle diagnostics—
Dynamic state deviation
ND9000
Separate valve controller board and communication board
ND9000
• Double black lacquering
to protect components
• Impact and drop tested
- 1 meter fall to concrete
UNCLASSIFIED
Lifecycle diagnostics
Dynamic State Deviation example—
warning limit
Valve friction has increased!
2 1
© Metso
Spool valve position trend example-
- dead time - step response time (T86) - overshoot - gain
• Indicates
- control performance - Stability - operation speed
27
© Metso
www.metso.com
company/metso
• Indicates:
To analyze possible problems with supply pressure To monitor pressure values that exceed device specifications
2 3
© Metso
Lifecycle diagnostics-Valve position histogram trend—
• •
Updated when:
-
All the time when the device is powered Average operation point of the valve during past 24h Used to track down changes in plant operation
• Setpoint reversals--• Valve reversals--• Valve reversals while stable setpoint – • Valve position--• Counter—
2 5
© Metso
Counter Diagnostics
Daily valve position trend -
metsoworld
metsogroup
metsoworld
metsogroup
Double black lacquering to protect components. Temp range -40 to +85 °C
Positioner supply pressure range 1.4 to 8 bar (20 -115 psi). Wide capacity range - 5.5, 12 and 38 Nm3/h at 4 bar. (Spool 2,3 and 6)
I/O
RS 485 HART
Valve Manager
I/O
HART Mux
4..20 mA & HART
4..20 mA & HART
HART
DCSLeabharlann Baidu
© Metso
ND9000
ND9000
© Metso
15
ND9000
Prestage Unit Mech. and Digital Position Indicator
• Updated when:
- setpoint is changed or valve
position is moving
• Indicates about
- Can be used to estimate
valve dynamics such as response times
Notice
- Possible stiction - Process conditions - Small supply air capacity
Neles SwitchGuard
11
© Metso
U. Gensicke / smart products
ND9000
• • •
(I/P)
•
Profibus Hart DCS
© Metso
FF
ND9000
DCS
-> -> HART
DCS DCS
Valve Manager
I/O
4..20 mA
I/O
Actuator membrane has failed, leakage increasing!
2 2
© Metso
Lifecycle diagnostics --Supply pressure trend ----
• Updated when
All the time when the device is powered
Notice • Absolute value is not important only changes should be monitored • If process conditions are NOT changed and valve position is slowly increasing this means build up in the control valve • If process conditions are NOT changed and valve position is slowly decreasing this means erosion in closing element
Neles FieldCare
MAPAG
© Metso 9
“
”
10
© Metso
Smart Products Control valves Neles ND7000
Valves Safety valves ON/OFF valves Standard ON/OFF Neles ValvGuard
Spool Valve Assembly
Hart, Profibus PA and Foundation Fieldbus Communication Board
Connection for 4-20 mA output
Valve Controller Board
UNCL ASSIFI ED
© Metso
© Metso
MAPAG
400 300 200 100 -270
© Metso
Pressure bar
Size range: NPS 4 (DN 50) to NPS 100 (DN 2500) Materials: A to Z (Aluminium to Zirconium)
-40
600
Temperature °C
Local User Interface (LUI)
CONFIDENTIAL
Single flapper with light aluminium coil structure. Excellent vibration characteristics due to balanced masses.
resulting from e.g. small spool, small pipes or dirty supply air filter
20
© Metso
• • • •
Absolute value is not important only changes should be monitored In on-off application gives high values Changes in the operation of the valve influences the trend Supply pressure level, performance level, calibration and tuning of the device effects the trend
-
ND9000 Revision 2 also includes Daily valve position trend to indicate changes in valve condition or operation
2 4
© Metso
Counter Diagnostics—
Trend collection