the 4th generation of valmet microwave consistency measurement · 2019. 11. 1. · total...
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The 4th Generation of Valmet Microwave Consistency Measurement
Innovation leading the way to the future
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History of microwave consistency
3
Kajaani MCA (1st. gen.)
kajaaniMCAi (2nd. gen.)
©Valmet
Valmet MCA (3rd. gen.)
26 years of experience
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Innovations and features of Valmet MCA
1 November 2019 © Valmet | Author / Title4
Digital PlatformNew DSD (Direct Sweep Detection)
measurement principle makes the
4G Valmet MCA the highest
performance consistency sensor
Taking paper making
performance to the next
leveltotal consistency measurement
independent of grade changes and
fiber properties
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Innovations and features of Valmet MCA
1 November 2019 © Valmet | Author / Title5
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Innovations and features of Valmet MCAThe 4G Valmet MCA offers two different sensor types to measure total
consistency
1 November 2019 © Valmet | Author / Title6
Easy calibration
Measurement range
0...16 Cs%
Total consistency
measurement utilizing
microwave principle
Highest sensitivity
Highest repeatability
Higher conductivity
capabilities
Process temperature and
pressure measurement
allows compensation
capabilities
Flow throughSizes available from
50mm (2’’) until 300mm (12’’)
Twin bladeAvailable in SS and SMO
Pipe sizes > 200mm (8”)
A Bridge to your
processThe new operating terminal
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Innovations and features of Valmet MCATwin blade sensor
1 November 2019 © Valmet | Author / Title7
The new and unique
sensor type for all
applications with a pipe
larger than 200 mm
• Unscreened pulp
• High conductivity
applications in a pulp mill
• Low-cost and easy to install
• Sensor material‒ Wetted parts materials:
AISI316L or SMO, Ceramic
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Innovations and features of Valmet MCAFlow through model
The new generation of
flow through sensor
The sensor’s mechanical
dimensions are the same as
previous generation, making
them easily replaceable
Sensor material
– Wetted parts: AISI 316,
Ceramic
1 November 2019 © Valmet | Author / Title8
50/2”
80/3”
100/4”
150/6”
200/8”
250/10”
300/12”
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Innovations and features of Valmet MCAValmet Bridge
1 November 2019 © Valmet | Author / Title9
The new modular and
innovative user interface,
with new calibration
features, intelligent
diagnostics, offering an
improved user experience
• 7 inch touch screen
• Instant trending capabilities
• Easy diagnostics download
• Multi-point calibration possibility
• Remote access
• Industrial Internet ready
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Installations
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Installations recommendationsTwin Blade (TB) sensor
Installation only
Vertical / horizontal / flow uphill
pipe sections
Installation close to dilution →
short delay time for control
Measurement should always
located so that the main pulp
stream will be measured.
Installation just after the pump
→ only on throwing side of
pipe
1 November, 2019 © Valmet | Author / Title11
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Installations recommendationsFlow Through (FT) sensors
Installation only
Vertical / horizontal / flow uphill
pipe sections
Installation close to dilution →
short delay time for control
Measurement should always
located so that the main pulp
stream will be measured →
main pulp stream between the
antennas
1 November, 2019 © Valmet | Author / Title12
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Applications
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Target applicationsPaper machines, board machines and pulp mills
Applications where grade
independent total consistency
measurement offers the best
process control performance
Need for the highest accuracy
High and variating filler content
Grade changes (mix of different fiber
types)
Most accurate measurement for
chemical dosing needed (kg/ton)
Consistency measurement for special
applications: starch , nanocellulose
etc..
Typical applications
Pulp feeds to mixing chest
Refining feed consistency control
Coated broke
Broke dosing
Recovered pulp
Mixing chest
‒ Recipe/grade management
‒ Production rate calculation
Machine chest
‒ Basis weight feed forward control
1 November 2019 © Valmet | Author / Title14
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The most critical applications in a paper mill
1 November 2019 © Valmet | Author / Title15
Valmet MCAMC
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The most critical applications in a board mill
1 November 2019 © Valmet | Author / Title16
Valmet MCA
MC
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