kajaaniROTARY™ Get a better view of consistency control
Contents
1. ROTARY kajaani Get a better view of consistency control metso automation The new kajaaniROTARY trans mitter expands Metso s offe ring in the category of shear force based consistency mea surement It is suitable especi ally for chemical pulp mills and bleaching applications at RCF or mechanical pulp mills It fea tures durability accuracy ope rability and self diagnostics the well known qualities of all Kajaani products kajaaniROTARY soon another industry standard Selecting a correct transmitter is a straightforward procedure when you base your decision on investment cost and measurement performance For example a microwave transmitter is the best choice if you are after high accuracy or total consistency measurement or if your fiber properties often vary due to pulp grade changes At chemical pulp mills however the use of microwave transmitters is sometimes limited due to the chemistry of the process Fiber consistency transmitters based on shear force technology have been widely used in pulp and paper applications for over fifty years Today they make up the majority of all consistency transmitters in operation Shear force technology is basically split into blade and rotating transmitters A blade transmitter is an economical choice for most applications and provi des performance similar to rotating transmitters However a blade transmitter s installation requirements c2. the process conditions have been clarified kajaaniROTA Metso Automation s portfolio cess temperature compensation The temperature affects both pulp viscosity and fiber stiffness which must be taken into account Accurate and compensated shear force measurement is now ready for further calculations Commissioning is quick Like all Metso Automation s blade trans mitters kajaaniROTARY is equipped with ready made calibration curves for diffe rent sensors and pulp grades These cur ves convert shear force measurement to consistency measurement Single or two point calibration can made for quick commissioning Versatile multi point calibration is available for special pulp grades and MC consistencies Self diagnostics of course Today self diagnostics is a must The instrument must be able to analyze its own performance continuously and report it to the control room or the asset management system kajaaniROTARY features a complete DTM description for the FieldCare system making all rele Delignification High conductivity rmance is clear kajaaniROTARY can be installed using a mounting chamber up to RY completes DN250 10 lines or process coupling lines DN300 12 or larger DIN ANSI JIS pipe standards are supported kajaaniROTARY trend Reference kajaaniROTARY Consistency Cs N l hy j aj f W 0 i igg 150 200 250 300 20 400 450 be HL time The performance of kajaaniROT
3. ARY vs the best selling shear force transmitter applied to a washer after the O stage at a chemical pulp mill vant measurement data such as consis kajaaniROTARY s maintenance diag tency temperature rotating speed and nostics provide service staff with access performance diagnostics available for to all raw measurement data and detai the users Since the alarm and warning led diagnostics limits are adjustable the transmitter can be customized to different applications ECF bleaching section rma ay kajaaniROTARY Specifications and process conditions Measuring range 1 5 18 Cs see table below for more specific data Repeatability 0 01 Cs Sensitivity 0 001 Cs Damping 1 605 Ambient temperature 20 70 C 4 158 F kajaaniROTARY sensors Sensors See table below for more specific data Enclosure class IP66 NEMA4X Housing Aluminum alloy Wetted materials AISI 316L 254 SMO or Hastelloy C276 Mechanical seal AISI 316L Hastelloy C276 Wetted gaskets EPDM Kalrez Operating unit TCU Enclosure class IP65 NEMA4 Operating voltage 90 260 VAC 0 1A Outputs current output Consistency 4 20 mA HART 18 35 VDC Inputs 2 inputs isolated 12 48 VDC Communication PC connection RS 232 Profibus PA 2005 Foundations Fieldbus 2006 Support for FieldCare 2005 Motor Enclosure class IP55 optional IP56 Motor voltage 220 690 VAC 45 65 Hz see technical specificat
4. an be challenging especially with large process lines For example requirements for straight pipe sections can limit its use kajaaniROTARY offers more flexi bility in this respect and also offers better sensitivity in medium and high consis tency applications than other rotary transmitters The operating unit TCU is an efficient tool for configuration calibration and maintenance diagnostics Precision as never before A robust design as well as excellent repeatability and sensitivity these are the requirements for a superior rotary transmitter Naturally such a transmitter must also endure high pressure and pro cess temperatures in harsh process con ditions The key to meeting all these requirements lies in a winning combina tion of precision mechanics robust design and modern electronics Accurate raw measurement signals form the basis for good instrument practice The basic performance is set and neces sary compensations must be made at the early stages In kajaaniROTARY the ambient temperature effect is compen sated ensuring excellent performance after a cold start up or rapid process changes Since the effect of rotating speed varia tion is also compensated possible power supply frequency variation or random peaks in consistency at the mill do not disturb measurement either All these factors contribute to accurate phase shift measurement Typical kajaaniROTARY applications at a chemical pulp mill in
5. clude washing screening and bleaching Accurate washing and screening control ensures maximum production capacity with high quality pulp The role of consisten cy control in bleaching is critical when you aim at optimal chemical dosing Consistency control also forms the ba sis for upper level bleaching controls kajaaniROTARY is available with different sensors and materials Its wide measurement dynamics ensure excellent performance from 1 5 to 18 Cs Wetted parts can be made of AISI 316L or 254 SMO Hastelloy C for bleaching applications Typical kajaaniROTARY applications Chemical pulping e Screening e Washing Bleaching Mechanical pulping and RCF e Bleaching The current controller is the heart of the transmitter running the phase shift me asurement to a fixed set point value The adaptive controller keeps the response time constant and fast Self diagnostics analyzes controller performance conti nuously and reports all disturbances to the operator Current measurement is converted to torque with a resolution that is thous ands of times more accurate than that of other rotating transmitters on the market This ensures much wider mea surement dynamics than ever before Torque measurement can be converted to shear force measurement after pro Knot screening Fine screening Accuracy Accurac Fiber consistency Transmitter selection is easy when the required control perfo and
6. ion for more details Process conditions Process temperature 0 120 C 32 248 F pH range ere Pressure rating PN10 PN25 150 363 Ibs Vibration Max 20 m s 10 2000 Hz Measurement penerengewe Cs for different pulp types ang and sensors te ew fs ss fs un 7 s TMP 254 SMO is a registered trademark of Outokumpu Stainless HART is a registered trademark of Hart Communication Foundation Metso Automation Field Systems Consistency Products Lentokentankatu 11 P O Box 237 FI 33101 Tampere Finland Tel 358 20 483 170 Fax 358 20 483 171 For further information please contact one of our regional offices or visit our web site www metsoautomation com Metso Automation Inc Head Office Tulppatie 1 P O Box 310 Fl 00811 Helsinki Finland Tel 358 20 483 150 Fax 358 20 483 151 North America 2900 Courtyards Drive Norcross GA 30071 USA Tel 1 770 446 7818 Fax 1 770 441 9652 Latin America Av Independ ncia 2500 lporanga 18087 101 Sorocaba Sao Paulo Brazil Tel 55 15 2102 9700 Fax 55 15 2102 9748 49 Asia Pacific 238 A Thomson Road 25 09 Novena Square Tower A 307684 Singapore Tel 65 6511 1011 Fax 65 6250 0830 Middle East Roundabout 8 Unit AB 07 P O Box 17175 Jebel Ali Freezone Dubai United Arab Emirates Tel 971 4 883 6974 Fax 971 4 883 6836 www metsoautomation com metso automation Standard delivery content Transm
7. itter TCU with a sensor cable 10 m Mounting kit User s manual Options Process chambers Process couplings Blind flanges See the technical specification sheet for more information Imageneering 7 2005 B8201 1 EN MetsoAutomation Subject to change without prior notice
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