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Summary of Contents for VAF instruments Viscosense 3
- Page 1 Technical Manual Instructions for installation, operation and maintenance ® VISCOSENSE Viscosity Sensor & Interface box ® Valid for ViscoSense Publication nr TIB-775-GB-0517 Supersedes TIB-775-GB-1216...
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Page 2: Table Of Contents
CONTENTS 1. PREFACE ..................2 1.1 General ......................2 1.2 Symbols ....................... 3 1.3 Copyright ..................... 3 2. SYSTEM DESCRIPTION ..............4 2.1 System description ..................4 2.2 System components ..................5 2.3 Principle of operation ................... 6 3. TECHNICAL SPECIFICATION ............7 3.1 Sensor ...................... - Page 3 ENVIRONMENT ............... 23 DISPOSAL ................23 TROUBLE SHOOTING ............. 24 15.1 Disconnection the sensor ................ 24 15.2 General trouble shooting ................. 25 15.3 PI setting errors (for additional viscosity controller) ......... 27 15.4 How to take a HFO sample for analysis ..........27 15.5 Diagnostic information ................
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Page 4: Preface
3 viscosity sensor (VS3) and interface box. ViscoSense For IOM information of associated equipment supplied by VAF Instruments, refer to the separate manual supplied with those products. This manual contains important information for the installer, the operator and for your maintenance department. -
Page 5: Symbols
While every precaution has been taken in the preparation of this manual, no responsibility for errors or omissions is assumed. Neither is any liability assumed for damages resulting from the use of the information contained herein. Specifications can be changed without notice. ® is a registered trademark of VAF Instruments B.V. ViscoSense... -
Page 6: System Description
2. SYSTEM DESCRIPTION 2.1 SYSTEM DESCRIPTION ® 3 is, besides other applications, intended for use in fuel oil treatment systems to obtain a ViscoSense correct measurement and control of the fuel oil viscosity. Figure 1 shows a typical fuel treatment system with return line from the engine. In this system, the degassing/mixing tank operates as a fuel buffer, ensuring gradual changes of viscosity which results in a stable control of the viscosity. -
Page 7: System Components
2.2 SYSTEM COMPONENTS The ViscoSense ® 3 viscosity system consists of: the combined viscosity and temperature measuring sensor the sensor housing Interface box The sensor housing is made of ductile iron and has flanges for direct mounting in the fuel line. The sensor itself is made of stainless steel and is mounted in the housing. -
Page 8: Principle Of Operation
2.3 PRINCIPLE OF OPERATION The operating principle of the sensor is that of a torsion pendulum. The sensor consists of a stainless steel driver / sensor head (1), attached to the base plate (2) by means of a tubular torsion spring (3). In the head, one pair of piezo elements (driver piezos) (4) actuates the pendulum at its torsional resonance frequency, while another pair (the receiver piezos) probes the actual movement of the head. -
Page 9: Technical Specification
3. TECHNICAL SPECIFICATION 3.1 SENSOR Sensor type nr. 0279-0096 Viscosity range 0 - 25/50 mPa.s (other ranges on request) Temperature range 0-200°C Maximum operating temperature 180C Temperature transmitter PT 100 element Accuracy Viscosity +/- 2% instantaneous or 0.5 mPa.s Temperature ±... -
Page 10: Interface Box
(Fluctuations should not exceed ±10% of the nominal value) Power consumption 6 Watt Internal battery Lithium coin type 3V rechargeable, 5 mAh, 6,8 mm (Do not exchange without prior consulting VAF Instruments) Output Viscosity Isolated active output 4…20 mA, current loop, max. load 400Ω Range typ. -
Page 11: Unpacking
5. UNPACKING Let the instruments acclimatize in the location where they are going to be installed for at least one hour inside their shipment box. This is to avoid moisture buildup inside the instrument, or on the connectors and wires. When the equipment is taken out of the box, please leave the transport locking cap and the outside protection, in place as long as possible to avoid any damage. -
Page 12: Conditions For Correct Working Of The Viscosense
For identification purposes it is recommended to record also nameplate data of other ViscoSense ® 3 system components here. Housing Serial number: …………………………… Variant: …………………………………… Sensor Serial number: …………………………… Interface box Serial number: …………………………… Model: …………………………………… ® 6.2 CONDITIONS FOR CORRECT WORKING OF THE VISCOSENSE 3 SENSOR The flow is recommended to be in-between the maximum and minimum fluid flow rate as mentioned in chapter 21.1. -
Page 13: General Installation Recommendations
(inlet, outlet and arrow) as illustrated in figure 8. Support inlet and outlet piping sufficiently. These shut-off valves and bypass valve are not furnished by VAF Instruments. 2. Note that the distance between fuel heater and sensor housing inlet should not exceed 4 metres. - Page 14 4. Allow at least 50 cm clearance to the sensor housing, to be able to take out the measuring sensor for service. 5. The sensor needs a stable environment to act as a counterweight for the pendulum movement. The support must prevent movement and excessive vibrations of the ViscoSense ®...
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Page 15: To Assemble Viscosense ® 3 Sensor
6.4.3 To assemble ViscoSense ® 3 sensor 1. Check the O-ring for damage, before installing the ViscoSense ® 3 sensor. Replace if necessary. Make sure only one original o-ring is installed. 2. Remove transport locking cap from bottom side of flow tube. 3. - Page 16 7. The ViscoSense ® 3 system is now ready for electrical installation. ® Figure 8 ViscoSense 3 sensor assembly...
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Page 17: Electrical Installation
6.5 ELECTRICAL INSTALLATION Provide correct power supply to the interface box. In order to maintain proper EMC protection a shielded cable should be used for 4-20 mA output signals. Recommended cable: 0,50 mm², twisted pair, individually screened, braid shielded and PVC insulated. For correct installation a suitable isolation switch shall be installed in the supply line as near as possible to the equipment. -
Page 18: Connection Of Sensor To Interface Box
6.6 CONNECTION OF SENSOR TO INTERFACE BOX 1. Tighten the cable glands with a spanner 2. Install the wires to the appropriate terminals of terminal J6 Figure 11 Connecting sensor to interface box Figure 12 External connections at interface box... -
Page 19: Installation Checklist Version 1.0
6.7 INSTALLATION CHECKLIST VERSION 1.0 ® ViscoSense Sensor: ® The ViscoSense housing has been installed according the below set-up. (Mark what is correct) Capacity circulation fuel pomp _________ m3/h Does the ViscoSense® housing size match the capacity circulation fuel pomp? DN50 max. - Page 20 Have all electric connections for external signals been made with a twisted pair shielded cable and shields connected at one end only? ® Are the original cable glands used at the ViscoSense interface box? ® ViscoSense Controller: ® The ambient temperature at the ViscoSense controller is not higher than 55⁰C? ...
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Page 21: Operating Instructions
7. OPERATING INSTRUCTIONS Figure 13 7.1 INITIAL START-UP The initial start-up should always be done with diesel oil. 1. Fill the complete fuel system with diesel oil. 2. Open block valves (K and M) and bypass valve (L) 3. Allow diesel oil to enter the fuel system 4. -
Page 22: Maintenance
8. MAINTENANCE 8.1 ROUTINE MAINTENANCE Under normal conditions the ViscoSense ® 3 interface box requires no maintenance. “Normal” means; A clean operating environment ViscoSense ® 3 interface box installed in accordance with the installation instructions given. Operation of the ViscoSense ®... -
Page 23: Repair Or Replacement
® 3 sensor and interface box cannot be repaired on site. They will be either exchanged for a spare unit or send back to VAF Instruments. 9.2 REPLACEMENT When the sensor or interface box is replaced, we refer to chapter 5 and 6 for unpacking and installation instructions. -
Page 24: Take Out Of Service
10. TAKE OUT OF SERVICE Disconnect the power supply to the interface box. The ViscoSense ® 3 sensor should be taken out of the sensor housing and cleaned. See maintenance section for cleaning instructions. To protect the pendulum from damage due to mechanical shocks, the transport locking cap should be carefully placed in-between the flow tube and the pendulum. -
Page 25: Removal And Storage Of Equipment
Both the sensor and the interface box must be stored in a cool and dry place. 12. MALFUNCTION AND SEND FOR REPAIR If the sensor or the interface box fails, they should be sent back to VAF Instruments for repair. 13. ENVIRONMENT There are several electronics inside the Interface box. -
Page 26: Trouble Shooting
15. TROUBLE SHOOTING 15.1 DISCONNECTION THE SENSOR Figure 17 VS3 sensor The sensor and electric wire are moulded together. NEVER TRY TO OPEN THE BACK OF THE SENSOR. THIS WILL DAMAGE THE WIRE AND SENSOR BEYOND REPAIR. The sensor can only be disconnected at the interface box side. -
Page 27: General Trouble Shooting
15.2 GENERAL TROUBLE SHOOTING Problem Possible cause Corrective action No supply to interface box Check supply. No viscosity signal Check fuses. Check electrical connections. Current loop connection broken Check electrical wiring of 4-20 mA output signal Air entrapped in the fuel system Vent the system ®... - Page 28 Problem Possible cause Corrective action Actual viscosity is higher than None Viscosity output is higher expected. (For laboratory check of viscosity than expected E.g. bunker calculator only gives take sample according approx. value. instructions in chapter 15.4). Temperature is lower than expected. Range settings ViscoSense ®...
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Page 29: Pi Setting Errors (For Additional Viscosity Controller)
The sample quantity must be at least 200ml. Write down the actual viscosity and temperature reading when the sample is taken. Send the sealed bottle or sample container with actual readings to a qualified laboratory or to VAF Instruments for analysis. -
Page 30: Diagnostic Information
3 electronics will try to restart the unit if a faulty situation occurs. However, if the fault is persistent contact VAF Instruments or your local authorised VAF dealer and give a detailed description of the problem that occurred and the diagnostic information indicated at the 7... - Page 31 Display Viscosity Temperature Recovery action Fault description message output [mA] output [mA] (attempt) restart Temperature out of range restart Frequency of pendulum out of range restart Unstable phase of pendulum or no pendulum Received measuring signal (Urec) too low (eg very high viscosity) Actual Actual...
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Page 32: Certificates
16. CERTIFICATES Certificates are delivered separately or can be downloaded from www.vaf.nl... -
Page 33: Drawings
17. DRAWINGS ® 17.1 VISCOSENSE 3 SENSOR AND SENSOR HOUSING 17.1.1 ViscoSense ® 3 sensor housing with sensor installed ® Figure 18 Dimensions of ViscoSense 3 sensor (All dimensions in millimetres) -
Page 34: Interface Box
17.2 VISCOSENSE ® 3 INTERFACE BOX 17.2.1 ViscoSense ® 3 interface box ® Figure 19 Dimensions of ViscoSense 3 interface box (All dimensions in millimetres) -
Page 35: Abbreviations
18. ABBREVIATIONS ANSI American National Standards Institute American Wire Gauge Diameter Deutsches Institut für Normung Diameter Nominal EEPROM Electrically Erasable Programmable Read-Only Memory EPROM Erasable Programmable Read-Only Memory Hertz (Frequency) International Electrotechnical Commission Installation, Operation and Maintenance Japanese Industrial Standard Kilograms Light Emitting Diode mPa.s... -
Page 36: Parts Lists
19. PARTS LISTS Spare parts: 0279-0096PH consisting of 0279-0096 ViscoSense ® 3 sensor 0279-0102 dongle / 0690-1202 Micro SD card 19.1 VISCOSENSE ® 3 SENSOR Figure 20 Parts list... -
Page 37: Warranty Conditions
20. WARRANTY CONDITIONS 1. Without prejudice to the restrictions stated hereinafter, the contractor guarantees both the soundness of the product delivered by him and the quality of the material used and/or delivered for it, insofar as this concerns faults in the product delivered which do not become apparent during inspection or transfer test, which the principal shall demonstrate to have arisen within 12 months from delivery in accordance with subarticle 1A exclusively or predominantly as a direct consequence of unsoundness of the construction used by the contractor or as a consequence of... - Page 38 g. all necessary safety and precautionary measures shall have been taken and adhered to, and all measures shall have been taken and adhered to necessary to observe the applicable government regulations in the context of assembly/installation; h. the products shipped shall be available at the correct site at the commencement of and during assembly.
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Page 39: Enclosure
A too high fuel velocity can result in unstable viscosity measurements. A too low fuel velocity will result in a slow and possibly unstable viscosity control VAF Instruments delivers the ViscoSense ® 3 with housing. Refer to the table below for flow rate... - Page 40 Fuel filters There should be two fuel filters, placed parallel. One should be clean and on standby. Fuel filters should be placed in the HFO supply to the booster. The fuel flow is less; therefore the filter can be smaller. ...
- Page 41 Revision 0215 Chapter 17.1.1 drawing 0820-1068 updated Chapter 19.1 drawing 0820-1230 updated Revision 0615: Chapter 6.1. text added Revision 0715: Chapter 19 drawing 0820-1230 adjusted Revision 0516: Chapter 1.1 warning added Chapter 6.5 point 3 adjusted Revision 0916 ® Coating sensor head changed from Teflon to DLC Revision 1216 Drawings updated and layout updated...
- Page 42 Represented by VAF Instruments B.V. Specifications subject to change without notice. Vierlinghstraat 24, 3316 EL Dordrecht, The Netherlands Agents and distributors in more than 50 countries. P.O. Box 40, 3300 AA Dordrecht, The Netherlands T +31 (0) 78 618 3100, F +31 (0) 78 617 7068...
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