KRAL OMS Series Operating Instructions Manual
High-viscosity liquids flowmeters
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Summary of Contents for KRAL OMS Series
- Page 1 Operating instructions KRAL flowmeters. Series OMS High-viscosity liquids OIO 31en-GB Edition 2018-08 Original instructions www.kral.at...
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Page 2: Table Of Contents
Table of contents 1 About this document ............. 3 Connecting the flowmeter to the pipe system .... 18 General information ............ 3 Connecting the pick up .......... 19 Target groups .............. 3 9 Operation................ 20 Symbols................. 3 Dangers during operation .......... 20 1.3.1 Danger levels ............ 3 Commissioning ............ 20 1.3.2 Danger signs............. 4... -
Page 3: About This Document
1 About this document 1.1 General information 1 About this document 1.1 General information These instructions form part of the product and must be kept for future reference. Furthermore please observe the associated documents. 1.2 Target groups The instructions are intended for the following persons: o Persons who work with the product o Operator-owners who are responsible for the use of the product Information on the required qualification of the personnel is provided separately at the beginning of the... -
Page 4: Danger Signs
1 About this document 1.4 Associated documents 1.3.2 Danger signs Meaning Source and possible consequences of non-observance Electrical voltage Electrical voltage causes serious physical injury or death. Raised load Falling objects can result in serious physical injury or death. Heavy load Heavy loads can result in serious back problems. -
Page 5: Safety
2 Safety 2.1 Proper use 2 Safety 2.1 Proper use o Use the flowmeter solely for measuring the flow of liquids that do not contain any gas components or solid particles. o If coarse soiling, solid particles in the liquid or abrasive fine particles occur during operation, the flowmeter has to be protected additionally by a correspondingly dimensioned operating filter in the pipe system. -
Page 6: Dangers During Transportation
2 Safety 2.4 Dangers during transportation 2.4 Dangers during transportation The following safety instructions must be observed: o Have all work only carried out by authorized transport personnel. o Use intact and correctly dimensioned hoisting equipment. o Ensure that the means of transport is in a flawless state. o Ensure that the centre of gravity of the load is taken into consideration. -
Page 7: Dangers During Servicing
2 Safety 2.10 Dangers during servicing 2.10 Dangers during servicing The following safety instructions must be observed strictly: o Have all work only carried out by authorized qualified personnel. o To ensure the measuring precision, the measuring unit may only be replaced by the manufac- turer. -
Page 8: Identification
3 Identification 3.1 Type code 3 Identification 3.1 Type code Series Size OMS-020.XBXXAX.0001 Sensor equipment (pick up) Function of the sensor equipment Material of bearing Material of seal Fig. 1: Type code Mechanical connection Electrical connection Version index Item Designation Description Series Stainless steel Size... -
Page 9: Technical Data
4 Technical data 4.1 Operating limits 4 Technical data 4.1 Operating limits The values specified on the rating plate apply, as well as the values on the calibration certificate if the optional calibration of the flowmeter was ordered. The permissible operating limits of individual values influence each other so that every application is checked individually by the manufacturer when selecting the flowmeter. -
Page 10: Pin Assignment / Connection Diagram
4 Technical data 4.5 Pin assignment / Connection diagram 4.5 Pin assignment / Connection diagram (signal OUT (push-pull)) GND (0 V) (signal OUT (push-pull)) Not connected Fig. 4: Pin assignment / Connection diagram 4.6 Dimensions and weights 4.6.1 Pipe thread (BSPP thread) Pipe thread Outer diameter Total length... -
Page 11: Function Description
5 Function description 5.1 Structure 5 Function description 5.1 Structure Fig. 6: Structure of the flowmeter Connection mechanical O-ring Measuring housing Pole wheel Connection electrical Measuring screw large Pick-up Measuring screw small 5.2 Functional principle Flowmeters belong to the group of rotating displacement meters as screw meters. The pumped liquid makes the measuring unit rotate. -
Page 12: Recognition Of Flow Direction
6 Transportation, storage 5.4 Recognition of flow direction 5.4 Recognition of flow direction In the case of systems with pressure pulsation a reversal of the flow direction can occur briefly. In order to recognize the flow direction the flowmeter is equipped with a two-channel pick up. The flow direction can be determined by means of the additional phase-shifted signal and then taken into account for the calculation of the total values. -
Page 13: Installation, Removal
7 Installation, removal 7.1 Dangers during installation 7 Installation, removal 7.1 Dangers during installation The following safety instructions must be observed strictly: o Have all work only carried out by authorized qualified personnel. o Do not take apart the flowmeter. 7.2 Dangers during removal The following safety instructions must be observed strictly: o Have all work only carried out by authorized qualified personnel. -
Page 14: Installation Types
7 Installation, removal 7.3 Installing the flowmeter 7.3.2 Installation types Flowmeters can be operated in different mounting positions. Both flow directions are possible. The preferred flow direction is indicated on the rating plate by means of a bright arrow Ä Identification, Page 8. Fig. 7: Installation types The arrow with dashed line identifies the preferred flow direction when an operating filter is used. -
Page 15: Installation Recommendation
7 Installation, removal 7.3 Installing the flowmeter 7.3.3 Installation recommendation In order to avoid measuring errors observe the following recommendations of the manufacturer when installing the flowmeter in the pipe system. Preferred installation variant: - Install the flowmeter vertically. - Route the flow from the bottom upwards. Recommendations for alternative installation variants Alternative installation variant: Source for measuring error:... -
Page 16: Installing The Trace Heating (Optional)
7 Installation, removal 7.4 Installing the trace heating (optional) 7.3.4 Installing the flowmeter Personnel qualification: o Fitter o Work clothing Personal protective equipment: o Protective gloves o Safety boots ATTENTION Measuring error through air pocket in the flowmeter. ► During installation ensure that the flowmeter is not installed at the highest point in the pipe system. ATTENTION Measuring error through a lack of counter-pressure. -
Page 17: Removing The Flowmeter
7 Installation, removal 7.5 Removing the flowmeter 7.5 Removing the flowmeter o Fitter Personnel qualification: o Electrician o Work clothing Personal protective equipment: o Face protection o Protective gloves o Safety boots Aids: o Collection tank DANGER Risk of death resulting from electric shock. ►... -
Page 18: Connection
8 Connection 8.1 Dangers during connection work 8 Connection 8.1 Dangers during connection work The following safety instructions must be observed strictly: o Have all the work on the flowmeter and pipe system only carried out by authorized qualified per- sonnel. -
Page 19: Connecting The Pick Up
8 Connection 8.3 Connecting the pick up Notice The screw-in length of the piping may not exceed the threaded length of the flowmeter, since the flow cross-section is narrowed and internal components can be damaged. Remove the protective covers and store them. Place the piping in position and support the weight of the piping. -
Page 20: Operation
9 Operation 9.1 Dangers during operation 9 Operation 9.1 Dangers during operation The following safety instructions must be observed strictly: o Have all work only carried out by authorized qualified personnel. o Ensure that the flowmeter is only operated within the operating limits. o Ensure that during cooling down or heating up the flowmeter is only subjected to slow temperat- ure changes. -
Page 21: Decommissioning
9 Operation 9.3 Decommissioning Requirement: ü The ambient conditions correspond to the operating data ü Flowmeter installed correctly in the pipe system Ä Installation, removal, Page 13 ü Flowmeter connection to the pipe system is stress-free ü Pipe system is free of impurities ü... -
Page 22: Maintenance
10 Maintenance 10.1 Required maintenance 10 Maintenance 10.1 Required maintenance Flowmeters are fundamentally maintenance-free. Under observance of the operating limits Ä Tech- nical data, Page 9, no significant change in the characteristics could be established, even after years of use in many cases. Stresses lying clearly above the rated flow rate can, however, result in excessive wear. - Page 23 11 Disposal 11.2 Dismantling and disposing of the flowmeter Fig. 9: Exploded view Requirement: ü Flowmeter cooled down to the ambient temperature and disconnected from the pipe system ü Flowmeter drained completely ü Flowmeter placed at a location suitable for dismantling Dismantle the flowmeter and disassemble it into its individual parts.
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Page 24: Troubleshooting
12 Troubleshooting 12.1 Possible faults Faults can have different causes. The following tables list the symptoms of a fault, the possible causes and measures for troubleshooting. In the case of faults please contact the manufacturer. Under services@kral.at. Identifica- Fault tion... - Page 25 12 Troubleshooting 12.2 Troubleshooting Fault identifica- Cause Remedy tion Adapt the operating data to the flowmeter. – 2 3 4 5 Wear at the measuring unit and bearings Filter out the abrasive materials. – 2 3 – – Flow impaired at the system end Check whether the fluid flows in the system (pump in operation, slide valve opened, etc.).
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Page 26: Appendix
13 Appendix 13.1 Tightening torque for screws with metric screw threads and head contact surfaces 13 Appendix 13.1 Tightening torque for screws with metric screw threads and head contact surfaces Tightening torque [Nm] + Wedge lock wash- Stainless steel screws A2 and A4 Thread 10.9... - Page 27 Directory of figures Directory of figures Fig. 1 Type code..................................Fig. 2 Rating plate ................................... Fig. 3 Pressure pulses................................Fig. 4 Pin assignment / Connection diagram........................... Fig. 5 Dimensional drawing pipe thread ..........................Fig. 6 Structure of the flowmeter ............................. Fig.
- Page 28 KRAL AG, 6890 Lustenau, Austria, Tel.: +43/5577/86644-0, E-Mail: kral@kral.at www.kral.at...
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