OPERATING INSTRUCTIONS for Flow Meters of the Series VHM
Contents
1. 2 00 ccc eee nennen 12 Control when there is a fault in the communication link 0 20020005 12 Control when the battery is weak 0 0 eee eee 12 Energy saving circuit to extend the life of the lithium battery 222222222200 12 Safety instructions for installation and operation in hazardous areas 13 Maintenance and repairs 0 0 cnet ERER 13 Returning for repairs and sample devices 0000 e cece cece teens 14 Technical data for the VHM Flow Meter 0 0 00 e cece cet e teen ees 14 Dimensions of the VHM Flow Meter 000 c eee ence teen nennen eee 15 Dimensions of the AHM Mounting Plate 000 0 e cece cece ete eee 15 Type Code for VAM AHM 2 0 0 ea en a Sop epic nr ee 16 Technical data for dual pick ups with VDBI fibre optic output 0 20 eee 17 ELDA pay doth edi Gite ee ee rede 18 Electrical Data tcigg ad teeaies yoo tore ee de ae Ob Sas Wawa aha nn 18 Housing Dads umbenennen ee ahi whee Pee OEA ed 18 Ty PO Plt eai e ansehen ar a gs RURAL rears Mold ee ee 18 Fibre optic connection cable n u 2 0 cece eee eee eee 18 List of the types of dual pick ups with fibre optic output 0 20 e eee 18 Technical data for the VUMI fibre optic receiver 0 00 00 cece eee eee eee 19 SIGHGIINPUL essene anete nia aa awn elle ohn pee bee Nes wad bik 20 Signalo vipit sisese ee naeh er er an 20 Failt signalov puts gesi eea a2. any location you want in your system When installing the flow meter you gt must make sure that there is always some fluid remaining in the flow meter and that is can never run dry even when the system is not in operation For this reason the outlet of the flow meter should always be under slight pres Flow meter sure since this firmly fixes the measuring unit of the flow meter in the fluid column the measuring unit is supported in this fashion by the fluid column and the pipeline cannot drain empty In critical cases or when the pipe can Tank run dry when the system is on standby or stopped it is strongly recommen ded to install an additional non return valve in the outlet line Figure 1 Flow meter with backpressure Important Make sure that both the inlet and outlet of the measuring unit of the flow meter are always completely full and that there is some pressure on the outlet This prevents the creation of gas bubbles and the destruction of the measuring unit when the flow rate suddenly increases rapidly and it improves the measurement accuracy at the same time Series VHM flow meters can be mounted with screws on a mounting gt Block mounting plate installed in the pipe Whenever possible you should choose large The flow meter is mounted on a connection plate The connection plate diameter pipes for the piping system and large diameter lines for the hy is installed in the pipe and is equipped with all hyd
3. indicates t signal sensor sender i he Ready for Operation status of the LED red indicates a fault in the light signal transmission i gt Co I Q Pin No 3 blue wire Power supply O V PinNo 2 white wire Signal output MAMMA N r BR Pin No 4 black wire Fault signal output e yy Pin No 1 brown wire Power supply U data communication from the sender Coding for the signal output Coding position J2 insert jumpers for PNP output signals Coding for the signal output Coding position J2 insert jumpers for NPN output signals ding for the fault signal output Coding position J1 insert jumpers for PNP output signals ding for the fault signal output Coding position J1 insert jumpers for NPN output signals Su o o o ee VSE standard connector output of the electronic signals Pin assignment for the VSE standard connector Pin No Pin No Pin No Pin No Signal output Fault signal Digital flow meter 1 Power supply U 9V 30VDC 2 PNP or NPN signal output 3 Power supply OV 4 PNP or NPN fault signal output signals Digital signal when there is a fault in the data communication or when the sender battery is weak and needs to be replaced 19 VSE measurement Signal input Input Signals Signal output Output circuit Output signal Signal resolution Signal vol
4. 16 Test and assessment report BVS PP 12 2105 EG as of 02 08 2012 17 Special conditions for safe use 1 The equipment has to be installed in sucha way that ignition hazard due to impacto or fiction can be excluded 2 The equipment is suited for the following temperature ranges Medium temperature 20 C up to 60 C Ambient temperature Ta 20 C up to 60 C We confirm the correctness of the translation from the German original In the case of arbitration only the German wording shall be valid and binding DEKRA EXAM GmbH 44809 Bochum 02 August 2012 BVS Le Schu Sp A 20120231 LL Certification y Special services unit Page 2 of 2 to BVS 12 ATEX E 058 X This certificate may only be reproduced in its entirety and without change DEKRA EXAM GmbH Dinnendahlstrasse 9 44809 Bochum Phone 49 234 3696 105 Fax 49 234 3696 110 zs exam dekra com VSE measurement VSE Volumentechnik GmbH H nnestra e 49 58809 Neuenrade Germany Phone 49 0 2394 61630 Fax 49 0 2394 61633 Email info vse flow com Internet www vse flow com 12 12 www plakart de
5. 476 0 approx 30 000 approx 5 0 500 0 approx 22 000 approx 6 9 278 0 approx 8 800 approx 7 4 296 0 approx 4 400 approx 14 8 296 0 approx 2 200 approx 8 25 330 0 approx 1 000 VSE measurement Dimensions of the VHM Flow Meter VHM 01 02 VHM 03 Gewicht kg VHM 01 1 68 29 44 12 4 6 M 0 760 VHM 01 2 68 29 44 18 5 6 M6 0 750 VHM 02 1 68 29 44 18 6 6 M6 0 740 VHM 02 2 68 34 44 18 6 6 M 0 860 VHM 02 3 68 43 44 18 6 6 M6 1 075 VHM 03 2 99 50 27 10 25 81 M 12 2 700 The dimensions are given in mm Dimensions of the AHM Mounting Plate AHM 01 02 for side mounting AHM 03 for side mounting Position ofthe cable connections BE Signal pick up Flow meter gt T H lt Mounting plate for side mounting 15 VSE measurement Permissible G O ring G 1 8 6 07 x 1 78 G 1 4 G 1 8 G 1 4 1 8 NPT 7 65 x 1 78 1 4 NPT G a 3 8 NPT NPT size of VHM G 3 8 G 1 2 100 70 3 8 NPT 1 2 NPT The dimensions are given in mm e Type Code for VHM AHM VHM Flow Meter VHM Signal pick up Series modification code Type of seal F FEP FPM standard Type of P Plate connection connection R Piping connection Material 2 v2A 4 V4A Backlash 1 Reduced backlash 2 Normal backlash 3 Increased backlash Measuring 1 Technical data range 3 2 Technical data 3 Technical data Size 01 vHMo1 02 vHMo2 03 VHM 03 16
6. output on the signal or fault signal outputs and the green LED is lit red LED off Control when there is a fault in the communication link If the communication link is broken or not connected properly then the transmission of the signal is disrupted The dual pick up will continue to transmit light pulses in the Standby mode but they are not received by the receiver VUMI The receiver indicates a fault in the communication link when no control pulses are received It outputs a fault signal and the red LED is on red LED on Signal output static Control when the battery is weak If the lithium battery in the dual pick up is empty then you must replace it with a new one The electronics in the dual pick up detects the empty battery and sends light pulses with a different width now to the receiver Signal output static Fault signal output high impedance green LED off Fault signal output high impedance green LED off VUMI In the receiver the pulses are interpreted as indicating a weak battery in the sender The fibre optic receiver then outputs a fault signal and the green LED it off red LED off e Energy saving circuit to extend the life of the lithium battery The dual pick up is equipped with an energy saving circuit to reduce the power consumption in the Standby mode This circuit reduces the current output of the lithium battery during idle time and increases the lifespan of t
7. VSE measurement AHM Mounting Plate AHM Series modification code Version Standard Custom G 1 8 G 1 4 G 3 8 G 1 2 1 8 NPT 1 4 NPT 3 8 NPT 1 2 NPT Type of connection I9noou gt HZ Mounting iti Anschlusslage seitlich position Anschluss unten Material V2A V4A AN co Size oO VHM 01 VHM 02 VHM 03 loo on e Technical data for dual pick ups with VDBI fibre optic output Connector to supply power to electronic board from the lithium battery Electronics board Battery block Type VDBI battery oo Fibre optic cable connection 17 VSE measurement Ex Data Ex Approval Certification Electrical Data Power supply Lithium battery Service life Battery monitor Battery connection Battery mount Output Output signal Flow meter signals Monitor signals Switching frequency Housing Data Dimensions Fibre optic cable connection Material Media temperature Ambient temperature Protection class Weight Type Plate Fibre optic connection cable Fibre optic cable Strain relief Outer sheath Outside dimensions Bending radius BVS 12 ATEX E 058 X according to Declaration of Conformity gt II 1 G Ex ia op is IIC TA Ga Built in encapsulated lithium battery use only original parts 3 6 V 13 5 Ah with protective circuit encapsulated Approx 1 2 years integrated energy saving circuit in the Standby mode Built in bat
8. a ea an elek 20 LEDiindiestorss 4 eh es bik A ee eek 20 Operating values ann ae ns an a an ner 20 Housing Data unten ciate SMa Ban Dia as nu aan 20 List of types of fibre optic receivers 22222eoseseeeeeseeneeneenee nennen 20 Accessories for the fibre optic system 0 00 60 e teens 20 Type Codes Signal Pick ups cui 6 cee cen cade chance ceeds edaus ar denn 21 Media and ambient temperatures 22222cseeseeseeseeseesennen sen nennen 22 Flow meter labels and certifications 2222e22cseeeeeseeseeseeseenee nn 22 EC Type Examination Certificate 0 2 ene nee ene eens 23 VSE measurement Important basic information Dear customer dear user These installation and operating instructions should provide you with the information you need to properly install and commission the flow meter in potentially explosive hazardous areas according to the regulations The installation commissioning and testing are only to be performed by trained and qualified personnel with knowledge of the relevant national regulations relating to explo sion protection These operating instructions must be read and the instructions followed carefully to ensure proper trouble free and safe operation of the flow meter VSE is not liable for any damage incurred resulting from not complying with the instructions in these operating instructions It is not permitted in any case to open the device These operating instructions for flo
9. a power source via a cable and they output digital signals for electronic processing There is a declaration of conformity available for all flow meters It can be obtained upon request Since the EM compatibility of the overall measurement system also depends on how the cables are routed on proper connection of the shielding and on every device connected to the system it must be ensured that all components meet the requirements in the EMC guidelines and that the electromagnetic compatibility of the entire system machine or plant is guaranteed e General requirements for operation Before installation or operation you must check the following properties of your system and take the following aspects of the corresponding conditions in your system into account for trouble free and safe operation of the system 1 The medium to be processed s the flow meter suitable for the medium s the medium viscous or abrasive Are there any fillers or other additives in the medium s it necessary to install a hydraulic filter before the meter Which types of cleaners are used Can the seals withstand the cleaning agents and medium III IIND V I Imp 1 K factor Series VHM with fibre optic system are operated in fluid technology ap plications in difficult environments such as areas subject to electromagnetic interference high voltages or an explosion hazard The system consists of a dual pick up unit that sends light pulses o
10. reason only flow meters with the corresponding Ex certification and Ex identification plates in connection with special certified safety equipment are permit ted to be used in any areas subject to an explosion hazard The VHM with fibre optic system flow meters from the VSE GmbH are designed to have the intrinsic safety i type of protection The intrinsic safety i type of protection means that the energy in the circuit is so low that no sparks arcs or temperatures can be generated that could cause ignition The European standards basically divide equipment into two different ex plosion groups Flow meters belong to Group II Electrical equipment for hazardous areas Equipment in Group II is divided further into explosion subgroups and temperature classes gt IIA e g acetone ammonia benzene pure methane propane gt IIB e g ethylene city gas lighting gas hydrogen sulfide VSE measurement The most dangerous substances are placed in Group IIC Devices autho rized for Group IIC can also be operated with substances from Group IIA and Group IIB The ignition temperature defined as the temperature at which a mixture self ignites in a fixed test setup is directly related to the temperature class The temperature class specifies the maximum surface temperature of the electrical equipment and must be lower than the ignition temperature of the flammable substance to prevent ignition The temper
11. H Bochum dated 02 August 2012 Signed Dr Franz Eickhoff Signed Stephan Ruhnau Certification body Special services unit Page 1 of 2 to BVS 12 ATEX E 058 X This certificate may only be reproduced in its entirety and without change DEKRA EXAM GmbH Dinnendahistrasse 9 44809 Bochum Phone 49 234 3696 105 Fax 49 234 3696 110 zs exam dekra com 23 VSE measurement 13 Appendix to 14 EC Type Examination Certificate BVS 12 ATEX E 058 X 15 15 1 Subject and type Flow meter system type VHM V B Ex Instead of the in the complete denomination numerals and letters will be inserted which characterize different models 15 2 Description The flow meter system type VHM V B Ex consists of the battery operated pre amplifier V B Ex and the gear tooth flow meter VHM The motion of the gear HAW is contactless sampled by one or two moulded sampling coils Via the pre amplifier an Mi Ht electronic conversion of the measured values is performed The converted signal is led toa THA fibre optic transmission diode and can be transmitted via optical fi bres to data aii iil Il Ht Hil Hin equipment H Il i j I i ti f N jji 15 3 Parameters A HN i IM i Hi I Nominal battery voltage 3 6 Vv Hil Hit I 1 Max optical radiation power lt 35 mW i Hi iij Medium temperature 20 C up to 60 C Wi I Hill Ambient temperature Ta 20 C up to 50 C HH MM Hii ul
12. VSE measurement OPERATING INSTRUCTIONS for Flow Meters of the Series VHM with Fibre Optic System VSE Volumentechnik GmbH H nnestra e 49 58809 Neuenrade Germany Phone 49 0 2394 61630 Fax 49 0 23 94 616 33 Email info vse flow com Internet www vse flow com Table of Contents Page Important basic information sisser enoe erar ee hehe de 3 Flow meter function description 22222ecseeseeseeeeeseeseeseeseeneenennen 4 Flow meterselection u 2 u 4 2u 0 0er Uhh een ene pas 4 Decl rationiof Eonformityes r strn ee ea HT Er in 4 General requirements for operation 2 2 0 cece eee tenet tt ene eee eee 4 Maximum operating pressure uus essen essen een 5 Flow rate measurement range 0 2 eee e ia 5 Installing th flow meter cu 4 3 0444 ah eeeah dds cdeddd ie aa es 6 Cleaning and rinsing the pipes before operating 000 0 cece eee eee eee 7 Flow meters in environments subject to an explosion hazard 0000 eee eee 7 General information on using devices with intrinsically safe circuits 8 VSE VHM Ex type with fibre optic system flow meters 00 0000 c eee eee 8 Preamplifier for fibre optic cable and fibre optic receiver 0 0 e eee eee ee 8 Installation of VHM flow meters with fibre optic cable 0 00000 e eee eee 10 Control signals of the fibre optic system 2 0 eee eee eens 12 Control when the system is intact
13. ame and address of the manufacturer CE marking Type designation for dual pick ups with fibre optic output Marking according to Directive 94 9 EC Type designation for fibre optic receiver VSE Volumentechnik GmbH H nnestra e 49 58809 Neuenrade Germany C Eiss VDBI K Ex x II 1G Ex ia IIC T6 T4 VUMI S N The current publication of this operating instruction supersedes all information from previous publications VSE reserves the right to make changes and substitutions VSE is not liable for any printing errors Reproduction including excerpts is permitted only after written approval by VSE VSE reserves the right to modify technical data at any time Last revised 12 2012 22 VSE measurement EC Type Examination Certificate 1 2 3 4 5 6 7 8 9 10 11 12 Translation EC Type Examination Certificate Equipment and protective systems intended for use ee in potentially explosive atmospheres Directive 94 9 EC Ny No of EC Type Examination Certificate BVS 12 ATEX E 058 X Equipment Flow meter system type VHM V B Ex Manufacturer VSE Volumentechnik GmbH Address H nnestra e 49 AN 58809 Neuenrade Germany Mh j id I ti The design and construction of this equipment and any acceptable variation thereto specites i ih the appendix to this type examination certificate li Ih i TH Hii I Hi fi Ht The certification bo
14. at a temperature of 20 C For the measure ment range with viscosities gt 10 mm s VSE specifies a measuring accura the criteria specified in Section 3 Paragraph 3 This means that the devices must be designed and manufactured in accordance with the provisions of good engineering practice applicable in a member state This is hereby confirmed The section also stipulates that such pressure equipment and components or accessories are not allowed to bear the CE marking in ac cordance with the Pressure Equipment Directive This means that a declara tion of conformity is not issued for VSE flow meters and the devices are not provided with the CE mark as pertaining to Directive 97 23 EC cy of up to 0 5 of the measured value and a repeat accuracy of 0 5 For viscosities from 1 to 10 mm s a measuring accuracy of up to 1 0 of the measured value and a repeat accuracy of 0 5 is specified VSE measurement Important Make sure that the maximum permissible operating pressure specified for the flow meter cannot be exceeded in any operating mode of the system Note the flow rate range of the flow meter which depends on the viscosity of the medium to be measured Installing the flow meter The flow meter should be installed in a location with easy access so that it Non return valve can be easily removed to clean the gears Since flow meters can operate in any mounting position and any direction of flow you can mount them at
15. ature class specifies the maximum surface temperature of the electrical equipment and must be lower than the ignition temperature of the flammable substance to prevent ignition see page 22 Media and ambient temperatures e General information on using devices with intrinsically safe circuits DIN EN 50014 contains general regulations for the design construction and testing of electrical equipment intended for use in explosive atmos pheres and specifies the contents of the documentation provided with the devices For appropriate operation in explosive atmospheres the national rules and regulations absolutely must be observed and followed at all times The fol lowing contains some information in particular information on the basic directives from the European Parliament 94 9 EC Important Persons assigned or contracted to install commission and operate the devices must have appropriate qualifications above and beyond those required for their normal tasks In particular they must have knowledge of explosion protection For the owner operator the most important guidelines for the setup instal lation operation testing and maintenance of the system in a hazardous area are among others the guidelines ATEX 95 ATEX 137 and the Europe an standards EN1127 1 EN 60079 10 EN 60079 14 and EN 60079 17 These guidelines must be followed e VSE VHM Ex type with fibre optic system flow meters Through the u
16. ction of flow in the diagram shown The wiring diagram shows the processed signal from when connected in this manner Extreme environment Safe area Fibre optic Processor Fibre optic receiver VHM Flow Meter Figure 3 Wiring diagram for the measuring system Connector No Wire color Description 1 Brown Power supply voltage U 9 V 30 V 2 Blue Power supply voltage 0 V 3 White Digital signal output flow meter pulse Digital fault signal output 4 Black aA i indicates a fault in the fibre optic connection or a weak battery in the flow meter The synthetic fibre optic cable is to be cut to the desired length The cut from the cut ends of the cable Now insert the ends of the fibre optic cables edge must be angled and polished smooth so that the light signal is not in the connection on the dual pick up on the flow meter an on the receiver attenuated too much Use the appropriate tools to smooth the cut surfaces Once the fibre optic cable is inserted until it goes no further you must tigh preferably with fine sandpaper Remove 6 mm of the protective coating ten the screw so that the fibre optic cable is securely fastened in the device gt Fibre optic cable Cable with 6mm insulation Figure 4 Fiber optic cable 10 Check to see if the fibre optic cable is properly connected using the LEDs in the receiver and the output signals When the connection is established the green LED is lit When opera
17. dy of DEKRA EXAM GmbH notified body no 0158 in accordance with Article 9 of the Directive 94 9 EC of the European Parliament andthe Council of 23 March 1994 certifies that this equipment has been found to comply with the Essential Health and Safety Requirem ing to ts relati the design and construction of equipment and protective systems intended for use N potentially explosive atmospheres given in Annex ll to the Directive The examination and test results are recorded in the test and assessment report BVS PP 12 2105 EG Il I J il The Essential Health and Safety Requirements are assured by compliance with EN 60079 0 2009 General requirements EN 60079 11 2012 Intrinsic safety V EN 60079 26 2007 Equipment with equipment protection level EPL Ga EN 60079 28 2007 Protection of equipment and transmission systems using optical radiation If the sign X is placed after the certificate number it indicates that the equipment is subject to special conditions for safe use specified in the appendix to this certificate This EC Type Examination Certificate relates only to the design examination and tests of the specified equipment in accordance to Directive 94 9 EC Further requirements of the Directive apply to the manufacturing process and supply of this equipment These are not covered by this certificate The marking of the equipment shall include the following x 111G Ex ia op is IIC T4 Ga DEKRA EXAM Gmb
18. e drops in the system Are the hydraulic connections supply and return correctly connected and sealed A blocked flow meter can stop the flow throughout the system Is there an overpressure valve bypass present in the system Have you selected the best possible flow meter for your application Does the power supply voltage applied match the voltage required by the flow meter s the power supply voltage for the fibre optic receiver sufficiently filtered Does the power supply output the amount of power required by the fibre optic receiver Was the electrical connection wired according to the connection diagram provided s the cable shielding on the cable to the signal processor connected to the ground conductor s the flow meter securely connected to the grounded PE conductor via the pipe for example s the measuring unit of the flow meter isolated from the grounded PE conductor e g connected using a sleeve If this is the case then the measuring unit must be connected to the grounded PE conductor Are the wires on the signal processor connected correctly and properly Does the overall system conform to the electromagnetic compatibility EMC directives as required by law Does the overall system conform to the electromagnetic compatibility EMC directives as required by law gt Were the legal regulations and guidelines for explosion protection followed during the installation of the flow meters and other components in the
19. e type of output signal desired is easy to select by setting the 2 separate programmable jumpers in the receiver accordingly The signal pick up is supplied with power by the built in long life lithium battery In the Standby mode the integrated energy saving circuit switches off some of the electronics to save battery power Due to the energy saving circuit and the low power consumption of the circuitry a battery service life of about 1 2 years without a battery change is achieved The dual pick up has a built in battery monitor that automatically detects a weak battery Important Use only original parts from VSE The fibre optic receiver is equipped with a switch to detect if the light signals were correctly transmitted If communication fails due to a break in the fibre optic cable improper connection or a light signal that is too weak then the receiver outputs a fault signal This signal can be processed further in the subsequent signal processor The fault signal is automatically reset once the fault has been eliminated The signal processor is informed of all of the types of faults described abo ve using a common fault signal The fault signal output informs the operator of the system that there is currently a fault in the system The type of fault is indicated by 2 LEDs built in to the fibre optic receiver The LEDs indicate the corresponding fault as shown in the following Output signal with dual pick up double
20. explosion hazard They are often used in spray painting systems that operate using electrostatic charges in hazar dous areas The dual signal pick up is built into a metal housing functioning as a Fara day cage which protects the pick up from electromagnetic radiation This effectively protects the electronics from extreme external influences so that they will not become defective The dual pick up VDBI is screwed on the flow meter and detects each tooth of the gear using two independently operating carrier frequency os cillators When the gear rotates each of these sensors generates a pulse when a tooth of the gear passes through the detector By detecting the motion with two sensors you obtain two pulses per tooth The dual pick up converts the pulses from both sensors to light pulses and sends them to the receiver VUMI via synthetic fibre optic cables The receiver then converts the light pulses from the signal pick up back to electrical pulses and transmits them to the electronic signal processor for further processing Each output signal from the fibre optic receiver has a resolution of 1 2 of the measured volume per pulse VSE measurement one measurement volume 1VM one chamber volume one tooth one gap one movement of tooth 360 Figure 2 Signal output The fibre optic receiver outputs the output signal and the fault signal as PNP or NPN output signals Th
21. gear method The two gears in the meter are put in motion by the fluid flowing through the flow meter The motion of each tooth of the gear is measured by a dual signal pick up that is securely mounted to the flow meter When the gear rotates each of these signal pick ups generates a digital output signal when a tooth of the gear passes through the detection area The output signals from both pick ups are then added electronically so that two electrical output pulses are generated for each volume of fluid measured This volume of fluid is enclosed within the gap between the teeth and the housing and is transported out when the gear rotates The volume of fluid output by one gap is called the measurement volume V that determines the value of the pulse depending on the size of the flow meter Flow Meter Selection The right choice rating of the type and size of the flow meter is the deciding factor for the trouble free and safe operation of flow meters Due to the wide variety of applications and flow meter designs the technical data provided in the VSE catalogs are of a Declaration of Conformity VHM with fibre optic system series flow meters for areas subject to an explosion hazard have been tested for their electromagnetic compatibility and noise emission according to the EMC regulations and meet the requi rements of the applicable legally mandated EMC directives They cannot be operated independently They must be connected to
22. he battery The energy saving circuit switches the power supply of one carrier frequency board off cutting the power consumption in half 12 When in the Standby mode a carrier frequency sensor monitors the flow When the fluid starts to flow the sensor detects when a measurement is started and switches the power supply of the second carrier frequency on Now both carrier frequency sensors are enabled and the measurement starts The dual pick up outputs light pulses About 4 2 minutes after the measurement is finished and the flow rate drops to O l min the second car rier frequency board is switched off reducing the power consumption The battery has an average lifespan of about 1 2 years If the dual pick up is in the idle state for long periods of time then the lifespan increases VSE measurement Safety instructions for installation and operation in hazardous areas Only qualified personnel meaning authorized persons with special explosion protection training are permitted to install explosion protected equipment and systems The qualified personnel must have read and understood the installati on regulations and the corresponding type examination certificates and declarations of conformity Work may only be done on the devices when in a de energized state Before you operate the flow meter you must carefully clean and rinse the entire system so that no foreign particles from the installation can get into the measuring
23. insing the pipes before operating Before you operate the flow meter you must carefully clean and rinse the entire system so that no foreign particles can get into the measuring unit of the flow meter when it is being installed Foreign particles can block the measuring unit and damage it so badly that the flow meter is unable to sup ply any valid measurement values any more and must be sent in for repair After completion of the system or installation of the piping you must first ca refully clean and rinse the entire piping system and the tank The flow meter must be removed from the piping system to do this Use a rinsing agent that is compatible with the medium to be used later during operation and will not cause any undesired reactions You can obtain the corresponding in formation from your supplier the manufacturer of the medium or from VSE Important Please clean the pipes and the tank thoroughly since foreign particles and residue in the pipes can get into the measuring unit of the flow meter and block it or even destroy it VSE measurement Flow meters are measuring sensors manufactured to high precision They have a mechanical measuring unit consisting of two gears and that is fit tightly with small gaps between it and the housing Even the tiniest amount of damage to the gears or bearings will cause a measurement error For this reason you must always make sure that no foreign particles can get into the meas
24. low meter housing must be safely protected from impact or sharp edges tools or other items The preamplifier housing is made of die cast aluminum The generati on of impacts and friction especially between aluminum and steel must be prevented so that the production of sparks is ruled out When using the flow meters from the VHM series in areas requiring Category 1 equipment the sensor is to be installed so that sparks from impact or friction can be ruled out You may not change or extend the devices in any way if the modi fications were not expressly permitted by the manufacturer If the pre amplifier housing is opened then the explosion protection certifica tion becomes invalid VSE flow meters are basically maintenance free However it is recommended to send the flow meters back to the factory at regular intervals for inspection particularly in difficult applications when critical media are used e g when using abrasive contaminating media or media containing fillers or pigments when high viscosity media are used or when very heavy strain is placed on the measuring unit e g when the flow changes often and quickly In this manner any minor damage can be detected and eliminated early before the damage leads to total failure during production whether the failure is caused by a faulty bearing or a blockage of the gears The owner is responsible for regular inspections maintenance and recalibration The flow meters
25. loyees and makes our job easier When these instructions are not followed the package will be retur ned at the sender s expense Technical data for the VHM Flow Meter Size Measurement Range l min VHM 01 1 0 01 1 VHM 01 2 0 01 1 VHM 02 1 0 05 2 VHM 02 2 0 10 4 VHM 02 3 0 40 8 VHM 03 2 0 50 20 The exact data can be found in the calibration report Measurement accuracy Repeating accuracy Materials Gear bearings Seals Max operating pressure Medium temperature fibre optic system Ambient temperature Viscosity range Installation position Direction of flow Installation 14 Measured volume V ml Hz approx 0 035 approx 0 045 approx 0 120 approx 0 225 approx 0 450 approx 1 010 0 5 of the measured value at viscosities gt 10 mm s 1 of the measured value at viscosities 1 10 mm s 0 5 under the same operating conditions Gear housing Stainless steel 1 4404 Gears Stainless steel 1 4462 Gear bearings tungsten carbide Preamplifier housing Stainless steel 1 4305 or aluminum Bearing bush ball bearings optional PTFE with FPM core or PTFE 250 bar 20 60 C 4 F 140 F 20 50 C 4 F 122 F 1 20 000 mm s Any See the direction of the arrow on the flow meter On the mounting plate with piping connections or as a piping system custom version Frequency K Factor imp liter approx 5 0
26. may not be used in any case when damage or a fault is detected in the meter Repairs may only be performed by the manufacturer or by authorized personnel Any other repairs must be examined by an expert 13 VSE measurement e Maintenance and repair of devices To ensure fast and economical repair of the flow meters and other compo nents it is absolutely necessary to include a precise description of the pro blem or error with the package you send back to the factory Furthermore a safety data sheet must also be enclosed in which it is clearly stated which medium was used with this flow meter and how hazardous the correspon ding medium is The legal regulations relating to occupational safety ArbStattV accident prevention regulations regulations relating to environmental protection waste disposal AbfG and water resources law WHG oblige compa nies to protect their employees other persons and the environment from harmful effects when handling hazardous substances If additional safety precautions are still required in spite of thorough draining and cleaning of the flow meter then this information absolutely must be enclosed in the package sent back to the factory Note that examination and repair of any flow meters sent to VSE Volumen technik GmbH will only be performed when the safety data sheet of the medium used is enclosed and the flow meters have been completely clean and rinsed This serves to protect our emp
27. pulse I gt t The signal pick up informs the fibre optic receiver of the low battery state and the receiver then outputs a fault signal The fault signal indicates a weak battery status in the dual pick up and can be processed in the subse quent signal processor to trigger an alarm or output a signal The system will continue to operate for a while without any problems after a fault has occurred However the lithium battery should be replaced in the near futu re due to its low charge The battery is easy to replace as the lithium battery is just pushed into the signal pick up and connected using a plug connector Once the battery has been replaced the system is ready for operation again and the fault signal is switched off 1 LED indicates the Ready to Operate state of the lithium battery in the dual pick up 2 LED indicates a fault in the fibre optic communication link The VUMI fibre optic receiver must be installed in the non hazardous area It is enclosed by aluminum housing and can be mounted on the wall or in a control cabinet It is mounted using 2 screws VSE measurement Installation of VHM flow meters with fibre optic cable The following figure shows the wiring diagrams for flow meters inthe VHM the flow meter With this measuring system you can measure the flow rate with fibre optic cable series Connect each piece of equipment as shown and the volume However it is not possible to detect the dire
28. r in the system Rot system status No supply voltage Power supply failure LED off present broken cable or wire connector not plugged in fuse defective System O K and LED off ready for operation Flow meter operating and outputting signals System O K and ready for operation LED off Flow meter standing still and not outputting signals Error during transmissi Fibre optic cable bro LED on on of the optical signal ken unplugged or not connected properly Error during transmissi Fibre optic cable bro LED on on of the optical signal ken unplugged or not connected properly Battery in flow meter Battery in flow meter is weak must be replaced LED off Flow meter is opera since the voltage has ting and outputting dropped below the signals minimum voltage Battery in flow meter Battery in flow meter is weak must be replaced LED off Flow meter standing since the voltage has still and not outputting signals dropped below the minimum voltage 11 VSE measurement Control signals of the fibre optic system Control when the system is intact In the Standby mode the dual pick up outputs a light pulse every 4 se conds This light pulse is transmitted by the fibre optic cable to the receiver When this pulse is received by the receiver it knows that the communication Signal output static Fault signal output high impedance green LED off link is intact and the fibre optic cable was connected properly No signal is
29. raulic connections draulic supply and return This reduces the effect of a pressure drop and and mounting holes required for mounting the flow meter lowers the flow rate in the overall system VSE supplies connection plates with various pipe thread sizes and with The flow meter is screwed onto the connection plate using pan head screws mounting holes on the side or back for all flow meters in the VHM series Tighten the screws by hand as tight as they will go first In special cases the Depending on the conditions present the pipe installed the diameter of flow meter can also be mounted directly in the pipe the pipe or the type of pipe thread the user can choose the appropriate connection plate and install it in the system or machine without requiring any reduction sleeves Important When mounting the flow meter you must make absolutely sure that the seals are not damaged in any way and are seated correctly in the hydraulic connections of the flow meter Incorrectly installed or damaged seals can result in leakage and a leaky system which can have significant consequences in some cases The yellow plastic stoppers in the hydraulic connections of the flow meter protect the measuring unit from dirt and contamination when the flow meter is placed in storage or for transportation purposes You must remove these stoppers so that the inlet and outlet are unplugged and open before you mount the flow meter e Cleaning and r
30. se of fibre optic FO technology there is complete sepa ration of the VDBI dual pick up system sender voltages in the hazar dous area from the VUMI receiver unit voltages in the non hazardous area since there is absolutely no electrical connection The circuits in the dual pick up system are designed to be intrinsically safe and are supplied with power by a separate power supply consisting of lithium batteries The pulses generated are transmitted to the receiver in the non hazardous area via fibre optic cables This ensures the intrinsic safety of the devices in the hazardous area The receiver and the signal processor must be installed in the non hazardous area because they do contain non intrinsically safe circuits The fibre optic version of the VSE flow meter is listed in the ia category and is permitted for use in Group IIC environments They can be used in Zone 0 1 and 2 for gases and vapors when the permissible media and ambient temperatures are observed and the installation regulations are fol lowed The VSE flow meters are not authorized for use in areas subject to a dust explosion hazard Preamplifier for fibre optic cable and fibre optic receiver Dual signal pick ups VDBI with fibre optic outputs are used in areas subject to extremely difficult conditions They are suitable for use in envi ronments subject to heavy electromagnetic interference in high voltage areas and in rooms subject to an
31. sult An explosion can injure people damage buildings destroy parts of the system or even ignite other flammable substances All electrical equipment installed and operated in an explosive atmosphere requires approval for the corresponding zones and must be equipped with a special identification plate The category i Intrinsic Safety DIN EN 50020 is subdivided into gt ia intrinsically safe when two independent faults occur ib intrinsically safe when one fault occurs Areas subject to an explosion hazard are divided into zones The basis for classifying the zones is the probable frequency of occurrence and duration of the explosive atmosphere The division of the areas into zones is done by the company itself which means the customer as an operator is responsible for the division into zones The zone definitions can be found in EN 1127 1 in the section on Fundamentals and Methods for explosion protection Further informati on on zoning is provided in EN 60079 10 and the collection of examples in the explosion protection rules Ex RL Technical inspectors from professio nal societies can also be contacted for help The customer can also always contract explosion protection experts from the TUV to define the zones In any case you must obtain approval from the board of industrial and trade supervisors The operation of electrical equipment and systems in hazar dous areas is subject to very specific legal regulations For this
32. system gt Systems in which a malfunction or failure can lead to personal injury are to be equipped with suitable safety equipment The function of this safety equipment is to be checked at regular intervals e Maximum Operating Pressure Before installing the flow meter you must make sure that the maximum operating pressure of the system does not exceed the maximum permissi ble operating pressure of the flow meter Note also the peak pressures that can arise when operating the system Important The maximum operating pressure for flow meters in the VHM series is 250 bar Information about the EU Pressure Equipment Directive 97 23 EC VSE flow meters of the RS series qualify as pressure equipment as de fined by Section 1 Paragraph 2 1 4 of the directive listed above and as such are affected by the regulations of this directive VSE flow meters must therefore meet the technical requirements specified in Section 3 Paragraph 1 4 of the directive The fluids to be measured are for the most part Group 2 fluids acc to Section 9 Paragraph 2 2 VSE flow meters do not reach the limit values specified by Section 3 Paragraph 1 1 The technical requirements for VSE flow meters are therefore confined to Flow rate measurement range The flow rate measurement range Qn Qna of the flow meter speci fied in the data sheet is based on a test medium consisting of hydraulic oil with a viscosity of 21 mm s
33. tage Signal current Fault signal output Output circuit Output signal Signal voltage Signal current LED indicators Ready for operation Communication fault Operating values Operating voltage Power consumption Housing Data Overall dimensions Housing dimensions Mounted with Material Color Temperature range Protection class Weight List of types of fibre optic receivers VUMI OS00 N Lichtleiter Eingangs Transistor digitale Lichtsignale vom Zweifachaufnehmer Volumensensorsignale Kontrollsignale im Standby Signale von der Batterie berwachung Transistor with series resistor R 1 2 KQ PNP or NPN output programmable using two coding jumpers Ya of the measured volume per pulse frequency doubling U 9 30 V depending on the power supply voltage 10 mA maximum for operating voltages gt 16 V DC Transistor with series resistor R 1 2 KQ PNP or NPN output programmable using two coding jumpers U 9 30 V depending on the power supply voltage 10 mA maximum for operating voltages gt 16 V DC green LED red LED U 9 30VDC 8 mA Total length of fibre optic cable and connector 98 mm Length 64 mm Width 58 mm Height 37 mm 2 M4 screws Aluminum Gray RAL 7001 25 C 13 F 60 C 140 C IP 54 218g screw mounted plug connection e Accessories for the fibre optic system VDBI battery FO cable 5m FO cable 10m FO cable 15m FO cable 20 m 20 Encapsula
34. ted lithium battery for all dual signal pick ups Synthetic fibre optic cable length 5 m Synthetic fibre optic cable length 10 m Synthetic fibre optic cable length 15 m Synthetic fibre optic cable length 20 m Other fibre optic cable lengths max lt 20 m are available upon request VSE measurement e Type Codes Signal Pick ups Version Standard BE Ex intrinsically safe Series Cable entry Plug connector with VSE standard connector standard Connection K 58 A HI lt gt 29 5 Flow meter VHMO1 Flow meter VHMO2 KE Flow meter VHMO3 Sensor grounding not grounded to OV standard Connection u Supplied by a lithium battery with fiber optic output See are Input Light pulses Output Electrical digital pulses Signal pick up Two channel pick up pulse x 2 pulse x 4 Two channel pick up 6 JE pul pulse x 1 Converter fiber optic receiver e oe and transducer for snap on optional mounting With the VDB series fiber optic output the signal can only be doubled pulse x 2 21 VSE measurement e Media and ambient temperatures Temperature class T6 TA Media temperature 20 C 4 F max permissible 60 C 140 F Ambient temperature 20 C 4 F max permissible 50 C 122 F Flow meter labels and certifications N
35. tery status monitor Polarized plug connector Side mounted battery can be pushed into the housing Fibre optic output diode Digital light signal to the fibre optic receiver flow meter signals control signals in the Standby mode signals from the battery monitor Pulses with a frequency proportional to the flow rate Control signal to monitor the light signal communication link and the battery status signal f 3 Hz 1 5 KHz 78 mm height 62 mm total height with sensor 72 mm PG 7 length of threaded cable connector 20 mm Anodized aluminum stainless steel coil holder 20 C 4 F 60 C 140 F 20 C A F 50 C 122 F IP 54 438 g VSE D 58809 Neuenrade Type VDBI K Ex SerialNo Year of Manufacture LCIEO2ATEX6136X x II 1G EEx ia IIC T6 CE oss Silicon free synthetic fibre optic cable with two layer protective sheathing Aramide fibres Orange polyurethane flame resistant 3 5 mm 0 2 gt 70 mm for short periods during installation gt 50 mm long term List of the types of dual pick ups with fibre optic output VDBI 1KOO N VDBI 2KO0 N VDBI 3K00 N VDBI 1KOO Ex VDBI 2KO0 Ex VDBI 3KOO Ex 18 Fibre optic cable connection Fibre optic cable connection e Technical data for the VUMI fibre optic receiver VSE measurement Fibre optic cable connection FO cable from signal sensor sender _ LED green
36. ting the flow meter for the first time you must connect the lithium battery in the dual pick up first because it is unplugged for transportation The receiver also contains non intrinsically safe circuits and may not be installed in hazardous areas or in extreme environments The non intrin sically safe circuits are to be installed according to DIN VDE 0100 410 The output signals from the flow meter and the fault signal can be output by the fibre optic receiver as PNP or NPN signals The type of output signal is programmed using the signal output and fault signal output coding jumpers The codes are described in the figure Flow meter Fault signal LED Gr n No signal No signal LED off Signal No signal LED on No signal No signal LED on No signal Signal LED on No signal Signal LED off Signal Signal LED off No signal Signal LED off VSE measurement VSE supplies a 4 pin connection cable for EMC safe operation One end of the cable there is a polarized VSE standard connector that is plugged into the 4 pin output connector of the fibre optic receiver The other end is open so you can connect it directly to the signal processor You must connect the shield at the signal processor end to the grounded PE conductor or ground for EMC safe operation The status of the system is indicated by the red and green LEDs on the fibre optic receiver The individual operating states are described in the following table LED Description of the Erro
37. unit of the flow meter The pipes and the flow meter must always be filled when in operation so that no gas bubbles can form Extremely dirty media or foreign particles in the medium can block damage or even destroy the measuring unit In these cases you should always install a sufficiently large filter before the flow meter so that no foreign particles or substances can get into the measuring unit and damage the flow meter The VSE flow meters are not authorized for use in areas subject to a dust explosion hazard The owner must maintain the system in proper operating condition operate the system properly monitor it constantly perform the necessary maintenance and any related work immediately and follow the relevant safety regulations when doing so This procedure known as continuous monitoring will eventually be adopted as a new law in Europe e Maintenance and repairs When equipment is connected electrically a Verification of Intrinsic Safety must be performed EN 60 079 14 Even if an intrinsically safe circuit is connected just once to a non intrinsically safe circuit then the piece of equipment is not authorized for use anymore as a device with intrinsically safe circuits The permissible ambient and media temperatures in the correspon ding temperature class may not be exceeded at any time when operating the flow meter When operating or performing maintenance or repairs on the flow meter the surface of the f
38. uring unit and that the medium being measured is always completely free from contamination Once the system has been thoroughly rinsed and there are no foreign par ticles in the piping system you can mount the flow meter and start opera tions Flow meters in environments subject to an explosion hazard The operation of flow meters in areas with a hazard of explosion is subject to very specific legal regulations For this reason only flow meters with certified Ex authorization are permitted to be used in areas subject to an explosion hazard To protect people from harm and equipment from damage lawmakers have issued national and international standards containing regulati ons that must be followed when using electrical components and systems in explosive atmospheres In Europe CENELEC the European Committee for Electrotechnical Standardization issues harmonized regulations rela ting to explosion protection for electrical equipment A hazard of explosion can arise when handling flammable meaning oxi dizable substances when these substances are present as gases e g me thane propane vapors mist or dust their concentration in a mixture with air is within a certain range and the quantity of the mixture flammable substance oxygen has reached a hazardous level An explosion would then occur if a suitable source of ignition is present During an explosion very high temperatures and high rates of pressure increase often re
39. uspended particles in the medium What is the size of the particles of the solid material and could they block the meter Are the pipelines clean and free of scraps left over from the installation such as shavings or weld splatter Is the tank clean and can any foreign material escape from of the tank and into the pipeline system s the type of medium changed often and is the system thoroughly rinsed after changing Has all air been completely bled from the pipes and the overall system Are the seals suitable for use with the medium to be measured compatible with the seals 2 Hydraulic properties of the system Note that the flow rate range is reduced at high viscosities Does the pump have enough power to operate the system LHLbbLbL Lieu 3 Electronic signal processing and electrical safety LLbbbiss Ld VSE measurement s the maximum operating pressure of the system smaller than the maximum permissible operating pressure of the flow meter s the maximum pressure drop Ap on the flow meter below the maximum permissible pressure drop When at the maximum flow rate at high viscosities for example is there an excessively large pressure drop Ap on the flow meter s the flow rate present within the flow rate range of the flow meter depending on the viscosity s the maximum temperature of the medium within the temperature range of the flow meter s the pipe cross section large enough and are there any large pressur
40. ver a synthetic fibre optic cable to a receiver unit located outside the difficult or hazardous area The receiver unit converts these light pulses to electrical pulses that can then be processed by the signal processor The signal fre quency of the output pulse is proportional to the speed of rotation of the gear and the flow rate The flow rate corresponds to the volume transfer red which is measured continuously by electronically counting the output pulses more general nature Certain properties of the devices depend in the type size and measurement range as well as on the fluid to be measured Please contact VSE for exact type and size specifications All flow meters are tested according to the applicable legally required EMC directives EN 50081 2 1994 and EN 50082 2 1995 VHM with fibre optic system flow meters are authorized for use in areas subject to an explosion hazard and fulfill the basic health and safety requirements relating to the design and construction of devices and protective systems according to Appendix II of Directive 94 9 EC Due to their fulfillment of the European standards EN 50014 and EN 50020 these devices fulfill the legal health and safety requirements and are certified by accredited certification agencies You will find an EC Type Examination Certificate on page 23 The label for EC conformity is the CE symbol which is placed on all flow meters s the medium dirty or is there contamination and s
41. w meters in the series VHM with fibre optic system from VSE must be stored so that they can be read at any time by the group of authorized personnel Chapters may not be taken out of these instructions at any time A missing operating instructions manual or missing pages in operating instructions must be replaced immediately VSE can supply you with new operating instructions or you can download the operating instructions from the Internet www vse flow com The operating instructions must be given to each subsequent user of this product Legal Information This document is not managed by the updating service ofthe VSE Volumentechnik GmbH Changes to this document may be made without notice The VSE Volumentechnik GmbH does not provide any implicit guarantees of commercial qualities and suitability for a specific pur pose If you open or modify the device or incorrectly connect the electrical circuits the explosion protection warranty is invalidated and therefore the guarantee of the VSE Volumentechnik GmbH for safe operation in potentially explosive areas is invalidated The VSE Volumentechnik GmbH is not liable in any way for personal injuries or damage to goods resulting from improper installation or improper operation of the flow meter Operating manual No E060064 E VSE measurement Flow meter function description Flow meters from the VSE Volumentechnik GmbH measure the volumetric flow of fluids using the
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