MVF Series Micro Flow Vortex Gas Flowmeter User's Manual
Contents
1. 0 Opton2none D Product version 1 If the gas type is oxygen be sure to specify oil free treatment 2 Flow and mounting directions Flow direction Horizontal left to right Flow direction Horizontal right to left Converter on top Converter on bottom Converter on top Converter on bottom OW direction Code 0 Code 2 Flow direction Vertical down to up Flow direction Vertical up to down Converter on left Converter on left Flow direction Flow direction Code 4 Chapter 2 NAMES AND FUNCTIONS OF PARTS E Body Converter Terminal housing cover Flow direction D uF sensor uF sensor lt Pipe connector wafer Vortex generator Display Used for the display of instantaneous flow rate integrated flow rate and alarm status and error of this device For details of the display refer to CH Display on next page Label Indicates model number range and pulse rate Check that they are the same as the specifications ordered Converter Calculates temperature and pressure correction etc Wiring connection port There are 2 wiring connection ports Used for connecting an electric wiring conduit or mounting the included waterproof gland Terminal block Used for wiring a power supply to the device for 4 20mAdc output inte grated pulse output and communications Gauge pressure sensor Detects pressure uF sensor Detects vortex frequency and temperature2. Pipe connector Wafer connection Pipes are connected by sandwiching the pipe connector between flanges Vortex generator Generates vortex Chapter 2 NAMES AND FUNCTIONS OF PARTS E Display CAUTION Q Before pressing the reset switch touch a metal surface such as the housing of the device to discharge static electricity Reset switch 7 segment display upper 7 segment display lower Station address setting switch Loader jack Communications parameters switch Reset switch Resets the integrated cumulative value To reset the integrated value press the switch for 3 seconds or more Upper 7 segment display Displays instantaneous flow rate Example S004 m h Lower 7 segment display Displays integrated flow rate Example MVFO50 ADDTT 0 ms MVF080 100 150 EEE m3 Station address setting switch Sets the station address for the device For setup details refer to gt MVF Series Communications Functions CP SP 1183E Communications parameters switch Sets the communications parameters for the device For setup details refer to gt MVF Series Communications Functions CP SP 1183E Loader jack For maintenance only Do not connect Chapter 3 INSTALLATION MOUNTING WIRING WARNING If this device is used with flammable gases such as natural gas propane or butane mount it on the upstream side of the safety shutoff valve When air gets in the pipe and an explosive mixture is prod
3. 167mm e f the inside diameter is too large it might cause leakage Chapter 3 INSTALLATION MOUNTING WIRING E Wiring CAUTION When connecting the load to the output terminals do not exceed the rated value shown in the specifications Doing to do so might cause the damage of this device Before wiring be sure to turn the power OFF Before supplying power be sure to check that there is no wiring error A wiring error might damage the device or cause a dangerous condition D Handling Precautions e Be sure to separate the communications wires from power lines which should not be laid in the same electrical conduit There are two wiring methods direct cable lead out and use of an electrical wiring conduit When installing the device outdoors be sure to use a conduit Tools required Phillips head screwdriver adjustable wrench spanner Procedure for direct cable lead out 1 Select a wiring connection port IO Handling Precautions e There are 2 wiring connection ports One port has a red cap and the other has a plug Decide whether to use one port or 2 ports depending on the number of cables or desired separation of signal wires 2 Remove the red cap from the wiring connection port When leading out the wiring from two ports remove the plug also 11 Chapter 3 INSTALLATION MOUNTING WIRING 3 Remove the terminal cover 5 Pass the cable through the waterproof gland and mount th
4. 21 lt Q lt 795 19 lt Q lt 795 17 lt Q lt 795 16 lt Q lt 795 19 8 lt Q lt 56 56 lt Q lt 282 282 lt Q lt 1710 0 02 0 03 0 04 0 05 1 lt 0 07 0 08 0 10 0 20 0 30 0 40 0 50 7 17 1 17 1 lt Q lt 29 29 lt Q lt 52 52 lt Q lt 1710 17 4 17 1 lt Q lt 29 29 lt Q lt 45 45 lt Q lt 1710 7 2 0 70 0 80 39 lt Q lt 1710 35 lt Q lt 1710 3 9 1 lt Q lt 1710 lt Q lt 1710 0 98 Chapter 5 SPECIFICATIONS E Tables for accuracy after temperature and pressure correction in air Unit of flow rate m3 h actual 23 C Accuracy differs according to operating pressure and flow rate range 1 Operating pressure range 0 0 1 MPa MVF__ _1SU_011_ MVFO0501SU_011_ _ MVFO801SU_011_ _ Operating Minimum pressure measurable Accuracy 4 8 RD 3 4 RD 7 4 lt Q lt 32 32 lt Q lt 74 74 lt Q lt 287 4 8 RD 3 3 RD Q Accuracy oa 4 8 RD 3 4 RD 11 0 lt Q lt 31 31 lt Q lt 110 110 lt Q lt 523 flow rate 7 4 lt Q lt 32 32 lt Q lt 74 74 lt Q lt 258 11 0 lt Q lt 31 31 lt Q lt 110 110 lt Q lt 570 4 7 RD 3 2 RD 0 03 i 4 11 0 lt Q lt 31 31 lt Q lt 110 110 lt Q lt 617 i 4 8 RD 3 3 RD 0 02 0 05 7 4 lt Q lt 32 32 lt Q lt 74 74 lt Q lt 322 4 6 RD 3 0 RD 0 1 7 7 4 lt Q lt 32 32 lt Q lt 74 74 lt Q lt 428 4 7 RD 3 1 RD 7 7 4 7 RD 3 2 RD 0 03 74 l 4 lt lt lt lt lt lt MVF1001SU_01
5. a sensor should make a spark due to lightning or other reasons the mix ture may explode inside the pipe The mass of this device is 7 to 23kg according to the model number Ensure to take complete precautions and care while handling for trans portation or installation For safe handling two or more persons are required while handling this device Accidental dropping of the device on the foot might cause injury Do not hold the device by the converter alone Doing so might damage the device or the pipe connector section may drop off Do not use this device or its installed pipes as a scaffolding Doing so might damage the device or the pipe or might cause physical injury Do not disassemble this device If it is disassembled when pressure remains in the pipes the device could be damaged or someone could be injured by flying parts CAUTION Be sure to use this device for a flow not exceeding 36m s the maximum measurable velocity To prevent excessive flow use a suitable means to control the supply pressure or use a throttle valve or the like to control the flowrate If the velocity exceeds the maximum measurable velocity both the flowrate display and the output voltage current may indicate considerably lower values than the actual flowrate Refer to the behav ior when the flowrate greatly exceeds the upper limit of flowrate range on page 6 If damage could result from the abnormal functioning of this device include ap
6. alarm Fi Temperature upper limit alarm Pressure lower limit alarm Flowrate upper limit alarm Temperature upper limit alarm Pressure lower limit alarm Pressure upper limit alarm FLT Flowrate upper limit alarm Pressure upper limit alarm BUS Temperature lower limit alarm Pressure upper limit alarm Flowrate upper limit alarm Temperature lower limit alarm Pressure upper limit alarm Ban Temperature upper limit alarm Pressure upper limit alarm Flowrate upper limit alarm Temperature upper limit alarm Pressure upper limit alarm Flowrate upper limit alarm Velocity 45m s or more Temperature lower limit alarm 15 C or lower Temperature upper limit alarm 60 C or more Pressure lower limit alarm 50kPa or lower Pressure upper limit alarm 0 1 MPa or more model with operating pressure range 0 0 1 MPa 0 3 MPa or more model with operating pressure range 0 0 3 MPa 1 0 MPa or more model with operating pressure range 0 1 0 MPa 16 Chapter 5 SPECIFICATIONS E Specifications GENEE MVF080 MVF 100 MVF 150 Applicable gas Air Nitrogen Argon Oxygen 1 Carbon dioxide natural gas LNG base Methane Propane Butane and other inert gases and mixed gases outside the explosion limit range 50A 2B 80A 3B 100A 4B 150A 6B Flowrate measurement at a pressure of 0 05 MPa 8 to 322 11 to 711 14 to 1095 24 to 2356 SR 8 to 535 12 to 1181 19 to 1819 40 to 3913 range at 23 C for air m3 h no
7. and care while handling for transportation or installation For safe handling two or more persons are required while handling this device Accidental dropping of the device on the foot might cause injury CAUTION Do not flush when the device is mounted in the pipe Doing so might cause damage due to entry of foreign matter and cause faulty operation or errors in measurement When connecting flanges tighten with the specified torque Otherwise gas could leak from the pipe causing injury D Handling Precautions e When connecting to piping be sure to check before installation that there is no inclination or displacement of the pipes Failure to do so might cause leakage or measurement error e Be sure to flush cleaning the inside of pipe before installation this device to eliminate any foreign matter which might exist inside the pipe e When installing pay special attention to the flow direction Example MVF100 Gasket a Flange a SYD 2 V g To mount this device sandwich it between two pipe flanges wafer mounting Note that spacers should be used to prevent displacement during mounting The use of spacers enables proper alignment of the piping and this device Be sure to use the spacers Chapter 3 INSTALLATION MOUNTING WIRING 10 Flange shape Flange connection Diameter of gasket Use a flange which can secure a large contacting area with a gasket Good example Bad e
8. crimp type terminal lugs applicable to M4 screw Be sure that the tightening torque of terminal screw is less than 0 8Nem Use the JIS C 3401 cables for control CVV etc of less than 2 2mm dia for the wiring except RS 485 communications However if there is a risk of power surge due to lightning on a signal line use a shielded cable Use the twisted pair shielded cables for the wiring of RS 485 communications Be sure to apply terminating resistors 1508 1 2W For communications of wiring details refer to gt MVE Series Communications Functions CP SP 1183E Chapter 4 TROUBLESHOOTING If there is a problem with this device refer to the table below E Nothing on display Make sure that the correct power voltage being applied and the polarity are correct Make sure that the electric wires are connected E Error message faulty operation When an error message is displayed contact Yamatake Corporation Repair at Yamatake is required Error Failure location Cause message Era Flow sensor Flow sensor error Temperature sensor The cause may be an error or burnout of the sensor for temperature detection Alternatively dust moisture or oil from the fluid may have adhered to the sensor Flow sensor There may be an error or burnout of the flow sensor or temperature Temperature sensor sensor Alternatively dust moisture or oil from the fluid may have adhered to the sensor Pressure sensor The cause may be an error or
9. lt 286 286 lt Q lt 9364 4 8 RD 3 3 RD 109 2 lt Q lt 182 182 lt Q lt 286 286 lt Q lt 10921 4 7 RD 3 2 RD 124 8 lt Q lt 208 208 lt Q lt 286 286 lt Q lt 4 6 RD 3 1 RD Q N CO Q O A NO CO A oth D O oR 1559 0260 260 lt 0 lt 286 286 0 Q min 3 0 RD 168 4 Q 2281 261 lt 0 lt 286 200 0 1085 A sch O1 ee 25 Chapter 5 SPECIFICATIONS E Pressure loss Pressure loss kPa Pressure loss kPa MVF050 MVF080 _ MVF100 _ MVF150 Primary pressure 0 01MPa Primary pressure 0 3MPa Pipe size 50A Pipe size 80A Pipe size 100A Pipe size 150A ANN TS o o Pressure loss kPa ND OO ARQON O O 0 5 EENEG 0 0 eem H 1 1 1 0 0 wem O 200 400 600 800 1000 1200 1400 1600 1800 2000 O 1000 2000 3000 4000 5000 6000 7000 Flow rate n h normal Flow rate n h normal Primary pressure 0 7MPa Primary pressure 0 9MPa Pressure loss kPa Flow rate nm h normal Flow rate mt h normal When the MVF is used for a gas other than air multiply by the appropriate specific gravity below 26 Specific gravity of each gas when air is 1 0 Example For the MVF 150 with a primary pressure of 0 9MPa and a flow rate of 6000m3 h normal the pressure loss of natural gas can be calculated as follows Using the graph for 0 9MPa primary pressure the pressure loss is 2kPa at a flow rate of 6000m3 h normal Multiplyi
10. omissions If you should find an error or omis sion please contact Yamatake Corporation In no event is Yamatake Corporation liable to anyone for any indirect special or consequential damages as a result of using this product 2005 Yamatake Corporation ALL RIGHTS RESERVED UF and Micro Flow are trademarks of Yamatake Corporation in Japan ES SAFETY PRECAUTIONS WW E About Icons The safety precautions described in this manual are indicated by various icons Please be sure you read and understand the icons and their meanings described below before reading the rest of the manual Safety precautions are intended to ensure the safe and correct use of this prod uct to prevent injury to the operator and others and to prevent damage to proper ty Be sure to observe these safety precautions WA R N N G Warnings are indicated when mishandling this product might result in death or serious injury CAUTI O N Cautions are indicated when mishandling this product A might result in minor injury to the user or only physical damage to the product E Examples Use caution when handling the product The indicated action is prohibited Be sure to follow the indicated instructions S S S WARNING If this device is used with flammable gases such as natural gas propane or butane mount it on the upstream side of the safety shutoff valve When air gets in the pipe and an explosive mixture is produced and if
11. or more 0 5s Output intervals of less than 1s duty ratio 50 Communication function 1 RS 485 interface Transmission line 3 wire system Communication distance 300m max Compatible with Yamatake s products EST CMC10G WEB100 Transmission speed 2400 4800 9600 19200bps Integrated value instantaneous value warning and settings can be recorded Communication function 2 Mini plug jack for PC Smart Loader connection used in servicing by the manufacturer Display Instantaneous flowrate LCD 6 digits Integrated flowrate LCD 8 digits 1____ _m h display first places of decimals gees m3 h Integrated flowrate 5 Im m3 without decimal point OVER Flowrate range over setting For maintenance Flow passage SUS304 UF sensor Silicon Gold etc O ring Type 4D Viton Display glass parts material Tempered glass Thickness 10mm Mounting direction flow direction Horizontal Vertical mounting Connection type Wiring connection port Connection port 2 locations Connection standard G1 2 female thread TTT Ke 2 waterprotgandeatached oossoo OO Sealing IP67 JIS C 0920 and IEC 60529 Water proof and dust proof structure on the assumption RS of outdoor installation Applicable standard EN61326 2 3 2006 LEES SECHER 23 1 Oxygen is possible only for a model with oil free treatment for the gas contacting parts 2 The normal shows a volumetric flowrate m3 h after correcting with 0 C 101 325 kPa For another condition see the
12. pipe section in upstream side and downstream side of the installation location Refer to the drawings below for the length of upstream pipe section D indicates the connecting port size Secure the length of more than 5D for the downstream pipe section Type of Installation Reducing pipe Enlarging pipe Pipe with 90 bend Pipe with single plane double 90 bend Pipe with three dimensional double 90 bend e If the oil water or dust is contained in a fluid install a device to remove them If the oil water or dust is contained in a fluid they might cause measurement error or faulty operation Note e Remove the water using a dryer so that it does not cause dew condensation in the pipe e Use an oil eliminating mist separator with the eliminating capability of resid ual oil density less than 0 01mg m Chapter 3 INSTALLATION MOUNTING WIRING e Do not install at a location receiving the influence of pulsating flow D Handling Precautions e Do not install this device at the location near the exit of compressor At the location near the exit of compressor the strong pulsating flow is caused and there might be a dispersing of iron powder depending on the compressor type there is a possibility of causing faulty operation Compressor Compressor screw type etc VF KE Filter Dryer Receiver MVF tank As shown in the above figure provide the devices eliminating the for eign matters such as oil w
13. 1181 Q min 4 9 RD 3 5 RD Q min 4 9 RD 3 5 RD 0 2 7 4 0 2 14 2 74 lt Q lt 32 32 lt Q lt 74 74 lt Q lt 641 14 2 lt Q lt 31 31 lt Q lt 110 110 lt Q lt lt 1461 D Sp Q min 4 7 RD 3 2 RD Di weg Q min 4 7 RD 3 2 RD 8 5 lt Q lt 32 32 lt Q lt 74 74 lt Q lt 854 18 9 lt Q lt 31 31 lt Q lt 110 110 lt Q lt 1886 MVF1003SU_011_ _ MVF1503SU_011_ _ flow rate Accuracy flow rate Accuracy Q min Q min 5 4 RD 4 1 RD 5 4 RD 4 1 RD 0 1 14 6 0 1 31 3 14 6 lt Q lt 39 39 lt Q lt 156 156 lt Q lt 1457 31 3 lt Q lt 57 57 lt Q lt 286 286 lt Q lt 3135 Q min 5 1 RD 3 7 RD 5 1 RD 3 7 RD 39 1 39 1 lt Q lt 65 65 lt Q lt 286 286 lt Q lt 3913 4 9 RD 3 5 RD 6 9 46 9 lt Q lt 78 78 lt Q lt 286 286 lt Q lt 4692 0 15 18 2 0 15 18 2 lt Q lt 39 39 lt Q lt 156 156 lt Q lt 1819 Q min 4 9 RD 3 5 RD 0 2 21 8 0 4 21 8 lt Q lt 39 39 lt Q lt 156 156 lt Q lt 2180 4 7 RD 3 2 RD 4 7 RD 3 2 RD 29 0 0 3 62 5 0 3 29 0 lt Q lt 48 48 lt Q lt 156 156 lt Q lt 2904 62 5 lt Q lt 104 104 lt Q lt 286 286 lt Q lt 6249 24 3 Operating pressure range 0 1 0 MPa MVF_ MVFO500SU_011_ _ Accuracy 8 5 lt Q lt 32 32 lt Q lt 74 Q min 4 9 RD flow rate Q min 3 8 RD 74 lt Q lt 854 3 5 RD 74 lt Q lt 1067 3 3 RD 0 3 0 5 O min Q min 3 2 RD Q min 3 1 RD Q min 3 0 RD Q min 3 0 RD Q min 3 0 RD 7420 2302 0 98 Accuracy 5 1 RD 3 8 RD
14. 1__ Accuracy Accuracy Q min 4 8 RD 3 4 RD 20 lt Q lt 57 57 lt Q lt 286 286 lt Q lt 1733 Se ie Q min 4 8 RD 3 3 RD NIR Sau 4 8 RD 133 RD 13 7 lt Q lt 39 39 lt Q lt 156 156 lt Q lt 878 20 lt Q lt 57 57 lt Q lt 286 286 lt Q lt 1889 flow rate flow rate Q min Q min D I ER Q min 4 8 RD 3 4 RD D I l i 13 7 lt Q lt 39 39 lt Q lt 156 156 lt Q 805 13 7 20 4 13 7 lt Q lt 39 39 lt Q lt 156 156 lt Q lt 905 20 4 lt Q lt 57 57 lt Q lt 286 286 lt Q lt Q min 4 7 RD 3 1 RD Q min 4 7 RD 3 1 RD 0 05 13 7 0 05 23 6 13 7 lt Q lt 39 39 lt Q lt 156 1156 lt Q lt 1095 23 6 lt Q lt 57 57 lt Q lt 286 286 lt Q lt 2356 Q min 4 6 RD 3 0 RD Q min 4 6 RD 3 0 RD 0 1 14 6 0 1 31 3 14 6 lt Q lt 39 39 lt Q lt 156 1156 lt Q lt 1457 31 3 lt Q lt 57 57 lt Q lt 286 286 lt Q lt 3135 Q min 4 7 RD 3 2 RD Q min 4 7 RD 3 2 RD 0 03 0 03 N O E O1 23 Chapter 5 SPECIFICATIONS 2 Operating pressure range 0 0 3 MPa MVF__ _3SU_011_ _ MVFO503SU_011_ _ MVFO803SU_011_ _ ini Operating Minimum pressure measurable Accuracy Accuracy flow rate flow rate Q min Q min 5 4 RD 4 1 RD 0 1 7 4 0 1 74 lt Q lt 32 32 lt Q lt 74 74 lt Q lt 428 Hi Q min 5 4 RD 4 1 RD 11 0 lt Q lt 31 31 lt Q lt 110 110 lt Q lt 946 Q min 5 1 RD 3 7 RD Q min 5 1 RD 3 7 RD 0 15 7 4 0 15 11 8 74 lt Q lt 32 32 lt Q lt 74 74 lt Q lt 535 11 8 lt Q lt 31 31 lt Q lt 110 110 lt Q lt
15. 3 h and 150m h normal using the following formula ke volumetric flow 2 temperature 2 pressure 2 RD rate accuracy CORDES accuracy oS accuracy RD Accuracy after correction Temperature and pressure sensor accuracy is as follows Temperature measurement accuracy 2 RD absolute temperature base Pressure accuracy RD upper limit of operating pressure range MPa x pres sure measurement accuracy FS 100 fluid pressure MPa 0 1013 MPa In this case the pressure measurement accuracy is 1 FS in the 0 1MPa range of the MVFO800SU_011_ _ 00 operating pressure range 0 1 0 MPa In order to calculate the volumetric flow rate accuracy the Reynolds number is first calculated from the mass flow rate m2 h normal The steps of the calculation are mass flow rate gt volumetric flow rate gt velocity gt the Reynolds number Mass flow rate gt volumetric flow rate calculation Qactual m3 h 100 x 273 23 273 0 x 101 3 101 3 700 13 7 19 Chapter 5 SPECIFICATIONS 20 Volumetric flow rate gt Velocity calculation Velocity V m s Qactual m h S 3600 13 7 78 x 1073 x x 4 3600 0 8 S flow path cross section of MVF080 m2 78 x 1073 x 2 4 Velocity gt Re calculation Re V x D v 0 8 x 78 x 1073 1 883 x 10 33139 V velocity m s 0 8 D internal diameter of the MVF body m for MVF080 D 78mm v kinetic viscosity of fluid m2 s For dry air 23
16. C and 700kPa v 1 883 x 10 6m2 s Volumetric flow rate accuracy is checked by the Reynolds number With Re 33139 flow rate 0 8m s since the velocity is 0 5m s or more and the Reynolds number is in the 10000 35000 range the volumetric flow rate accuracy is 4 RD CF7 Specifying volumetric flow rate accuracy below Volumetric flow rate accuracy 4 RD Temperature accuracy 2 RD Pressure accuracy 1 MPa x 1 FS 100 fluid pressure MPa 0 1013 MPa 0 01 0 7 0 1013 1 2 RD In this case the pressure measurement accuracy is 1 ES in the 0 1MPa range of the MVFO800SU_011_ _ 00 operating pressure range 0 1 0 MPa Based on these conditions The accuracy after tem _ 2 2 D _ poe pee arin y 4 2 2 2 1 2 2 4 6 RD At 100m h normal the accuracy is 4 6 RD The calculation for the flow rate of 150m3 h normal is performed similarly Re 49517 velocity 1 2m s Since the Reynolds number is more than 35000 the volumetric flow rate accuracy is 2 RD CF7 Specifying volumetric flow rate accuracy below Volumetric flow rate accuracy 2 RD Temperature accuracy 2 RD Pressure accuracy 1 MPa x 1 FS 100 fluid pressure MPa 0 1013 MPa 0 01 0 7 0 1013 1 2 RD Based on these conditions The accuracy after tem _ VOX 2 2 1 2 8 perature correction V 2 2 1 2 3 19 RD At 150m h normal the accuracy is 3 1 RD Chapter 1 INTRODUCT
17. CTION E Model selection table The following shows the model Nos for this flowmeter size ka on method a nication e difection Micro Fow VonexFiowmeter PB EEE EEE L n 2080 ECE CE Pipe size 80A 8B BECHER oN D A ER RS D AE EE S __ Pipesize 150A GB With Se ond pressure correction JL Keiser With temperature and pressure correction operating pressure range 0 0 1 MPa With temperature and pressure correction operating pressure range 0 0 3 MPa With temperature correction and pressure no correction operating pressure range hi 1 0 MPa Material SUS304 Ooo S at JAir Nitrogen Algon Oxygen Be sure to specify code 1 in the FREE Pe opiton 1 gas contacting parts treated to be oil free 1 Carbondioxide S Carbondioxide RS EE M a Natural gas LNG base Methane Pl IT TI Prop S BIL Butane y 4to 20mAde output Integration pulse output Ooo o Power 24e O RS 485 Communication EST WEB100 Horizontal Flow direction left to right S o Horizodntal Flow direction left to right Converter on bottom 2 2 Ft 3 Horizontal Flow direction right to left Converter on top 2 i 3 Horizontal Flow direction right to left Converter on bottom 2 A Vertical Flow direction down to up Converter on left 2 gt A l Vertical Flow direction up to down Converter on left 2 SSES Gas contacting parts treated to be oil free rt Necessary if gas type is oxygen 1
18. ION Specifying volumetric flow rate accuracy The volumetric flow rate accuracy is specified as follows e MVEF50 pipe size 50A Qmin minimum measurable flow rate when velocity is 0 5 m s or less or the Reynolds number is 15000 or less 4 RD when velocity is 0 5m s or more and the Reynolds number is from 15000 to 35000 2 RD when the Reynolds number is 35000 or more e MVF80 pipe size 80A Qmin minimum measurable flow rate when velocity is 0 5 m s or less or the Reynolds number is 10000 or less 4 RD when velocity is 0 5m s or more and the Reynolds number is from 10000 to 35000 2 RD when the Reynolds number is 35000 or more e MVF100 pipe size 100A Qmin minimum measurable flow rate when velocity is 0 5 m s or less or the Reynolds number is 10000 or less 4 RD when velocity is 0 5m s or more and the Reynolds number is from 10000 to 40000 2 RD when the Reynolds number is 40000 or more e MVF150 pipe size 150A Qmin minimum measurable flow rate when velocity is 0 5 m s or less or the Reynolds number is 10000 or less 4 RD when velocity is 0 5m s or more and the Reynolds number is from 10000 to 50000 2 RD when the Reynolds number is 50000 or more 21 Chapter 5 SPECIFICATIONS E Tables for specifying volumetric flow rate accuracy in air Unit of flow rate m3 h actual 23 C Accuracy differs according to operating pressure and flow rate ranges MVFO050 Pipe si
19. No CP SP 1190E MVF Series Micro Flow Vortex Gas Flowmeter User s Manual Thank you for purchasing an MVF Series flowmeter This manual contains information for ensuring the correct use of the MVF Series flowmeter It also provides nec essary information for installation maintenance and troubleshooting This manual should be read by those who design and maintain equipment that uses the MVF Series flowmeter Be sure to keep this manual nearby for handy reference Yamatake Corporation RESTRICTIONS ON USE This product has been designed developed and manufactured for general purpose application in machinery and equipment Accordingly when used in applications outlined below special care should be taken to implement a fail safe and or redundant design concept as well as a periodic maintenance program e Safety devices for plant worker protection e Start stop control devices for transportation and material handling machines e Aeronautical aerospace machines e Control devices for nuclear reactors Never use this product in applications where human safety may be put at risk NOTICE Be sure that the user receives this manual before the product is used Copying or duplicating this user s manual in part or in whole is forbid den The information and specifications in this manual are subject to change without notice Considerable effort has been made to ensure that this manual is free from inaccuracies and
20. an be calculated as Qactual m3 h S x V x 3600 5 2 S flow path cross section of MVF080 m2 78 x 1073 x 2 4 V velocity m s 0 3 Therefore volumetric flow rate can be measured down to 5 2m h Next we can calculate the minimum mass flow rate Qnormal m h normal at 0 C and pressure of 101 3kPa with temperature and pressure correction Qnormal m3 h normal 5 2 x 273 0 273 23 x 101 3 700 101 3 38 Amount of temperature Amount of pressure correction correction Therefore mass flow rate can be measured starting from a minimum of 38m h normal 2 Maximum measurable flow rate volumetric flow rate m3 h and mass flow rate m3 h normal MVF flowmeters can measure velocity up to 30m s The volumetric flow rate Qactual m h at velocity 30m s is determined by Qactual m3 h S x V x 3600 516 S flow path cross section of MVF080 m2 78 x 1073 x 2 4 V velocity m s 30 The volumetric flow rate can be measured up to 516m3 h Next we can calculate the mass flow rate at 0 C and pressure of 101 3kPa with temperature and pressure correction by Qnormal m3 h normal 516 x 273 0 273 23 x 101 3 700 101 3 3765 Amount of temperature Amount of pressure correction correction Mass flow rate can be measured up to 3765m3 h normal 3 Accuracy after temperature and pressure correction As an example we will calculate the accuracy after temperature and pressure cor rection at 100m
21. ater and iron powder and install a receiver tank as the measures against pulsating flow at the upstream of MVF series e Take effective countermeasures in case of installation near a pump or roots blower If this device is installed near a pump or roots blower it may be affected by a pulsating flow Install a volume tank or pulsation damping device muffler between the pump or roots blower and this device to suppress the influence of pulsation as much as possible elf the device is installed downstream of branched piping it may detect reverse flow rate Be sure to take countermeasures as illustrated below Example In this application Line A is operating but B is stopped Although the flow rate of B is essentially zero as detected by the MVF in B the MVF might count and integrate a false flow rate caused by the influence of the flow in Line A Due to the influence of flow in Line A a ee flow is detected in B Flow path Line A operating Line B stopped Countermeasure 1 Install a valve on the upstream side of the MVFs if there is an unused line to eliminate the influence of flow in the other line Line A Line B Countermeasure 2 Design the system so that other devices do not receive the output 4 to 20mA or pulse from the MVF on the unused line Chapter 3 INSTALLATION MOUNTING WIRING E Piping work WARNING The mass of this device is 7 to 23kg according to the model number Ensure to take complete precautions
22. burnout of the pressure compensating sensor Flow sensor The cause may be an error or burnout of the flow sensor or pressure Pressure sensor sensor Alternatively dust moisture or oil from the fluid may have adhered to the sensor Pressure sensor pressure sensor Alternatively dust moisture or oil from the fluid may have adhered to the sensor Flow sensor The cause may be an error or burnout of the flow sensor temperature Temperature sensor sensor or pressure sensor Alternatively dust moisture or oil from the Pressure sensor fluid may have adhered to the sensor EEPROM The cause may be an error in the nonvolatile memory used by the internal microcomputer ww Temperature sensor The cause may be an error or burnout of the temperature sensor or 15 Chapter 4 TROUBLESHOOTING E Alarm display If conditions exceed the device s specified range an alarm message and the instan taneous flowrate are displayed alternately In order to use this device within an allowable range change the conditions of the fluid display Adi Flowrate upper limit alarm o G2 Temperature lower limit alarm S BE Flowrate upper limit alarm Temperature lower limit alarm BL Temperature upper limit alarm o BE Flowrate upper limit alarm Temperature upper limit alarm BL Pressure upper limit alarm 404 Flowrate upper limit alarm Pressure lower limitalarm Flowrate upper limit alarm Temperature lower limit alarm Pressure lower limit
23. cal length internal diameter of the MVF body m MVFO50 52 5mm MVFO80 78mm MVF100 96 8mm MVF150 142mm v Kinetic viscosity of the fluid m2 s v u p For instance in the case of air dry air at 0 C and 101 3kPa Viscosity u 17 24 x 10 Pa s Density p 1 293kg m gt From these conditions the kinetic viscosity v 13 35 x 1076 m2 s Also in the case of air dry air at 23 C and 700kPa v 1 883 x 10 m s As acalculation example we will use the following conditions Installed flowmeter MVFO800SUN011_ _00 operating pressure range 0 1 0 MPa Fluid air dry air Operating pressure 700kPa Fluid temperature 23 C Atmospheric pressure 101 3kPa We will calculate the following items 1 Minimum measurable flow rate 2 Maximum measurable flow rate 3 Accuracy after temperature and pressure correction examples for 100 and 150m h normal 1 Minimum measurable flow rate volumetric flow rate m3 h and mass flow rate m3 h normal 18 First the minimum measurable velocity is determined as the larger of 0 3m s or the velocity at Re 3500 The velocity at Re 3500 is calculated from the formula for cal culating Re V Rexv D Here if Re 3500 v 1 883 x 10 6m2 s and D 78 x 10 3m V 3500 x 1 883 x 10 78 x 10 3 0 08m s Since a velocity of 0 08m s at Re 3500 is less than 0 3m s the minimum measur able velocity is 0 3m s Chapter 5 SPECIFICATIONS Now the minimum measurable volumetric flow rate c
24. de a sunshade Doing so might cause faulty operation E Behavior when the flowrate greatly exceeds the upper limit of flowrate If the actual velocity exceeds the maximum measurable velocity of 36m s the flowrate display will stop increasing in proportion to the flowrate Be sure to use this device within the maximum measurable velocity If the velocity exceeds 50 m s the flowrate display will begin to decrease giving the appearance that the flowrate is within the flowrate range limits Also if there is a sudden greatly excessive velocity 50 m s or more for a very short period the flowrate display will continue to indicate flow within the flowrate range without indicating the spike Especially when this device is used for flow control make sure to take appropriate measures such as controlling the supply pressure or using a throttle valve so that even at maximum control output the flowrate does not exceed 36m s Measurable velocity range Flowrate display 36m s 50m s Actual velocity Upper limit E Precautions for piping installation When this device is installed be sure to provide the bypass piping as shown below Also for the valves before and after this device use a ball valve like as having the structure which does not disturb the gas flow Bypass piping valve Eth I I DE Upstream side valve MVF Downstream side valve Chapter 3 INSTALLATION MOUNTING WIRING e Provide a straight
25. e device is mounted in the pipe Doing so might cause damage due to entry of foreign matter and cause faulty operation or errors in measurement Q Before wiring be sure to turn the power OFF Before supplying power be sure to check that there is no wiring error A Q wiring error might damage the device or cause a dangerous condition Do not use this device outside of the operating pressure range Also S do not subject this device to a pressure above the pressure resistance Doing so might damage this device iil Organization of This User s Manual This manual is organized as follows Chapter 1 Chapter 2 Chapter 3 Chapter 4 Chapter 5 INTRODUCTION This chapter describes features on this device NAMES AND FUNCTIONS OF PARTS This chapter describes the NAMES AND FUNCTIONS OF PARTS on this device INSTALLATION MOUNTING WIRING This chapter describes installation mounting and wiring on this device TROUBLESHOOTING This chapter describes how to investigate and remedy trouble that may occur dur ing operation of this device SPECIFICATIONS This chapter describes the specifications and external dimensions of this device Conventions Used in This Manual The following conventions are used in this manual C Handling Precautions Handling Precautions indicate items that the user should pay attention to when handling the MVF Series Note Notes indicate information that might benefit the
26. e waterproof gland in the wiring connection port IO Handling Precautions e Never remove the packing from the waterproof gland e Use a cable that is 6 to 12mm in diameter 6 Connect the wiring to the terminal block 7 Put the terminal cover back in place Procedure for using an electrical wiring conduit The wiring connection port thread is G1 2 1 Select a wiring connection port IO Handling Precautions e There are 2 wiring connection ports One port has a red cap and the other has a plug Decide whether to use one port or 2 ports depending on the number of cables or desired separation of signal wires 12 Chapter 3 INSTALLATION MOUNTING WIRING 2 Remove the red cap from the wiring connection port 3 When leading out the wiring from two ports remove the plug also 4 Remove the terminal cover 5 Connect an electrical wiring conduit 6 Pass the wiring through the electrical wiring conduit and then connect the wiring to the terminal block 7 Put the terminal cover back in place Wiring connection example External wiring connection em pm rm rem pm rem rem rem rem pe pm zech I C A terminating resistor is not attached l 24Vdc power supply Pulse output wiring example 1 No voltage input type Input Counter 4 to 20mA 6 OV Pulse output 2 Voltage input type ____ A Pull up resistor DC power supp
27. flow rate 43 5 Q min 29 0 lt Q lt 48 48 lt Q lt 156 156 lt Q lt 2904 Q min 3 5 RD 36 3 lt Q lt 60 60 lt Q lt 156 156 lt Q lt 3628 Q min 3 3 RD 43 5 lt Q lt 73 73 lt Q lt 156 156 lt Q lt 4351 Q min 3 2 RD 50 7 lt Q lt 85 85 lt Q lt 156 156 lt Q lt 5705 Q min 4 6 RD 3 1 RD 0 7 58 oe Q min 4 6 RD 3 1 RD 65 2 lt Q lt 109 109 lt Q lt 156 156 lt Q lt 6522 Q min 4 6 RD 3 0 RD 72 5 lt sQ lt 121 121 lt Q lt 156 1156 lt Q lt 7246 Q min 4 6 RD 3 0 RD 78 2 78 2 lt Q lt 130 180 lt Q lt 156 156 lt Q lt 782 72 5 Chapter 5 SPECIFICATIONS __OSU_011_ MVFO800SU_011__ e 5 0 98 Accuracy flow rate Q min 3 8 RD lt 1886 3 5 RD 110 lt Q lt 2355 3 3 RD 110 lt Q lt 2825 4 7 RD 3 2 RD 33 0 lt Q 55 55 lt Q lt 110 110 lt Q lt 3295 os Le 4 6 RD 3 1 RD 739 0251 31 lt 0 lt 110 11020 lo ae 23 6 28 3 33 0 37 6 37 6 lt Q lt 63 68 lt Q lt 110 110 lt Q 3765 IW 4 6 RD 3 1 RD i 43 0 lt Q lt 71 71 lt Q lt 110 110 lt Q 4235 _ 4 6 RD 3 0 RD i 48 0 lt Q lt 78 78 lt Q lt 110 110 lt Q lt 4705 Q min 4 6 RD 3 0 RD 51 0 lt Q lt 85 85 lt Q lt 110 1110 lt Q lt 5081 51 0 Accuracy Q min 5 6 RD 4 4 RD 62 5 62 5 lt Q lt 104 104 lt Q lt 286 1286 lt Q lt 6249 SE Q min 5 1 RD 3 8 RD 178 1 lt Q lt 130 130 lt Q lt 286 286 lt Q lt Q min 4 9 RD 3 5 RD 93 6 93 6 lt Q lt 156 156 lt Q
28. ly 30V max l l l l RS 485 communications i D Handling Precautions Connect COM of 4 20mA output directly from the terminal block Do not use the COM of power supply terminal 4 20mA and the COM of pulse output terminal as a common power supply terminal for external devices Be sure that the pulse output never exceeds the output rating of this device When driving a relay use a relay with a built in diode for coil surge absorption Failure to do so may cause faulty operation This device becomes a warm up mode for about 13 seconds after power on During the warm up period calculation and outputs are as follow e Display does not display a flowrate Demonstration only e Accumulative operation no operation e Analog output outputs current over 20 mA during 200 300 ms peri od Then an instantaneous flowrate will be output e Pulse output no outputs e Communication no operation 13 Chapter 3 INSTALLATION MOUNTING WIRING 14 Terminal layout Wiring label l COM 24V SG 4 Terminal Signal Description name D A S 485 communication DA S 485 communication DB o not use o not use ulse output NPN open collector mmon S 485 communication common 4V power ommon to 20mA output round terminal Q FIO D Handling Precautions Connect each terminal securely using crimp type terminal lugs to ensure firm contact area Use
29. measurement range Volumetric flow rateaccuracy added to 23 C for air Volumetric flow rate accuracy Accuracy after temperature and pressure compensation changed 19 Pressure accuracy RD added to 0 1013 MPa 21 M Tables for specifying volumetric flow rate accuracy in air changed 22 M Tables for accuracy after temperature and pressure compensation in air changed Apr 2008 Two models with different operating pressure range added Overall revised 4th ed 5th JP ed azbil Yam at ake Corporation Specifications are subject to change without notice 08 Advanced Automation Company 1 12 2 Kawana Fujisawa Kanagawa 251 8522 Japan URL http www azbil com 1st Edition Issued in Sep 2005 W 4th Edition Issued in Apr 2008 M
30. ng the pressure loss of air by the specific gravity of natural gas of 0 64 the pressure loss is obtained 2kPa x 0 64 1 28kPa MH External dimensions Unit mm MVFO050 Pipe size 50A Chapter 5 SPECIFICATIONS 27 Chapter 5 SPECIFICATIONS MVF100 Pipe size 100A 28 Revision History date CP SP 1190E 1stEdition TI Feb 2006 Warning about disassembling added to WARNING section Order of CAUTION items changed System section Integrated pulse output changed to Pulse output Rotary switch changed to Station address setting switch DIP switch changed to Communications parameters switch Warning about disassembling added to WARNING section Caution about vibration added to CAUTION section Description of Note removed Description of mounting method added Flange shape item moved from page 10 10 Mounting the gasket moved from page 9 Subject changed to Dimensions of gasket 11 to 14 Description of Wiring section completely changed Old pages are 11 to 13 15 16 Old pages are 14 and 15 17 Contact rating changed to Absolute maximum rating Pulse width added to pulse output Old page is 16 18 One atmospheric pressure changed to 101 3kPa Old page is 17 19 to 26 Old pages are 18 to 25 June 2007 Wiring connection example changed WE Specifications Flowrate
31. ppropriate redundancy in the system design Prevent foreign matter from entering the device If the rust water droplet oil mist or dust in the piping flows into the device measurement error might occur and result in damaging the device If there is a possibility that any foreign matter flows into the device provide a filter strainer or mist trap capable of eliminating more than 1um foreign matter at the upstream and periodically inspect and replace the filter This device is a precision instrument Do not drop it nor subject it to shock Doing so might damage the device When mounting the device firmly fasten to prevent vibration Chapter 3 INSTALLATION MOUNTING WIRING MH Installation Avoid mounting this device in the following locations Locations whose ambient temperature falls below 15 C and rises above 60 C Locations whose ambient humidity exceeds 90 RH Locations subject to sudden changes in temperature and condensation Locations be filled with corrosive gases and flammable gases Locations where there are lots of conductive substances e g dust salt or iron dust or organic solvents Locations subject to vibration or shock Locations subject to splashing by fluids e g oil chemicals Locations where strong magnetic or electrical fields are generated D Handling Precautions e Although this device can be installed outdoors if it is installed at the loca tions subject to direct sunlight be sure to provi
32. propriate redundancy in the system design Be sure that the operating gas temperature does not fall below 15 C Using the gas below 15 C the O ring might crack and cause gas leak age il CAUTION Prevent foreign matter from entering the device Q If the rust water droplet oil mist or dust in the piping flows into the device measurement error might occur and result in damaging the device If there is a possibility that any foreign matter flows into the device provide a filter strainer or mist trap capable of eliminating more than 1pm foreign matter at the upstream and periodically inspect and replace the filter O If this device is used for monitoring flowrate of the burner consider the piping instrumentation lest the backfire damage this device Q When connecting the load to the output terminals do not exceed the rated value shown in the specifications Doing so might cause the damage of this device This device is a precision instrument Do not drop it or subject it to S shock Doing so might damage the device When connecting flanges tighten with the specified torque Q Otherwise gas could leak from the pipe causing injury Q When mounting the device firmly fasten to prevent vibration Do not peel off the pipe connector port seals until immediately before S you connect the piping Doing so might allow foreign objects to enter the connector port and cause defective operation S Do not flush when th
33. rmal 2 13 to 1280 29 to 2826 44 to 4352 94 to 9364 Volumetric flowrate accuracy 2 RD at 2 RD at 2 RD at 2 RD at at 23 C and pressure of 0 01 MPa 73m h normal 109m h normal 154m3 h normal 282m h normal for air 3 or more or more or more or more Accuracy after temperature and 3 3 RD at 3 3 RD at 3 3 RD at 3 3 RD at pressure correction 74m h normal 110m h normal 156m3 h normal 286m h normal at a pressure of 0 5 MPa 4 or more or more or more or more Operating pressure range 0 0 to 0 1 MPa 42 FS at 23 C for MVF__ _1SU_011_ _00 Accuracy of pressure sensor 0 to 0 3 MPa 2 FS at 23 C for MVF__ _3SU_011_ _00 0 to 1 0 MPa 2 FS at 23 C for MVF__ _O0SU_011_ _00 15 MPa forMVF___1SU_011_ _00 45 MPa forMVF__ _3SU_011__00 1 5 MPa for MVF OSU_011_ _00 Operating temperature range 15 to 60 C 2 RD absolute temperature base Accuracy of temperature sensor Operating humidity range 10 to 90 RH No condensation allowed Flow rate calculation 100ms output updating cycle Pressure resistance O Rated power supply 4Vdc Current consumption 00mA max Output signal 1 point Instantaneous flowrate output 4 to 2OmAdc Allowable load resistance 6002 max Maximum Current value 23 2mA Integrated pulse output 1 point Open collector output Absolute maximum rating 30Vdc 20mA max Pulse weight MVFO50 0 01 0 1 1 10 MVF080 100 150 0 1 1 10 100 Pulse width Output intervals of 1s
34. table for accuracy after temperature and pressure correction in air 3 The volumetric flowrate accuracy differs with an operating pressure and a flowrate range For details the table for specifying volumetric flowarte accuracy in air 4 The data is an example of the MVF__ _OSU_011_ _00 with the pressure sensor of 0 1 0 MPa For another models see the table for accuracy after temperature and pressure correction in air And using a gauge pressure sensor atmospheric pressure fluctuation is not included 5 The integrated flowrate display becomes 00000000 after counting up to 99999999 For details about setup refer to the MVF series communications functions CP SP 1183E Convertor material Aluminum alloy ADC 12 Convertor coating Acrylic resin corrosion resistant coating Coating color Light beige 1 Chapter 5 SPECIFICATIONS E Specifying accuracy Velocity of measurable specifying accuracy From the large one which the velocity at Re 3500 or 0 3 m s to the velocity of 30 m s Minimum measurable velocity The large one which the velocity at Re 3500 or 0 3 m s Maximum measurable velocity 36 m s See the tables for specifying accuracy on pages 22 and following The accuracy tables show the ranges when the gas is air To convert to other application condi tions calculate as shown below The Reynolds number Re used below is calculated using the formula Re V x D v V velocity m s D typi
35. uced and if a sensor should make a spark due to lightning or other reasons the mixture may explode inside the pipe The mass of this device is 7 to 23kg according to the model number Ensure to take complete precautions and care while handling for transportation or installation For safe handling two or more persons are required while handling this device Accidental dropping of the device on the foot might cause injury Do not hold the device by the converter alone Doing so might damage the device or the pipe connector section may drop off Do not use this device or its installed pipes as a scaffolding Doing so might damage the device or the pipe or might cause physical injury Do not disassemble this device If it is disassembled when pressure remains in the pipes the device could be damaged or someone could be injured by flying parts CAUTION Be sure to use this device for a flow not exceeding 36m s the maximum measurable velocity To prevent excessive flow use a suitable means to control the supply pressure or use a throttle valve or the like to control the flowrate If the velocity exceeds the maximum measurable velocity both the flowrate display and the output voltage current may indicate considerably lower values than the actual flowrate Refer to the behavior when the flowrate greatly exceeds the upper limit of flowrate range on page 6 If damage could result from the abnormal functioning of this device include a
36. us flow rate The MVF Series Micro Flow Vortex Gas Flowmeter hereafter called the device or the MVF is a thermal vortex gas flowmeter featuring a wide measurement range It uses the Yamatake designed Micro Flow sensor or uF sensor as a vor tex generator e 35 more of the MVF s component materials are available for re use or recy cling as compared with the conventional CMK model e Temperature and pressure compensation functions are integrated into the MVF Since expensive temperature and pressure compensation devices are not required a large cost reduction can be expected e This device incorporates a uF Micro Flow sensor a mere 1 7mm square and 0 5mm thick made possible by silicon micro machining and thin film technolo gies By using this high sensitivity high speed sensor to detect vortex frequen cy measurement rangeability of 100 1 has been achieved e The entire MVF is provided with wide range of functions to meet various appli cations needs LCD display function analog output 4 to 20mA integrating calculation display and integral pulse output open collector Also an RS 485 communications function is provided as a standard feature so a large amount of instrumentation cost reduction can be achieved when data is uploaded Pulse counter PCG13 Personal computer etc CMC10L RS 232C Smart terminal _EST Z series PLC i output P Controller SDC series etc Chapter 1 INTRODU
37. user gt This indicates the item or page that the user is requested to refer to 1 2 3 Numbers within parentheses indicate steps in a sequence or parts of an explanation HE This indicates 7 segment indication on the display 1V Contents SAFETY PRECAUTIONS Organization of This User s Manual Conventions Used in This Manual Chapter 1 Chapter 2 Chapter 3 Chapter 4 Chapter 5 INTRODUCTION PROC LE CE el 205s 64 6 6 so 6 6b eo oo ow sO er oe a eo eee eee Case ewes 1 Feature sun ss esse doses EEEF NA EE er E 1 System EE 1 Model selection table ss ss soso 2 NAMES AND FUNCTIONS OF PARTS INSTALLATION MOUNTING WIRING DS AO ssns TENENS TONNEN DEONT ERREIAN ENN 6 Precautions for piping installation 6 Piping work ee 9 Wiring css secs 11 TROUBLESHOOTING Nothing ON IS DAV en done du nome cvs 15 Error message faulty operation 15 Alarm display 16 SPECIFICATIONS Specifications EE 17 Specifying KIT EE 18 Tables for specifying volumetric flow rate accuracy in air 22 Tables for accuracy after temperature and pressure compensation IN Air sees ENEE KEEN ENNEN estaas 23 PRESSING JOSS 46086 oo550cceves ec de IEPENER EEANN ERN 26 External dimensions A ge ENEE Usure semences 27 Chapter1 INTRODUCTION E Introduction E Features E System 4 to 20mA instantaneo
38. xample a Flange Welded portion gasket gt As the contacting area with a gasket is small there is a fear of leakage Tighten the flange with bolts Tightening torque differs by pipe size Tighten at a torque that is within the range specified in the table below Torque Unit Ne m kgf e cm 37 to 47 378 to 480 26 to 36 265 to 367 The value in parentheses 100A 32 to 42 327 to 429 150A 64 to 74 653 to 755 DH Handling Precautions indicates the reference value e Tighten bolts so that they are uniformly tightened If leakage does not stop after tightening bolts gradually tighten the bolts more a little at a time e Tighten bolts within the specified tightening torque Otherwise the bolts may be damaged e Do not forcibly insert into the narrow space between the flange faces Doing so might cause leakage or damage e Six of the 8 bolts on MVF080 100 150 models require the use of a spacer to ensure that the are correctly aligned around the pipe connection unit wafer and that they match up properly with the holes in the pipe flanges A gasket is required for flange connection Refer to the table below for the inside diameter of gasket Pipe size Inside diameter of gasket Reference value Sr A 50 D Handling Precautions e f the inside diameter of the gasket is too small it might disturb the flow straightening condition inside of this device and cause inaccuracies 90mm 115mm
39. ze 50A Operating Minimum Accuracy pressure measurable flow rate Q min 4 RD 2 RD Q min 0 01 7 3 lt Q lt 31 31 lt Q lt 73 73 lt Q lt 234 0 02 29 lt Q lt 67 67 lt Q lt 234 0 03 97 lt Q lt 62 62 lt Q lt 234 0 05 lt 54 5 4 lt Q lt 23 23 lt Q lt 54 54 lt Q lt 234 5 lt Q lt 29 20297 0 04 5 8 lt Q lt 25 25 lt Q lt 58 58 lt Q lt 234 50 5 0 lt Q 22 22 lt Q lt 50 50 lt Q lt 234 lt Q 20 0 07 0 08 SS 3 7 2 8 4 Q Si 5 KR Q S 3 A oO 3 mS 3 3 3 0 10 0 20 0 30 0 40 0 50 4 5 lt Qs19 19 lt Q lt 45 45 lt Q lt 234 Q a 0 70 0 80 0 98 MVF100 Pipe size 100A Operating Minimum Accuracy pressure measurable flow rate Q min Q min 4 RD 2 RD 0 01 MVF Operating ae ae CR CR MVF Operating pressure 0 01 080 Pipe size 80A Minimum Accuracy flow rate 4 RD 2 RD Q min 150 Pipe size 150A EE SS ag Minimum Accuracy measurable flow rate Q min 4 RD 2 RD Q min 0 02 0 03 0 04 0 05 0 07 0 08 8 3 lt Q lt 24 24 lt Q lt 95 7 9 lt Q lt 22 22 lt Q lt 90 0 10 0 20 0 30 0 40 0 50 7 9 7 9 Q lt 14 14 lt Q lt 57 0 70 0 80 22 95 lt Q lt 795 90 lt Q lt 795 79 79 Q lt 21 21 lt Q lt 85 85 lt Q lt 795 57 lt Q lt 795 79 79 lt Q lt 13 13 lt Q lt 43 43 lt Q lt 795 79 79 lt Q lt 13 13 lt Q lt 34 34 lt Q lt 795 29 lt Q lt 795 24 lt Q lt 795
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