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Water meter SVTU-11B

1. 11 Orpen ara penne 17 49 Appendix D Meter control menu Reference designation These buttons have the following functions Right Down 4 Left Move to next if corresponding button has gt gt been pressed Right in the case See continuation on the next page with corresponding title Menu item denoted as are indicated only for corresponding meter configuration Indication of menu item 13 Indicator in basic work mode The type of parameter and its dimension are displayed 123 56 C Indicator in menu item select mode Top line shows number of menu item and its name Bottom line can be used to display value of indicated parameter 1 3 Mass channel 1 12345678 t Editing of parameter can be done in three following steps indication of parameter current value editing the parameter To start editing press Right button indication of the result after ending of editing process After pressing the button Right edited symbol begins to blink 50 There two editing modes editing of digital value select an item from the list Editing of digital value Edited digit blinks Change of digit is provided by 3 3 2 1 PS1 loutO buttons Up and Down Move to the next digit is provided by button Right After reaching the las
2. DN 32 Figure 9 7 Installation of RTD S of type 2 3 and 4 without thermal pocket 29 45 60 a 45 60 1 5 2 I WLS lA 8 3 5 5 8 ee L Ha B 65 1 00 1 DN 32 DN 100 3262 76 2 DN 50 Figure 9 8 Installation of RTD S of type 2 3 and 4 with thermal pocket 30 9 4 4 Installation of pressure sensors Pressure sensors are installed strictly in vertical position The scheme of installation is represented in the appendix K Power module which is used for powering of pressure sensors should be galvanically isolated from power network Application o
3. 6 Hange SMP 711154 004 03 004 05 Mounting of FS 100 in accordance with DN of FS 7 Gasket paronite SMP 754152 013 Sealing of flanges FS 20 8 Gasket paronite SMP 754152 009 Sealing of flanges FS 32 2 pcs for 9 paronite SMP 754152 007 007 16 Sealing of flanges 1 FS FS 50 100 10 RTD pocket SMP 753137 002 03 Larp 5 mm type 4 11 RTD pocket SMP 753137 002 01 the RTE m Larp 80mm type 2 hydraulic impacts pcs for 12 RTD pocket SMP 302634 002 IRTD Larp 150mm type 3 13 Sealing ring fluoroplas 5 754176 003 Sealing of RTD for types 2 tic 3 4 14 ring fluoroplas 5 754176 003 01 Sealing of RTD bush for 1 pes for tic types 2 3 4 1 sleeve 15 Bush for angle a 45 SMP 723 144 007 7 16 Bush for angle a 60 723144 008 17 Bush for angle a 90 SMP 723 144 009 it 18 Bush for angle a 45 SMP 723144 007 01 19 Bush for angle 60 _ 723144 008 01 D RID bush don 20 for angle a 90 SMP 723144 009 01 21 Connecting pipe 1 2 x SMP 716161 004 For installation of pressure 1 4 sensor 22 Gasket paronite or fluo SMP 754156 010 For PS 1 pes for roplastic 1PS 23 Gasket paronite or fluo SMP 754156 010 01 For threaded roplastic 24 Gasket SMP 754156 001 Sealing of device connector 1 pcs AB 1000WLV Set 2 pes crampon 25 c
4. IWM aa IPU IWM gt N unu pue 03 dn qeO vi Surpuodsou100 dn 41543 o qe 47 48 Appendix B Schematic circuits for meter installations in different configurations Configurations 1 Calculator Water meter One water meter Figure B 1 Configurations 3 Two independent water meters Figure B 2 Appendix Overall and connecting dimensions of calculator PUMA H AN ce Game LM 2 M3x10 17473 80 4 10450 78 4 11 2 176 50 min 1 2 3 4 143
5. elo ae casein ul E wea actus eps 45 15 Transportations aute ee eset o sau A OO Seung 45 16 Guarantee of manufacturer a 45 Appendix A Meter designation a 47 Appendix B Schematic circuits for meter installations 48 Appendix C Overall and connecting dimensions of calculator 49 Appendix D Menu of control of the meter 50 Appendix E Examples of reports creating by Sempal DM software 58 Appendix F Schematic of device cable 60 Appendix K The scheme of pressure sensor mounting 63 Appendix L Overall and connecting dimensions for FS 64 Appendix M How to set hydraulic zero enne 67 Abbreviation list operating manual FS flow measurement section with ultrasonic flow sensors FIS RTD resistive temperature detector RTD T platinum resistive temperature detector manufactured by SEMPAL NSC RTD nominal static characteristic of RTD FIS flow sensor TS temperature sensor PT pressure transducer DN nominal diameter PN nomin
6. sod 0 800 199Z0 dINS lddru z sod 800 199Z0 dINS lddru 1 Ep 21981 205 195 septs uo 1 UoU8JM 9215 Jequinu jenas Sy y SI 20 oinssold 2215 pJepuels S4 v i 5 299 7 0 08 I 0 T 2171 Buyjees 140 Buyjees nu ejep uoneouqe sjueuuipoquie 22 24 Jo suoisueuuip 6unoeuuoo pue 65 Overall and connecting dimensions of FS 50 80 set embodiments Bends for flow sensor FIS Conventional installation pressure hs n holes d FS serial number FS standard size for FIS sealing L Arrow A Flow direction B on both sides n holes d FS of DN 100 150 66 Appendix How to set hydraulic zero Setting of hydraulic zero is necessary for exception of a systematic measurement error It is possible occurrence can be caused by difference in manufacturing and real conditions of setting zero This phenomenon appears as non zero meter indications when the real flow velocity is equal to zero This action allows eliminating of a systematic measurement error from measuring re sults Device maintena
7. L 2 pesa SMP 723144 009 3 SMP 405212 001 01 Lerp 80 type 2 150 SMP 405212 001 02 SMP 723144 007 150 type 3 27 9 3 Configuration of thermal Configuration variants for bushes of Angle pocket nominal length second type internal thread of bushes of incli mm nominal length is M16x1 nation of RTD L15 mm 5 753137 002 03 SMP 723144 008 01 60 type 4 Lyp 56 Lrtp 58 SMP 753137 002 01 SMP 723144 009 01 90 type 2 Lyp 78 5 80 1 SMP 753137 002 28 lt DN 32 DN 40 DN 50 45 60 a 245 60 65 100 1 DN 32 DN 100 3262 76 2
8. gt r uongeunByuoo 27 gt Jequinu jenas Z yoayo 53 Setup mode SETUP 3 1 Zero setting Zero setting Archive data format 3 2 Archive Mass volume or mass 4 PS parameters Enter temperature of cold water Only for configuration where it s used 3 5 Pressures 4 gt Use not automatic 3 6 Auto DST 3 6 Auto DST _Yes_ switch to daylight gt 3 7 Time Current time setup If meter in Not in account or in Stop accounting mode it is possible to change only minutes and seconds 3 8 Date Current date setting Only if meter in Not in account N 01_01_09 mode gt Menu item denoted as can be seen only if meter in Not in account mode Pulse outputs Wy 3 10 Batt replacement n 3 10 Replace battery bAttery gt WW v While this text is displayed it is necessary to perform battery D replacement At this time all measurements are stopped and lt 3 11 Accounting mode the device does not react to buttons If replacement is not made within 5 minutes the mode is cancelled If the battery is disconnected for a long time meter will shut down and accounting mode will change to Not in account Selection of work mode In account
9. in this mode heat calculation is provided Changes of meter parameters are forbidden Not in acc Not in account mode initial condition after device release Meter doesn t provide heat calculation Changes of meter parameters are possible Stop Parameters measurement is stopped Errors aren t displayed integrated parameters aren t saved up This mode is used when there is no water 54 Setup Set zero mode Set zero 3 1 1 Start set 0 Pressing any button leads to process interrupt 3 1 1 Set 0 All chan Zero setting is displayed Number of measurements and virtual 123 678 24 codes for each pair of flow sensor are indicated Jos 3 1 1 Set 0 Completed After process completion the result zero setting is GOOd Good successful completion Error there is an error Pressing any button Setup PS parameters mode PS parameters Select number of connected PS from 0 to 2 3 3 2 1 PS1 louto Two point of PS characteristic are entered For each point the value of output parameter output current for PS and pressure value are entered 3 3 2 4 PS1 P1 02 00 55 Setup Pressures mode Pressures Enter constant value for selected pressure 3 5 1 Ps 3 5 1 1 Ps const Ps for supply pipe Pret for return pipe Pew cool water v 3 5 2 Pret 3
10. All other requirements regarding straight pipe sections for FS 20 can be reduced twice Distance downstream of FS should be not less than 5 DN for modification M2 and not less than 10 DN for modification M1 for one beam FS and 5 DN for two beam FS If DN of flow pipeline and DN of straight sections are different then application of conical contraction is required The straight pipe section downstream a conical contraction should meet requirements for all flow measurement sections To calculate the minimal length of straight sections we use distance equal to DN in mm for appropriate standard size of FS for example DN 32 means 32 mm DN 50 means 50 mm etc It is not allowable to install any kind of disturbances on straight sections upstream a flow meter Internal diameter of a straight pipeline section should not differ more than on 5 96 from digital value of DN in mm for FS with DN20 DN32 0350 In other words nominal value of internal diameter of straight section should be 20 mm 32 mm and 50 mm corres pondingly real diameter of FS which is resulted in chapter 17 Parameters and characteristics of meter components for FS with DN65 DN150 For modification M1 deviation of internal diameter of straight section is permitted but no more than 5 negative deviation is not acceptable 9 4 Installation of meter componentry 9 4 1 FS installation 9 4 1 1 FS is insertion type of a flow meter 9 4 1 2 Delivery sets
11. TSx is over the tolerance Measured temperature value is above permissi ble maximum over 150 90 If TS with an error is involved into flow rate measurement process then all measure ments in the proper flow measurement channel would be canceled 13 4 Error group 2 This group includes flow rate measurement errors referring to one of applied pair of flow sensors one of enabled chords for sound propagation 2_1_x the error of flow sensors in beam x This error can be caused by follow ing reasons failure of flow sensors failure of flow sensors cable breakdown or fault no water in FS 13 5 Error group 3 This group includes errors referring to flow rate measurement If multi beam flow me ter is applied the error in measurement along one of sound paths not necessary leads to flow measurement error of flow meter 1 x measurement by FSx Flow measurement in mentioned FS is impossible 3 2 x temperature of FSx Because of malfunction of TS which measures tem perature in specified FS a flow rate measurement is impossible This error always takes place with an error of measurement by TS This error is displayed and is brought in error archive to define interrelation between a temperature measurement error and a flow rate measurement error 3 3 x high velocity in FSx The volumetric flow rate in mentioned FS exceeds maximum value for this FS type more than t
12. 5 1 2 Ps PS1 K v Choose appropriate source for selected pressure constant PS1 or PS2 If measured pressures PS1 or PS2 have been selected and in case of PS malfunction the constant value would be used in calculations 3 5 3 Pew const Enter constant value of cold water pressure 01 34 56 Setup Pulse outputs mode Pulse ouputs 3 9 1 Puls out1 info 9 Selection of informational parameter for pulse output 1 Volume Mass v 3 9 2 Puls out1 Channel Select data channel number number of 4 flow channel ex for pulse output 1 v 3 9 3 Puls out1 Weight 200 Enter pulse weight for channel 1 P L volume puls liter P t mass puls ton Selection of informational parameter for pulse output 2 Volume Mass v 39 5 Puls out2 Channel gt v 39 6 Puls out2 Weight gt Select data channel number number of flow channel ex for pulse output 2 200 P L Enter pulse weight for channel 2 P L volume puls liter mass puls ton 57 Appendix Examples of reports creating by Sempal Device Manager software Hourly report example Hourly parameters on 29 06 2010 Meter 00050 Configuration 7 page 1 of 1 Temperature C Errors type Notes 0 02974 0 10449 0 12175 0 10264 0 10512 0 12302 0 11601 0 11296 0 10326 0 10784 0 1
13. Otherwise change of velocity profile can lead to additional meter error After flow meter installation the flange painting should be done Figure 9 2 Figure 9 3 WARNING Please avoid welding of flanges to the pipeline if FS has been installed It can lead to flow meter damage because of overheating 9 4 1 5 Pressure loss on flow measurement sections Pressure losses at maximal flow Qmax don t exceed 0 085 kgf cm for all flow meters 1f there are no additional remarks Pressure loss for flow meters of DN20 in kgf cm is shown on the plot see fig 9 4 23 AP kgf cm 0 6 0 5 0 4 0 3 0 2 0 1 0 1 2 3 4 5 6 7 Figure 9 4 Pressure loss for FS 20 Pressure loss for flow meters of DN32 with straight sections DN 32 is shown on the plot see fig 9 5 The curve 2 demonstrates pressure loss directly on the flow meter of DN32 The curve 1 demonstrates pressure loss on the flow meter straight sections and conical 10 contractions while installing the flow meter of DN32 on the pipe of DN 50 kef sm 0 2 0 15 0 1 0 05 0 5 10 15 20 q m h Figure 9 5 Pressure loss for FS 32 24 For FS 50 pressure loss is resulted in fig 9 6 0 3 ho P kgf cm 0 15 0 1 0 05 0 20 40 60 80 Flow rate m h Figure 9 6 9 4 2 Installation of flow sensors 9 4 2 1 The order for installation of flow
14. all registered to this moment errors Doesn t have impact on measuring process 11 2 3 Indication of additional parameters Mode This mode is intended for displaying of minor rarely viewed measuring magnitudes It doesn t have impact on measuring process While working in Indication of main parameters and Indication of additional pa rameters modes in worst case situations the code and explanation of the failure is dis played see Chapter 13 35 11 2 4 Check Mode Check mode is intended for indication of parameters which should be checked Check mode doesn t interrupt measuring process and can be used either by auditor or by user In particular in this mode counters of entries into Setup and Verification modes are displayed 11 2 5 Setup Mode Setup mode is used during meter commissioning for hydraulic zero setting in volume measurement channels input of necessary parameters pressure etc and also for choosing an appropriate mode It should be considered that in account modes In account and Stopped menu of Verification mode is blocked In addition those items of Setup mode which should be unchangeable during process of measurement are also blocked 11 2 6 Verification Mode Verification Mode is used to evaluate measuring errors and calculating errors of ba sic meter performance and also to check correctness of their indication Verificatio
15. clear error message and returns to previous menu 51 52 Indication of main parameters mode Show current errors This item is displayed only in case of errors _ Measured 1 Add parameters temperatures 2 Check Wy 4 2 MM v 4 VU v 4 Verification Measured flow rates Measured pressures Err Break RTD1 1 01 1 1 Volume chan 1 12345678 m 1 2 Volume chan 2 Check Mode 12345678 m 1 3 Mass chan 1 Setup Mode 12345678 t 1 4 Mass chan 2 Verification Mode 12345678 t 1 9 Work time 12345678 h 1 10 Time of errors 0 0000678 h 1 11 Current time 12 34 45 1 12 Current date 04 07 08 Check mode edid 10 pue AY sjosues eouejsip 4 papaes 10J 1 uoneoipu aly padde 20 Jo Buikejdsiq 00 00T 54 200 0 54414 96 200 0 974 LALY ZSZ c 000 0 LALY FS peKe dsip si uW sujuoui GZ ul jueujeoejdai1 Swi gt jJu ui oe d 1 62 E 4 NOLLVOIJIS3A Jo Jaquunu 47135 semue Jo 1 yuo Aua dNLAS
16. length of FS due to the length of straight sec tions before and after places for installation of ultrasonic flow sensors 2 DN is the designation of nominal bore which numerical value is approximately equal to internal diameter of attached pipe sections 3 17 For configurations 1 and 3 in modification M1 water meter meets accuracy class 1 in modification M2 water meter meets to accuracy class 2 in accordance with EN 1434 8 Permissible error limits for configurations 1 and 3 while measuring water volume 1 0 01 q q for accuracy class 1 240 02 qy q for accuracy class 2 where q is measured flow rate value m h 3 18 Limits of permissible absolute error for water meters while measuring water tem perature are 0 2 0 002 0 C where is numerical value of temperature 3 19 Limits of pressure measurement error 0 5 when PT from meter s set are used 40 2 when customer s are used where is permissible error limit of customer s PT Specific coefficients of PT curve are entered into calculator s memory 3 20 The calculator has two passive pulse outputs Pulse outputs meet to class OD in ac cordance with EN 1434 Maximum switched voltage should be no more than 10 V while switched current is no more than 10 mA Maximum pulse repetition frequency is 100 Hz while pulse duration is 4 ms 0 5 ms 3 2 Pulse settings set by user are from 1 to 9999999 pulse unit Where unit is unit
17. of measure for transformed physical quantity The user can select from the following physical quantities volume pulse m mass pulse ton 3 22 Limits of absolute meter error while measuring the work time and non work time are 1 minute per 24 hours 3 23 Measurement information about water volume work time and non work time 15 stored in nonvolatile meter s memory within 8 years with power off 3 24 The maximal water overpressure inside flow measurement section is 1 6 MPa 16 kgf cm 3 25 Time for meter commissioning after battery installation is no more than 10 minutes battery is switched off in delivery set 3 26 Protection class of calculator enclosure is IP 65 3 27 Calculator mass is no more than 750 gram 3 28 Calculator overall dimensions don t exceed 170x110x35 mm and with device con nector and wall mounting accessories 250x110x60 mm see Appendix 3 29 Nominal diameters DN overall dimensions and FS weight as well as length and weight of RTD depending on their type are shown in tables 3 7 3 8 and in figures 3 1 9 9 3 30 Mean error free work time for meters is not less than 50 000 hours for calculators 100 000 hours 3 31 Total average meter life cycle is not less than 12 years Table 3 4 Types dimensions and weight of RTD T The notice Select the type depending on DN according to instructions mentioned in tables 9 2 9 3 and in figures 9 8 9 9 9 10 Mounting dimensions for RTD of t
18. of FS but installa tion on the downstream section is preferable While installing the RTD after FS the distance between the bush and FS should be not less than 5 DN and at installation before FS not less than 10 DN After bush welding it is necessary to process its thread by tap M10x1 5 or M16x1 5 depending on bush type While installing the RTD with inclination 45 or 60 it is necessary to drill 10 mm hole 16 mm for a thermal pocket and to saw it up to a necessary oval depending on thickness of a pipe wall see figure 9 7 The sealing surface of the bush should be protected from splashes of the fused metal during welding Before application of sealing gasket fluoroplastic ring a sealing surface of the bush should be greased While screwing the RTD in the bush the force put to a wrench of 200 mm length should be no more than 5 kg and provide hermetic seal The deformation of fluoroplastic gasket in the gap between sealing surfaces of RTD and the bush is not permitted Before screwing the RTD in the thermal pocket it is necessary to be convinced of clean liness of a thermal pocket and to fill it on 1 8 of volume with high temperature silicon lubri cant of any type Table 9 2 DN Configuration of RTD Configuration variants for bushes of first Angle mm nominal length type internal thread of bushes 15 M10x1 5 incli Lrp mm type Labeling nation SMP 405212 001 03 SMP 723144 007 Lrrp 58 type 4 SMP 723144 008
19. of the water m ton volumetric flow rate of the water m h water temperature C overpressure of the water MPa work time and non work time hour current time hours minutes seconds and date 3 8 The calculator provides storage of such archive data as measured values of volume mass of the water work time and non work time and also average measured temperatures per hour during 70 preceding days hourly archive per day within 1 preceding year daily archive stored information and measurable parameters can be read by standard interface RS 232C 3 9 The number of display digits for volume mass of the water 55 8 for volumetric mass flow rate of the water 55 5 for water temperature is 5 for overpressure of the water is 3 for work time non work time and current time is 7 3 10 The minimum bit value of digital display while indicating volume mass of the water can vary from 10 up to 1 m from 10 up to 1 ton volumetric mass flow rate of the water can vary from 0 001 up to 0 1 m h from 0 001 up to 0 1 ton h water temperature is 0 01 C overpressure of the water is 0 01 MPa work time and non work time can vary from 107 to 1 hour current time is 1 sec 3 11 Meters provide measurements of volume mass of the water in ranges of volume tric flow rates resulted in the table 3 3 The table contains values of the lower li
20. with FS of DN32 and DN20 include special pipe branches nipples which are welded to straight sections of the pipe during installation 22 For other FS the straight sections are included in delivery set according to customer s request Pipe branch with sleeve nut which is included in delivery sets for FS of DN20 and DN32 is a part of straight section and applied for further welding to pipeline to create re quired distance of straight section The axis of a branch pipe and straight section should be a uniform coaxial line without significant jogs and bends Transition jump from a branch pipe to a pipe should not exceed 0 5 mm 2 5 for FS of DN20 and 0 8 mm 2 5 for FS of DN32 9 4 1 3 While installing FS 20 FS connection to welded pipe branches with sleeve nut its position should be fixed to prevent a revolution by a screw driver S 2 30 mm which is based on special faces of FS see figure in Appendix L It is strongly prohibited to apply another place of FS to prevent FS revolution PS connectors FS body faces with marking For tightening a sleeve nut the screw driver 5 41 mm should be applied 9 4 1 4 While connecting flow meter s flange to the pipe the flange bore can be reamed to external pipe diameter with the least allowable tolerances The schemes for flange welding are given in Fig 9 2 and Fig 9 3 Flange mounting to the pipeline should be carried out without metal sagging on the in ternal pipe surface
21. 0 included see Table 4 2 Number configuration and dimension type in accordance with the order see Appendixes A and tables 4 2 4 3 3 Ultrasonic flow sensor FIS with fluoroplastic seal ring FIS for FS 20 aren t deli vered separately Flow mea surement section FS 20 is deli vered together with FIS SMP 407151 009 for FS 32 80 SMP 407151 011 01 for FS 100 Number of FIS for one FS is defined by number of places for their instal lation in accordance with the order see table 4 2 4 Resistive temperature de tector RTD T SMP 405212 003 01 02 03 Number and configura tion type in accordance with the order 5 Overpressure sensors PS Number type and com pleteness according to the order Complete set can include elements indi cated in Appendix K 6 Connection cable device cable SMP 685694 029 Number of communica tion lines and their length according to the order see Appendixes A 7 SVTU 11B Water meter Operating Manual SMP 407251 010 8 Packaging set SMP 323248 002 9 Modem Type is selected in coor dination with the custom er In coordination with the customer while ordering the MDM unit 10 Data Reader Special order 11 Adapter module MC 1 12 Special order Name and Marking Number Additional information reference designation 12 Protection enclosure SMP 301538 006 Special order 13 SVTU 1
22. 1000V should be considered 19 9 Installation 91 Unpacking and degreasing Unpacking and degreasing of meters are carried out after their being indoors within 2 hours while ambient temperature varies from 10 up to 30 C and relative humidity is no more than 80 To make unpacking please follow the instructions open packing boxes take a package with the calculator and operational documentation check up completeness of meters in accordance with the order take meter components from packing boxes make an external survey and be vinced that there is no mechanical damages coating infringements and isolation of connect ing cables Battery installation into calculator should be done as follows unscrew four screws which fix a cover of battery module connect a battery to a calculator board in accordance with the figure 12 1 carefully put a battery into a module battery cable should be located right inside a module close a cover of module and tighten it up by screws Wait for appearance of a notice battery on the indicator Set current time Procedure to set time is described in Appendix D 9 2 Installation requirements 9 2 1 Installation of meter components is carried out in accordance with chosen con figuration necessity of application of the additional equipment and also parameters of water consumption object Schematic circuits for meter installation depending on its config
23. 1B Operating ma SMP 407251 010 P92 Special order nual Part 2 Verification me thodology 14 Reserve belongings SMP 305653 001 Completeness and num ber is ordered Notes 1 FS is delivered with flanges and fasteners see table 4 3 2 FS can be delivered with straight pipe sections length is up to 25 internal diameters of the pipeline The specified sections can be welded to flanges if necessary While or dering straight pipe sections all necessary materials for installation for example elec trodes for welding paint sealing materials etc can be delivered additionally 3 Reserve belongings can include elements listed in the table 4 1 table 4 3 enclosure of the SVTU 11B calculator a board of the SVTU 11B calculator as it was ordered 4 Data Reader can be delivered as a pocket PC laptop or as a dedicated device RDU 02 Model of pocket PC or laptop is selected by customer 13 Designation and basic parameters of FS in complete set indicated in the table 4 2 For outline drawing of FS see Appendix L Table 4 2 Marking on FS Number of places for flow sensors Nominal Nominal pressure Single beam flow measurement section Another componentry included in delivery set in accordance with the obligatory or ad ditional order are listed in the table 4 3 4 2 configuration FS type connecting cables number of communications channe
24. 2402 0 12017 0 11983 0 15382 0 14512 0 13478 15 25 60 60 5341 2496 147 371 119 721 27 650 1 82458 5 10 408 1 02 0 00 60 69 53 41 24 96 Daily report example BILL of page 1 of 1 heat consuming from 29 06 2010 to 29 06 2010 Organization Address Account Meter SVTU 11 S N 00050 Configuration 7 Conventional data heating ventilation Dat Twork Temperature C Flow rate m3 Heat Pressure kgf cm2 Temperature C ate rrors type 29 06 2010 15 25 60 69 5341 24 96 147 371 119 721 27 650 1 82458 5 10 4 08 1 02 0 00 60 69 5341 24 96 15 25 60 69 53 41 24 96 147 371 119 721 27 650 1 82458 5 10 4 08 1 02 0 00 60 69 53 41 24 96 Measurement system used in report SI or SGS chosen by user in Setup mode menu Errors report example Hourly data of errors for meter S N 54 from 15 01 2010 to 28 01 2010 1 of 1 Date Error code and duration in hour 15 01 2010 1800 1 1 12012 1_1_2 012 311 012 312 0 12 16 01 2010 10 00 11 12049 1122049 311 051 312 051 14 00 11 124100 1122100 3112100 312 100 1200 11 12100 112 2100 311 2100 312 100 13 00 1112100 112 2100 3112100 312 100 1400 11124100 1122100 3112100 3122100 1500 11 12100 112 2100 311 2100 312 100 1600 1112100 112 2100 3112100 312 100 1700 1112063 112 063 3112092 3122082 58 Journal report example Event journal for meter S N 00050 29 06 2010 no 29 06 2010 14 09 2010 1
25. 3 41 03 page 1 of 1 Date Journal record 29 06 2010 07 44 09 Exit from SETUP mode 29 06 2010 07 43 45 End of reset 29 06 2010 07 43 45 Data clearing 29 06 2010 07 42 20 3 2 Archive Volume _ 29 06 2010 07 42 02 SETUP mode enter 59 Appendix F Schematic of device cable To calculator lt To sensors and peripheral devices X2 11 FIS 1 X3 To FSI ade FIS 2 21 FIS 3 5 FS2 A22 FIS 4 X6 Bl B2 XT To TS Device 2 X8 connector TS 3 PSI C2 PS2 To PS X10 PP 85232 interface X11 Puls outputs The notice Enumeration of connection lines according to tables 9 4 and 9 5 60 Schematic of device cable To connector 1 To Sensors and lt of SVTU 11 calculator peripheral devices os 22 ____ X1 row FlowSenst1 16 e 151 Eowsens1 16 ra T row X3 Fosse 6 row FIS2 FlowSens12 4 Forsen BA FIS3 FlowSens21 Flow ____ 5 FlowSens22 FIS4 FlowSens22 DPD RxD ______ RTS _____ DTR GNDRS PressIn1 PS1 Green black PressGND X11 PressIn2 PS2 PressGND X12 Green black 61 Pinout of connectors plugs DHS 44M plugs DB 9M sockets DB 9F of device cable Viev B Viev C cont 1 Viev A COMETS cont 1 cont5 cont 5 cont 1 cont 30
26. Water meter SVTU 11B 130 9001 2000 FLOWMETER SVTU 11B Omin 0 C Omax 150 C Class 2 Env class Operating manual SMP 407251 010 Part 1 September 2010 Documentation 1 Operating manual SMP407251 010 OM part 1 2 Operating manual SMP 407251 010 OM part 2 Verification methodology Table of contents Ty PRET AC AE p 6 a 6 specifications 6 gt 12 5 Meter and functioning nan A Dee 15 6 and Sealifg added 18 FEE CS INS and TARO 18 8 Safety precautions ue cose eue toto ta tai ences Mee eae 19 o eoi aped Dua hacen sea uae sed 20 9 1 Unpacking Ande Crea SING 20 9 2 Installation sed ea rS PE URS Sar T ed aeri Lou Vert 20 9 3 Requirements to FS installation and arrangement 21 9 4 Installation of meter componentry 22 Setiny p Procedutkes 32 LIL The operating procedure 35 I I T UU TT 38 13 Typical faultinesses and methods of their elimination 42 I SST
27. al overpressure PC personal computer RDU data reader X digit on the device display Information for customers SVTU 11B water meters hereinafter referred to as meters are complex measuring de vices which should undergo the starting up and adjustment works by qualified personnel during commissioning Manufacturer s guarantees 48 months since shipment extend on the meters which were put into operation by the specialized enterprises having corresponding credentials from company manufacturer More detailed information is resulted in section 16 Manufacturer s Guarantee A recalibration interval is no more than 4 years The Quality System of SEMPAL is certificated under ISO 9001 2000 If you have any questions about purchase maintenance operation and service of me ters contact us or our authorized regional representatives SEMPAL LTD contacts 3 Kulibina Street Kyiv 03062 Ukraine Phone fax 38044 239 2197 38044 239 2198 http www sempal com 1 Preface This operating manual hereinafter referred to as OM contains the following informa tion the assignment field of application performance capability and completeness a prin ciple of operation and a design the method of installation and commissioning the method of operation and maintenance service of meters While meters are in exploitation it is necessary to be strictly guided by present OM Constantly working at functional e
28. at its commissioning is blocked if setting of hy draulic zero is not made Detailed information about zero setting is given in Appendix M How to set hydraulic zero If during meter startup its commissioning was not provided a proper warning will be displayed on the indicator After ending of the above stated operations meters are ready for functioning WARNING While in service it is forbidden to disconnect sensors to change arrangement of sen sors to prevent such not authorized actions a mechanical socket sealing of all FIS TS PT is stipulated to switch off the calculator to install meters on the pipeline with incomplete partial water filling of FS or on the pipeline supplying the water in steam condition In all above stated cases the water meter will register failure operating time which is subtracted from the time of water volume measurement Power off time time with disconnected bat tery isn t considered during failure operating and would be displayed in a mode Indication of additional parameters If the water was cut off for a long time interheating period repair of the system etc and it had led to occurrence of stagnations in the pipeline drains a rust bubbles etc it is recommended to set the Stop mode and to provide the guaranteed absence of the water in a flow measuring section 33 Scum on internal FS walls reduces the real FS diameter and can lead to overestima tion of water flow rate
29. box with the calculator should be fixed to except accidental moving at shipment in vehicle 16 Guarantee of manufacturer 16 1 Manufacturer guarantees that produced water meters meet to all requirements of their specifications within 48 months from the moment of shipment if the consumer observes the following conditions installation starting up and adjustment of the water meter is made by the organiza tion which has the manufacturer s sanction a mark of the organization which has provided installation starting up and adjust ment of the water meter should be put in section 19 of present Operating manual 45 conditions of service transportation and storage meet to requirements in Chapters 8 11 14 and 15 of present Operating manual 16 2 Guarantees are extended on defects of meter components in delivery complete set in case of manufacturing defects defects of materials and componentry 16 3 Guarantees provide replacement of defective componentry and check of meter working capacity by manufacturer 16 4 Faulty device should be delivered to the manufacturer for testing and repair 16 5 Unsealing of the calculating unit breaking of seals before its returning to the man ufacturer is not allowed 16 6 Guarantees do not provide expenses indemnification for dismantle return and re peated installation of the device and also any secondary losses caused by malfunction 16 7 In case of malfunction identification dur
30. c washing up liquid of any type and then by water 12 5 Meters calculator ultrasonic FIS temperature sensors flow measurement sections undergo a verification after maintenance 2 Recalibration interval is no more than 4 years FS of DN20 should undergo verification procedure with undamaged seals on FIS 41 13 Typical faultinesses and methods of their elimination While in operation the meter constantly checks both the working capacity of its units and the working capacity of sensors flow sensors temperature sensors etc connected to the meter Diagnosed errors are subdivided into groups according to a priority importance for rea lization of correct measurement The group number is less the error importance is more The error code includes its number and number of the measurement channel in which there was an error Displayed error looks on the indicator as follows example Er 1_3_1 Here 1_3_1 is error code which consists of group number first digit error number second digit and measurement channel number third digit In this case measurement channel number is a number of temperature sensor Simultaneously only one error can be displayed on the indicator To view all errors it is recommended to use Errors mode 13 1 System errors As mentioned above the lower number of errors the higher its priority Without priori ties there are system errors errors of internal meter s hardware which generally prec
31. cified points Ug is value of measured current on the output of PT PO D 5 12 5 8 While measuring time parameters the meter carries out measurement of following quantities time of correct work running or work time time of incorrect work time of er rors power on time power off time non work or idle time and also displays current date time taking into account daylight saving Time of correct work running time Trun or work time device operating time power on no error messages Time of correct work on 1 st and 2 nd channels is displayed on the water meter indicator in a mode Indication of additional parameters see item 11 2 2 table 11 3 of this Manual and also Appendix D Time of incorrect work time of errors Terr device operating time power on there are error messages Terr values are presented in printouts of stored data archives and error archives 16 Power on time Tpower total time when the device power supply voltage is on It is indicated on the meter display in a mode Indication of additional parameters and also is presented in a daily archive printout Power off time idle time Tidle or non work time total time when the device pow er supply voltage is off It is displayed on the meter indicator in a mode Indication of ad ditional parameters and also included in daily report Current date time current time taking into account daylight saving It is indicated on the m
32. d fragility and do not permit shock and excessive compress ing loads That is why IT IS FORBIDDEN to swap around flow sensors for different channels to install flow sensors with marks 11 21 intended for installation in the first flow meter bush according to flow direction into the second bush and sensors with marks 12 22 to install into the first bush to drop ultrasonic flow sensors or to knock on them at transportation and installation to carry out mounting and dismantling of FS with installed ultrasonic flow sensors to accomplish metalwork or welding works on the pipeline closely to FS with the in stalled ultrasonic flow sensors to exceed the mentioned above force for tightening of FIS to dismount stuck to FS flow sensors while turning them in bushes during regular service 9 4 2 3 For the removal of the flow sensor its design provides special elements The manufacturer has developed and can propose special removers or complete set of design documentation for their manufacturing for FIS of DN 32 80 see remover SMP 296454 004 for FIS of DN DN 100 150 see remover SMP 296454 001 9 4 3 Installation of temperature sensors Temperature sensors manufactured by SEMPAL Co RTD T can be installed in two ways by screw driving in bushes lugs of the first type welded into the pipeline for direct contact of the RTD with the water by screw d
33. eak in places of meter installation reliability of contact joints no mechanical damages on plastic details safe isolation of connecting cables measuring data output in accordance with items 11 2 1 At the end of the heating season it is recommended to clean of flow sensor surfaces us ing washing up liquids weak solutions of alkalis or acids without mechanical cleaning If water meter was out of service for a long period of time it is recommended to switch the me ter into Stop mode and provide the guaranteed absence of the water in a flow measurement section 12 4 2 Maintenance 2 is carried out before regular verification of meters Following operations should be carried out operations provided by maintenance 1 visual check of precipitation on the inner surface of flow measurement section FS dismantling and cleaning of FS according to item 12 5 1 and dismantling and clean ing of RTD if severe precipitation has been detected Dismounting and cleaning of FS of DN20 should be carried out only at manufacturing company or in authorized labs for verification Dismounting and cleaning of FS is carried out in the following way to dismount ultrasonic flow sensors except for FS of DN20 to dismount FS from the pipeline if possible to carry out visual check of FS and if necessary to clean mechanically its inner sur face from precipitation to wash out inner FS surface by a syntheti
34. ease date according to the certificate should be considered as damaging of the seal installed by inspecting organization The possibility of mechanical sealing of the calculating unit with the use of sealing cups with holes on device case is stipulated So the fact of intervention in device functioning should be registered by analysis of event journal All user s actions which lead to change in device readings are dated in the event journal If the event journal has a record about entering into service mode but no records about meter parameters changing it means that the user logged in and imme diately logged out without changing meter parameters and performance 12 1 2 In doubts of correct installation or proper operation of the water meter it is ne cessary to run Check mode and to compare correctness of the entered values for RTD tem perature coefficients FS exact diameters distances between flow sensor transmitters and FS conversion ratios to data resulted in Chapter 17 Parameters and characteristics of meter components Thus compared values can differ in limits which are not exceeding units men tioned in Chapter 17 of this OM 12 1 3 It is necessary to consider that water meter commissioning begins with reset zeroing of its integrated indications accumulated measuring data on setting account mode to In account Reset of indications also should be carried out after meter repair or verifica tion 12 1 4 Diff
35. erence between power on time and time of correct work means that a water meter operated incorrectly switching off breakage or short circuit of sensor cables absence of the water etc see item 10 8 Therefore sealing of flow sensors or their connectors is not obligatory However the possibility of mechanical sealing for flow sensors and their connec tors with a use of proper holes in clamping nuts of FIS and connector housings is stipulated 12 1 5 To except a non authorized influence on RTD parameters and so on temperature measurement accuracy it is necessary to mechanically seal up the temperature sensor using a hole in RTD housing 12 2 Maintenance service is carried out by the representative of service organization During servicing it is necessary to carry out the security measures interpreted in Chapter 8 38 12 3 Battery replacement Battery resource is indicated in Check menu and also included in current status report Battery replacement lithium battery voltage 3 6 V should be done at least once every 6 years Replacement can also be carried out sooner or later depending on meter operation Battery replacement can be done without breaking of measuring process or with break ing when verification is needed Battery should be ordered only at manufacturing company Installation of other type batteries is forbidden The order of battery replacement run Setup mode Battery replacement item after confirmati
36. eter display in a mode Indication of additional parameters Automatic switch to daylight saving time mode can be on off Measurement indication and registration of above listed parameters are carried out in hours In figure 5 1 the timing sheet is represented It explains how time of correct work Trun and time of non working condition Tnw for accounting period are resulted Dur ing Trun authentic measurement of all parameters was made during Tnw there is no regis tration of any parameter or there is no power supply voltage battery disconnected Tnw Figure 5 1 5 9 connect to external devices RS 232C is applied RxD TxD RTS lines are used 5 10 Meters have a few separate modules which connected between themselves They are calculator temperature sensors flow measurement section with ultrasonic flow sensors pressure transducers 5 10 1 The calculator housing has four control buttons the digital display slot for con necting cable Water meter control buttons are described in chapter 11 and Appendix D 5 10 2 Meter s digital display has two sections The first one contains a 8 bit 7 segment indicator and specific symbols In this section the measuring data and units are dis played The second section is a row for displaying text information It is arranged in the up per part of indicator This section is enabled if the user needs to see additional information and complete some kind of actions in de
37. f pressure intake devices is obligatory 9 4 5 Mounting of the calculator The calculator can be fixed in horizontal position on the table stand or shelf or in ver tical position on the wall or in device enclosure For fixing of the calculator special accessories in delivery complete set are provided The scheme for fixing is given in the appendix C 9 4 6 Cabling After installation of all meter components their bond by means of connecting cables from the delivery complete set is made in following sequence 1 cabling 2 cable connection to the calculator RTD and ultrasonic flow sensors Cabling is carried out under following requirements cable mounting should exclude a possibility of its contact with pipelines and other elements if their temperature is below a minus 40 C or above 70 C cable protection against mechanical damages should be carried out by cable groom ing in pipes hoses ducts etc Cable grooming for one meter in one protective housing is permitted cable grooming of two and more meters should be provided in protective housings separated from each other on a distance not less than 5 cm for prevention of mutual electro magnetic inductions after cable grooming it is necessary to make their connection to meter components considering marks of cables The rest of the cable should be left in device enclosure WARNING Grooming of connecting cables near power supply lines or in their protective h
38. fluctuations in the tapped section will stop If value of the first group of digits displayed on the meter indicator and registered by the meter as water zero velocity noticeably exceeds 500 or number of measurement cycles then some obstacles are possible on tapped FS air bubbles in FS water leak through valves significant level of external electromagnetic noise 68
39. group 3 D flow rate measurement errors error group 2 pressure measurement errors error group 6 For example record BD means that there were errors of group 1 and group 2 More detailed information on these errors can be taken in the error archive printout In error archive printout the error code in the above described format and duration of this error in hours are mentioned Within one hour up to 4 polytypic errors can be registered in archive and for a day up to 8 polytypic errors can be registered If the number of errors is more than it was mentioned than the most significant errors are stored For example the error of one TS can cause some more other errors so only error of TS will be displayed Examples of archive reports are in appendix E The list of certain faultinesses and methods of their elimination are resulted in table 13 1 Table 13 1 Appearance of faultiness Method of elimination 1 There is no indication on The battery is completely Replace install the battery the indicator discharged or not installed 2 The meter does not react The calculator is faulty Provide a repair of the calcu on button pressing lator The notice A repair of the calculator should be provided by specialized manufacturing division 14 14 Storing 14 1 Water meter storing can be made in heated or unheated storehouses Meter life cycle in heated storehouse is no more than 10 years in un
40. gt of cable socket 05 7 is used in device cable Hole for sealing Cable MOVE 62 Appendix K The scheme of pressure sensor mounting Recommended mounting scheme for pressure sensor CTU8300GQ6 as example and dimensions of pressure takeoff devices Connector plug Intake device for supply pipeline of sensor SMP 408870 001 Sensor CTU8300GQ6 222 Gasket SMP 754176 011 Connecting pipe 1 2 x1 4 Threaded SMP 716161 004 Gasket SMP 754176 011 01 Sealing hemp or teflon tape Ball plug valve Intake device for return pipeline with tap of Maevsky SMP 408870 001 01 20 min Screw depending on base type 300 1 2 2 MM Base HER Clamp f Gasket Corbel Pressure intake device 214 SMP 408870 001 001 01 pipe 14 1 6 1 The sensor is mounted in strictly vertical position see figure 2 If water characteristics don t meet to technical requirements then to prevent polymeriz ing crystallizing and pollution on a sensor it is necessary to mount a membranous divider with application of dividing organosilicon liquids 2 3 The length of tubes should provide cooling of water up to 70 C 63 Appendix L Overall and connecting dimen
41. heated storehouse is no more than 5 years 14 2 Storage conditions for meters 1 in heated storehouse ambient temperature can vary from 0 up to 50 C relative air humidity is up to 80 while temperature is 30 C and below without moisture condensation 2 in unheated storehouse ambient temperature can vary from minus 5 C up to 50 C relative air humidity is up to 95 while temperature is 35 C and below without moisture condensation 14 3 At long term storage in unheated storehouse meters should be placed in an addi tional cover from a polyethylene film 15 Transportation 15 1 Meters can be transported by all modes of transport Their packing should provide protection against direct influence of atmospheric precipitation While transporting by air transport meters in packing should be placed in hermetically compartments 15 2 Transportation conditions ambient temperature for calculator can vary from minus 20 C up to 50 C for FS can vary from minus 50 C up to 70 C relative air humidity is up to 98 while temperature is 35 C transport jolty with acceleration 30 m sec while frequency varies from 80 up to 120 beats per minute 15 3 Meters are steady against influence of sinusoidal vibrations while frequencies vary from 5 up to 35 Hz with amplitude up to 0 35 mm 15 4 Throwing of meters during delivering and unloading it is not permitted FS and packing
42. ing a warranty period the consumer should report unsatisfactory condition of the equipment to manufacturer SEMPAL Co LTD 3 Kulibina Str Kyiv Ukraine 03062 Phone Fax 38 044 239 2197 239 2198 http www sempal com 16 8 Do not put in claims to a water meter in following cases installation starting up and adjustment have been carried out by organization which has no manufacturer s license on carrying out of such works damage of seals on the calculating unit the expiration of a warranty period violation of service storage and transportation regulations stipulated by the opera tional documentation 16 9 After ending of a warranty period or loss of the right on warranty service the manu facturer makes repair of water meters according to a tariff 46 Appendix Meter designation Example of designation 3 RU50 RU50 4b45p 4 0 3 5 3 5 0 3 5 1 2 Interpretation 1 2 yndyno esnd 9555 MBUA e qe 2181 103 Sd JO 129 Sur 5 puodsouuoo 0 dn qeO 394204 S starp ysng jo uon jo o 3ue 8 UHA q z porfdde ust GLY 0 ALA podde Jo I as 8 AJOATTOP u AY Jo sod L N 24 uoneJn3rTjuo I
43. ipeline see figure 9 1 it is possible to provide the drain valve Please follow the requirements resulted below while installing FS the pipeline section chosen for FS installation should be located in horizontal plane a deviation from a horizontal within the limits of 20 bushes for flow sensors are also arranged in horizontal plane with a deviation from a horizontal line no more than 20 Minimal straight pipe distances downstream of flow disturbances in accordance with specified meter accuracy should be not less than mentioned in the Table 9 1 21 9 1 Flow Disturbance Modification M2 Modification M1 Conical Contraction with an angle no more 7 DN 10 DN than 20 Single 90 Bend 10 DN 15 DN Gate valves two 90 Bends in perpendi 15 DN 20 DN cular planes Pump 20 DN 30 DN Remarks Completely open globe valve is not considered as a disturbance The straight upstream pipe section between two serial flow disturbances should be not less than 5 DN Otherwise upstream straight section should be increased by the length equal to a difference in millimeters of the required and real distances between disturbances Straight pipe sections upstream and downstream FS 20 while applying conical contrac tion with an angle no more than 20 should be not less than 60 mm In this case welding of special branch from complete set just to a conical contraction is possible
44. ls and their length are specified while ordering The format of meter s marking is giv en in Appendix A Description of design features for FS and also drawings mounting dimensions are re sulted in Appendix K Warning Identification of FS standard size is provided by marking of nominal diameter DN on FS body Thus numerical value in FS reference designation meets to a numerical value in a de signation of a nominal diameter DN see table 4 2 Example Marking DN 32 put on the flow measurement section with reference designation FS 32 Next element of marking 16 means that this flow measurement section is in tended for use in heat or water supply systems with overpressure 1 6 MPa 16 kgf cm Table 4 3 Componentry included in delivery set Set of delivery Name Marking Assignment Number obliga Special tory order 1 Pipe nipple SMP 752291 001 Connection of FS 20 with straight pipe section 2 nipple 5 302661 002 Connection of FS 32p with 2 pes for straight pipe section 1 FS 3 Sleeve nut SMP 758422 006 Mounting of FS 20 4 Sleeve nut SMP 758422 001 Mounting of FS 32 5 Flange SMP 711154 013 01 013 03 Mounting of FS 50 80 013 05 in accordance with DN of FS 14
45. lude the operation of the meter If there are such errors no parameter is measured and accumula tion of any parameters is not provided Such errors are displayed on the indicator as follows example lt S YSErr02 Number means an error type System errors are registered in the event journal with some text decoding if possible In case of system error the meter should be delivered to manufacturer for repair 13 2 Error group 0 In group 0 following errors are included 0 1 0 The error of flow rate measurement Flow rate measurement in both chan nels is impossible 0 2 0 Error of ADC Temperature measurement in all channels is impossible 0 3 0 The error of calibration of temperature detector Calibration parameters have been distorted somehow 0 4 0 The error of calibration of pressure transducer Calibration parameters have been distorted somehow 13 3 Error group 1 This group includes errors referring to temperature measurement the sign x specifies number of the channel 1 1 x break of TSx 1 2 x fault of TSx 1 3 TSx is failed Resistance of mentioned TS is out of specified limits 1 4 x The error of incorrect coefficients for TSx while calibrating coefficients are entered manually 42 1 5 TSx is below the tolerance Measured temperature value is below permiss ible minimum below 50 C 1 6
46. mit of the flow rate qj permanent flow rate and the upper limit of the flow rate q Table 3 3 Blow measurement Measurement range of the water m hour 9 s 65 F 50 07 _ 70 90 The lowest measurable volumetric flow rate is equal to 0 5 q If the flow rate is lower than q flow rate measurement error is not standardized 3 12 The temperature of the water can vary in a range from 0 up to 150 C The measurement range of secondary not for mass calculation temperatures can vary from 49 C to 150 C Number of channels for temperature measurement can vary from 1 to 3 in accordance with the order 3 13 The maximal pressure measured by the meter is 4 MPa The range of the electric signals from pressure transducer varies from 4 up to 20 mA 3 14 Meters have output signal for data communication by standard interface RS 232C 3 15 Meters power supply is realized by built in lithium battery of 3 6V Battery life cycle is 5 6 years Battery replacement can be done directly on site without meter shutdown WARNING Meter is delivered with switched off battery While delivering by air transport the battery should be switched off and removed from the meter 3 16 Nominal diameters DN overall dimensions and weight of FS and also length and weight of RTD depending on their type are shown in tables 3 4 3 5 and on Figure 3 1 The notice 1 It is possible to increase the total
47. n Mode is used for automation of water meter performance verification in case of regular verification Verification is conducted only by authorised personnel 11 2 7 Limit prolongation Mode It is intended for password entering if time limit prolongation is needed 11 2 8 Password entering Entry into service modes Setup and Verification is permitted only after entering the proper passwords to avoid non authorized access to parameters saved in calculator memory To run a proper mode in the menu password is requested The manufacturer set the following standard passwords for service modes see table 11 1 Table 11 1 MODE STANDARD PASSWORD Setup 25205757 On customer s demand the manufacturer can set INDIVIDUAL PASSWORDS for service modes that is equivalent to additional ELECTRONIC SEALING of the calculating unit and provides inaccessibility of unauthorized users to saved up measuring information The password is represented by 8 digit integer number to get access to one of service modes Symbols on the indicator mark bits for entering password digits Non masked open value of input digit is displayed only in that digit place in which input of its values editing is provided While entering a password press the button To the right to move the cursor on one digit place to the right It allows to change any digit of the password Pressing buttons Up and Down leads to a change i
48. n the digit value Pressing the button To the left means ending of password entering If during 2 minutes there was no pressing any button the meter switches from Enter password mode to Indication of main parameters mode On figure 11 1 the way to run Setup mode is given 36 4 TCheck y Setup Correction Enter password SETUP Ok kK KKK 1 Set zero Pressure Figure 11 1 37 12 Servicing 12 1 The Instruction to the representative of inspecting service 12 1 1 The SVTU 11B water meter is protected from consumer intervention as well as intervention of heat supply organization Any changes of a water meter parameters can be carried out only in Setup and Verification service modes To except a non authorized access into device functioning process and prevent possible attempts to change any device constants calibration factors of thermoresistor Kdl and Krc flow rate conversion ratio geometrical parameters of a flow meter the fact of login or running through these modes is fixed in the Check mode The opportunity to check inputs in the specified modes is equivalent to a mechanical sealing i e it substitutes mastic seals branded labels etc so it is electronic way of sealing of the calculator Therefore the basic attention should be paid to the number of entries into service modes Difference of this number from the recorded one at the moment of device commissioning rel
49. nce without zero setting or with incorrect zero setting can lead to sig nificant flow measurement errors especially in a range of low flow rates Zero setting should be carried out at device commissioning after mounting dismantling of flow sensors FIS during routine maintenance after changing of order of cable connections to flow measurement section FS at inspection of flow measurement channel functionality Zero setting in each water meter channel is desirable to conduct at first out of pipe on tapped FS and then it is obligatory on the object If there is no possibility to cut off a wa ter zero setting out of pipe is a unique way for correct device commissioning Thus it is ne cessary to provide repeated connection of flow measurement channels cables and FIS which has been used during zero setting in laboratory conditions Thus FIS should not be disman tled from tapped FS 1 Inspection of correctness for zero setting on tapped FS 1 1 Assemble a flow measurement section with technological tap at the end face lo cate it vertically fix flow sensors and completely fill FS with preliminary boiled or settled water Clean end faces of flow sensors from remained air bubbles manually by a finger or a brush if they were appeared during filling of FS 1 2 Connect flow sensors FIS and resistive temperature detectors RTD to corres ponding cables 1 3 No error messages concerning flow rate and temperat
50. nhancement improvement of performance capability and increase of meter reliability manufacturing company SEMPAL Co LTD reserves the right to itself to change the meter design without claiming it in present OM 2 Assignment 2 1 Water meters SVTU 11B are intended for measurement of the water volume and mass Meters also measure the volume mass temperature and overpressure of the water or fluids with solid particles of no more than 200 um and residue mass of no more than 500 mg l hereinafter referred to as a water 2 2 Meters are applied for metering including fiscal metering of water volume accord ing to acting rules for the control of supply and consumption of water on industrial objects and objects of municipal services Functional features of meters configurations are given in 3 5 3 Technical specifications 3 1 Water meters can have next configurations I channel water meter 3 2 channel water meter two independent water meters 3 2 Meters depending on their permissible error limits while measuring volume and mass of the water are released in the following modifications M1 and M2 3 3 Meters of all modifications in accordance with environmental conditions meet class C of EN 1434 1 The meters can work under the following conditions atmospheric pressure can vary from 84 0 up to 106 7 kPa relative air humidity is up to 95 96 3 4 Meters meet the requirements of EN 1434 3 5 meter consist
51. odes of control of the meter Some service modes Setup Verification are protected from non authorized access by the password The meter modes are given in the Appendix D 11 2 1 Indication of main parameters Mode The device switches to Indication of main parameters mode after battery installa tion after device set up in Setup mode after ending of work in service modes Check Verification and also at automatic returning to Indication of main parameters mode if buttons are inactive Depending on meter configuration the proper measured parameters which meet to a given configuration are displayed on the calculator indicator In this mode error messages are shown on display Meter has three accounting mode Not in account this is initial mode In this mode it is possible setup some meters in Setup menu This mode indicated by periodically display text no rSt n account mode This is main mode for accounting There is no additional indica tion for this mode Stop mode This mode can be activated when no water in pipe for long period etc In this mode no data are placed in archive and no errors indicated 11 2 2 Errors Mode The menu of this mode is appeared only if some errors in device functioning take place This mode is used for presentation of complete not only code but text information about running errors It is possible to see
52. on of replacement meter switches to battery replacement mode and battEry is indicated on the meter display Being in this mode meter stops measuring process and wait for battery replacement unscrew four screws that fix the cover of battery slot on the back side of the meter remove the battery and disconnect it from the meter install the new battery put it in the slot so that the wire should not be bent by slot cover close the cover of battery slot and screw the four screws to provide tightening of the slot gasket press To the right button on the meter keyboard Meter switches from battery re placement mode to measuring process Time of starting and ending of battery replacement is recorded in the event journal and time period of replacement is identified as meter non work time Warning After switching off the old battery the new one should be switched on in 5 minutes Otherwise meter stops metering and resets current time This also will be registered in the event journal If after entering battery replacement mode procedure is not completed within 10 mi nutes the meter switches to a regular measurement mode The order of battery replacement is represented in Figure 12 1 39 12 4 There are two types of maintenance for meters 1 and 2 12 4 1 Maintenance 1 is carried out on a meter operation place once in six months and includes visual check and check of working capacity Check visually no l
53. orbel n a Mounting of the Calculator 2 pcs washer star 2 pes screw M4 hex 2 pcs Fixings thread diameter d and bolt length L fit to holes in flanges and total flange thickness 26 screw M3x10 Mounting of device connec 4 pcs 27 washer 3 tor 4 pcs 28 A dxL 88 35 019 In accor 29 A d 9 35 019 dance with total number FS 50 100 of holes in FS flanges see table 3 3 5 Meter s structure and functioning 5 1 The principle of flow measurement of water volume is ultrasonic time of flight The time for the sound to travel between a transmitter and a receiver is measured The time dif ference is proportional to the average fluid velocity and flow rate correspondingly The inte grated momentary flow rate values give the information about water volume which has passed through FS The mass is calculated as a function of volume and density of the flow depending on its temperature 5 2 Water temperature is measured by platinum resistive temperature detectors installed in appropriate pipes 15 53 Flow rate measuring process is continuous Flow rate measurement is occurred few times per second and obtained data are stored Reading of stored data is occurred 1 time per second to calculate the quantity of water Measurement cycle for temperature and pressure is one time in 10 sec Every measurement cycle lasts for 1 sec and includes measurement of water parame ters as well as self diagnostics of
54. orrectly repeat this operation while installing device on the object the description of operating modes is also given in Chapter 11 10 3 While installing device on the real object it is necessary to fill with water the pipeline with installed flow measurement section Run through FS the water with increased volumetric flow rate during 10 minutes Be convinced of no leakage in places where meter components are installed and no error messages on the digital display of the calculator The list of these messages is resulted in Chapter 13 10 4 Accomplish mentioned hereinafter actions in Setup mode To login in Setup mode see instructions described in item 11 2 8 the order of menu access in Setup mode is described in item 11 2 5 and also in Appendix D In Setup mode set hydraulic zero for the channel of volume measurement set a proper archiving format for the water volume data set In account account mode At this time reset of all meter parameters for certain calculating channel would be done For zero setting following actions should be done zero setting should be carried out not earlier than in 10 minutes after battery installa tion cut off a water flow but FS should remain completely filled with water provide zero setting according to Setup menu item In case of failure or wrong zero setting the measurement error increases and can exceed permissible value Reset of device readings
55. ous ings housings of power lines is forbidden Cable connection to the calculator and to all sensors should be carried out as follows while defining switch positions on connectors plug connectors accurately without ap preciable effort Mutual rotation is not permitted after all a sleeve nut should be twisted to prevent possible crumpling bend fracture of contact items pins at partial leng thwise coupling While connecting sensors it is necessary to strictly follow the marks on device cable and flow sensor cable outputs In Table 9 4 marking on communications channels has been adjusted with marking on flow sensor cable outputs for 1 beam flow meters 31 9 4 Cable function Marking on device connected unit cable Marking on flow sensor cable outlets Arrangement FIS1 of channel 1 First downstream FIS2 of channel 1 Second downstream FIS1 of channel 2 FIS3 First downstream FIS2 of channel 2 FIS4 Second downstream In Table 9 5 marking on communications channels of device cable is given to connect temperature sensors pressure transducers and peripheral devices Table 9 5 Cable function Marking on device cable Cable function Marking on device cable connected unit connected unit Structural and basic schemes of device cable are given in the appendix F After meter commissioning and also in cases of repairs verification and adjustments service worker should record corre
56. readings Therefore it is necessary to provide maintenance service of meter see Chapter 12 During each operation cycle 1 2 seconds the water meter carries out self diagnostics of a technical condition by several criteria In case of measurement section fail ures breakage of flow temperature sensor cables absence of the water etc storage of integral parameters water volume and mass and non failure operating time is discontinued and the error message is appeared see Chapter 13 34 11 The operating procedure 11 1 Requirements to the personnel The maintenance personnel should be completely acquainted with present OM 11 2 Structure of the menu of control of the meter Control of the meter a readout and specification of operating mode and meter parame ters is carried out by means of proper menu item selection Items of Menu are displayed in the top row of meter indicator Use of the menu switching of items allows to get the information about measured pa rameters values parameters of the meter and also to carry out meter verification Selection of menu items and changing input setting of parameters is carried out by pressing buttons on the calculator Sequence of operations to select the certain menu item and to input parameter value or to select a parameter from the list is given in the Appen dix D measured quantities meter parameters and commands for meter control are com bined in some sections m
57. riving in thermal pockets which in turn are screwed in bushes lugs of the second type The last ones are welded into the pipeline for contact with the water via a protective thermal pocket Choosing a way of RTD installation in the pipeline it is necessary to consider that to obtain a maximal accuracy of temperature measurement the sensitive element of RTD should be arranged as close as possible to an axis of the pipeline There are three types of RTD with length of 58 80 150 mm type 4 2 3 correspondingly and variants of their an gular installation in accordance with specified requirement irrespective of pipeline diameter The inclination angle and depth of RTD immersing is provided with use of bushes lugs the design of which depends on pipeline DN Recommended variants of RTD depending on FS type are given in tables 9 2 and 9 3 Variants of RTD installation in thermal pockets and without it are given in figures 9 7 9 8 Warning Applying lugs with inclination 45 or 60 it is necessary to provide a contact of water with the bottom part of RTD where thermosensitive element is located The installation place for each RTD included in delivery set is given on the meter s scheme for installation see the appendix B The RTD which measures temperature of the water should be installed close to FS The distance between the RTD and the calculator should not exceed 10 m 26 The RTD can be installed on the upstream or downstream sections
58. rs or RTD should be protected from water influence by means of tight clutch profile sealants or other ways rec ommended by the manufacturer of protective pipes 93 Requirements to FS installation and arrangement FS should be installed into a pipeline FS installation place should be as much as possible moved away from sources of vibra tions jolting electromagnetic interferences electromotors pumps compressors etc No electric voltage relative to a protective contour of grounding in the place where FS should be installed The distance between flow measurement section and an installation place for the calcu lator should be minimal and not exceed 10 m It is possible to increase the distance up to 30 m by agreement with the manufacturer In all cases it is necessary to provide full filling of flow measurement section with wa ter otherwise meters stop functioning and malfunction see chapter 13 of OM would be di agnosed Flow measurement sections can be installed in vertical position however submission of the water thus should be carried out in a direction bottom top for providing FS with water filling Water meter operation in special conditions incomplete filling of FS with the water or polluted water determines its location as resulted in figure 9 1 In this case complete water filling of FS is guaranteed The most polluted pipeline section appears in a place below FS Figure 9 1 To remove water from the bottom part of the p
59. s of the following functional units flow measurement sections with ultrasonic flow sensors FS resistive temperature detectors RTD SVTU 1IB calculator Highest possible number of measurement channels depending on meter s configuration is given in the table 3 1 Table 3 1 Number of channels Ultrasonic flow measurement channel Temperature measurement channel Pressure measurement channel Distinctive functional features of meter configurations and basic functional units are represented in the table 3 2 meters configurations in details are given in the appendix Table 3 2 T Number of FS 2 Number of RTD Additionally the meter can have one or two overpressure transducers further under the text pressure transducers or PT which are used for transformation of the water overpres sure in a proportional electric signal with current from 4 up to 20 mA Metrological performance of pressure transducers PT fits to the individual order 3 6 Meters indicate the results of measurements in SI unit system 3 7 Measured results are displayed on 2 sectional LCD The first section has 8 bit 7 segment indicator with special symbols The measuring da ta are always displayed in this section The second section has one row on the top of the indicator for displaying text infor mation This section is switched on only during operation with keyboard The calculator indicates the following quantities volume mass
60. sensors FIS listed below is applied for FS of DN 32 DN150 FS of DN20 is delivered with installed and sealed flow sensors FIS their dismantling can be done only at manufacturing company 9 4 2 2 After installation of flow measurement section ultrasonic flow sensors should be installed as follows clean internal surfaces of bushes from dust and dirt if necessary for protection of fixing nut and flow sensor materials from diffusion with material of FS it is necessary to grease a bush thread and a lateral cylindrical surface of ultrasonic flow sensors with graphite greasing 15 effective area edge should be cleaned from greasing insert ultrasonic flow sensors in bushes pipe bends of flow measurement section Marking is put on sensor cable outputs So FIS with marks 11 or 21 for the second flow measurement channel should be inserted in first according to flow direction FS bush FIS with marks 12 or 22 for the second flow measurement channel should be inserted in second according to flow direction FS bush at tightening of flow sensor s fixing nut the force put to a wrench should be equal to 40 45 N m and provide a zero gap between FS surface and FIS ring surface outside of its sealing gasket For FIS installed in FS of DN32 the force is 18 20 N m 25 WARNING Ultrasonic flow sensors contain piezoceramic elements and thin walled design ele ments which have the increase
61. sions for flow measurement sections FS sod Z 900 227882 dS e ee s sod Z EL0 CSLPSZ dINS uonejjejsui uonisod Buid y 20 ZE S YOUSIM 10 sod z LOO L6ZZSZ dWS eiddiu Ajfeuonueauoo uMous pue jeues 2 sodz SJOSU S uw seyew Aq SI ejqissod jo el sod QOO S9LEZZ dINS 02 uono s moj SOJON gv 21983 oes 195 B 0 JO Wale DSi arom 080 1 0j JO auljedid MOLT q MOLY 9 5 910 108095 JO 20 9 055944 YOM 9215 4 e JO sa 091 ce Jequunu 54 OC NG 54 Jo suorsu turp 813 pue NO st 64 Overall and connecting dimensions for FS 32 Z00 Z6ZZSL dINS uono s JojOUIMOT sod Z 6IO ZSTVSL ANS 397520 sod Z 00 ZzzF8 dINS WU MAS p
62. sponding information in Table 19 CAUTION IT IS FORBIDDEN 1 To break the procedure of cable connection according to marking in tables 9 4 9 6 2 To swap RTD of temperature sensors TS1 TS2 TS3 see the Appendix B and pres sure sensors PT1 and PT2 3 To increase or shorten the length of cables of ultrasonic flow sensors FIS 4 To apply FS RTD ultrasonic flow sensors FIS and calculators from different deli very sets 5 Cable twisting kinking and sharp bends is not permitted while connecting to FIS CAUTION If it was required to make welding during device commissioning the meter should be switched off and device cable should be disconnected from the calculator housing Otherwise the meter can be damaged 10 Setting up Procedures 10 1 While meters work with additional devices PC these devices should be connected to meters strictly according to maintenance documentation 10 2 For comfortable work with the meter after its purchase and before installation and for check of meter working capacity together with ultrasonic flow sensors it is necessary 1 Assemble a flow meter section with rubber or paronite gasket thickness of 1 2 mm and technological cap at the end face install it vertically fix flow sensors and completely fill FS with water 2 Check up all items in Indication of main parameters mode check up all items in Check mode and also it is obligatory to provide zero setting in Setup mode to 32 c
63. surement section nominal bore flow direction arrow maximum operating pressure Serial numbers of RTD and FS are put on their bodies 6 2 FS marking contains nominal diameter DN and maximal operational overpressure value PN 63 Meter components are sealed up to prevent a non authorized access to adjustment of meter s readings 6 4 The calculator is sealed up by two mastic seals Seals are put on fixing screws lateral covers For mastic fixing sealing cups are provided under screw heads For realization of additional sealing by means of a lead seal the screws with holes in heads on lateral covers are stipulated On customer s demand the replacement of these screws by additional sealing cups is possible Marking of connecting cables are put on labels located near corresponding connectors 7 Packing and marking 7 1 Marking of transport container has specific instructions CAUTIOUSLY FRA GILE PROTECT FROM MOISTURE TOP 7 2 Meter components are packed into the boxes in accordance with drawings of manu facturer 18 In coordination with the customer FS delivery without transport container in custom er s container is possible 8 Safety precautions 8 1 Meter s design meets to safety precautions in accordance with State Standard GOST 12 2 003 8 2 If meter runs together with equipment of 220V power supply then safety require ments for work with electrical installations voltage up to
64. t right digit the cursor 04 00 mA moves to the first digit Ending of editing occurs at pressing Left button After that blinking is stopped and saved parameter value is displayed number with floating point are edited the final number may differ from entered number on one lower order bit It can be explained by way of internal data representation Selection of the variant Selecting menu item for change of parameter from the 3 9 5 Puls out2 _ 2_ list of available values in the top row right side the current parameter value put into symbols _ 1 indicated After pressing Right button these symbols are changed to gt 4 what means the beginning of editing Change of parameter value is provided by Up and Down buttons End of editing is occurred by Left button After that entered value is displayed If parameter shouldn t be edited for example Enter button has been pressed by mistake editing can be interrupted and parameter would be in initial condition For this purpose Right and Left buttons should be pressed simultaneously Notes 1 Holding any button for more than 0 5 sec will result in autorepeat of that button with the rate of 3 times per second If there was no pressing buttons in 2 min the meter switches from selection mode or password entry to Indication of main parameters mode 2 If entered an invalid parameter the meter displays an error message Pressing any button
65. the meter 5 4 Water meters are delivered in following configurations see Appendix I channel water meter 3 2 channel water meter Schemes for sensors connection in different configurations are represented in Appen dix B 5 5 Calculation and storage of average temperature values the meter carries out as arithmetic mean for set period of time hour or day 5 6 The meter carries out flow measurement in the range from 0 54 qmi till qs see table 3 2 For all types of FS measurement errors are provided in a range qi min qs but in sub ranges 0 5qi 9 qi Gmin the mentioned measurement errors are not standardized how ever device working capacity is kept and water mass storing and calculation are carried out While measuring instantaneous flow rate values q lt 0 5 qi min the device indicates zero flow and mass storing m q p isn t carried out 5 7 Measurement of water overpressure is carried out by calculator while measuring the current of electric signal from the pressure transducer Overpressure values MPa measured and displayed by the calculator and current Iin mA on an input of pressure mea suring channel on the calculator input are connected by a following ratio P p I L where and P are pressure values in two points of pressure transducer characteristic for example minimal and maximum pressure I and I are correspondingly currents on the PT outputs in the above spe
66. uration are given in Appendix B 9 2 2 Climatic conditions in a room where meter components are installed should be as follows 1 Ina place for FS and RTD installation ambient temperature can vary from 40 C up to 70 C ambient humidity is up to 95 while temperature is 35 C 2 In a place for calculator installation ambient temperature can vary from 5 C up to 55 C ambient humidity is up to 93 while temperature is 25 C Climatic conditions in a place for installation of the additional equipment should meet the conditions specified in the operational documentation for this equipment 9 2 3 Protection of places for FS and RTD installation from direct ingress of mois ture dirt oils and aggressive liquids should be provided The content of acid and alkali fume in air of premises where meter components are in stalled should be within the limits of sanitary rules For outdoor FS installation it is recommended to provide protection canopy against direct ingress of atmospheric precipitates on ultrasonic flow sensors 20 FS installation in places with possible short term water flooding is allowed while ob serving following protection measures for FS and entrance cables the lining of cables should be made in protective waterproof pipes which are resis tant to influence of an environment including the increased temperature area for connection of protective pipes to ultrasonic flow senso
67. ure measurements 1 4 Enter the mode Zero setting and make setting on both channels simultaneously or separately While setting two groups of digits are displayed on the screen The first one represents the hardware information about zero water velocity This group is stored before following resetting The second group shows number of zero velocity measurement cycles For identical FS types these numbers of measurement cycles usually coincide For different FS types they can be different within the limits of 96 cycles but do not exceed 120 1 5 If zero setting has not been completed positively it is necessary to check up ser viceability of cables quality of connections in sockets and then repeat the previous item 2 For successful zero setting on an object it is necessary to provide reliable water cutting off from both sides of flow measurement section by means of valves qualitative installation and serviceability of flow sensors temperature sensors and al so device entrance cables 67 the level of electromagnetic interference created by surrounding equipment should not exceed a permissible level for the meter Before hydraulic zero setting it is necessary to run the water meter in waterworks on the maximal water flow rate for half an hour then to cut off a valve after flow measurement sec tion to cut off a valve before flow measurement section Hydraulic zero setting can be con ducted in a few minutes after water
68. vice menu The basic working mode of the meter is displaying measuring data from main menu At this time the second section is switched off 5 10 3 FS is a spool piece with flanges and bushes for mounting ultrasonic flow sen sors FS sizes linear and angular have rigid tolerances to achieve required measuring accu racy and stability in operation Sizes are resulted in the table 4 2 and also in the Appendix L 17 5 10 4 RTD are installed in pipelines in special thermometer pockets bushes in cordance with the order on the flow and return pipes of heat exchange system 5 10 5 The length of connecting cables is determined according to a lay out of meter components and can be within the limits from 2 to 10 m max 30 m for ultrasonic flow sensors from 2 to 10 m max 30 m for temperature sensors from 2 to 10 m max 30 m for pressure sensors from 2 to 30 m max 50 m for RS 232 interface Extending cable length up values in squares possible only by additional agreement 6 Marking and sealing 6 1 Meter marking on the calculator contains the following data name and reference designation of water meters trade mark of the manufacturer accuracy class meter s modifications M1 or M2 environmental class serial number date of manufacture two last digits of a year printed before serial number On the indicating device of water meters flow rate limit values On the flow mea
69. wice 13 6 Error group 6 This group includes the errors of pressure measurement the sign x specifies num ber of the channel 6 1 x PSx is below the tolerance Measured pressure is below zero It can be caused by object conditions underpressure or with breakage of certain PS 6 2 x PSx is over the tolerance Measured pressure is above 20 kgf cm It can be explained by the fact of increased pressure on the object and faultiness of PS 6 3 PSx parameters are incorrect Pressure measurement errors don t affect flow rate and temperature measurements In hourly and daily archive printouts there is a value of error appearance duration Terr This value includes errors referred to flow measurement channel and errors which lead to impossibility of flow rate measurement Errors of a flow meter and errors of tempera ture measurement are included here Printouts have field Error types in which presence of certain error type is displayed In total up to four various types of errors can be displayed within an hour and up to 8 types of errors can be displayed within a day The error is displayed on printout only if its duration exceeds 1 minute 43 Errors are displayed by letters of the Latin alphabet The certain letter meets to each type of errors system errors error group 0 B temperature measurement errors error group 1 C flow rate measurement errors error
70. ypes 2 3 4 are given in Figure 3 1 M10x1 5 13 Plug 05 7 9 7 Screw with a hole for sealing 1 pcs screw location is undefined Figure 3 1 10 Table 3 5 Overall and connecting dimensions FS weight for drawings see Appendix L Nominal di Nominal overall and connecting dimensions of FS Weight kg not ameter mm mm more than no fasts DN L D H D dl For FS For flanges 20 270 Pipe G1 O20 2 3 2 7 32 180 M48x2 O32 1 8 2 6 50 180 2122 O50 4 8 22 65 200 2144 263 ll 5 8 2 9 80 210 2155 079 6 9 3 2 100 230 184 95 105 7 8 4 1 125 265 210 119 131 10 6 5 2 150 150 315 236 2 143 156 20 0 7 7 Weight of straight sections with screws Nominal bores D are multiple of 1mm 11 4 1 The meter package contents is represented in the table 4 1 Table 4 1 Name and reference designation 4 Package contents Marking Number Additional information SVTU 11B including SMP 407251 010 Configuration and com pleteness in accordance with the order see items 1 8 1 SVTU 11B Calculator with battery SMP 408843 012 While in delivery the bat tery is switched off 2 Flow measurement section FS with screws for flow sen sors fixing no screws in com plete set for FS 20 FS 150 Marking for FS 20 to FS 15

Water meter SVTU-11B

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