Vortex flow meters KVM (Manual) - KEM Küppers Elektromechanik
Contents
1. piezo impedance stage active filter 4 0 amplifier pulse transformer transmitter amplifier U e gt c m gt c f U JL prog 5 shift o U fo Jl scan O A enter 2 A v b d mmm power supply U m e MPU c3 c3 gt D Z 9 4 current sink 2 c3 D A converter arithmetic unit Supply Uam y Jl fl Ouf sem 4 41 l GND mm 3 Mii fu pulse output stage pulse transformer 2 4 Outputs 2 4 1 Pulse output low active The KVM may optionally be equipped with a pulse output which can either provide standardised Specifications pulses e g in m or the direct measuring frequency of the flow meter programmable via parameter fi GUT The wiring is as follows pulse counter KVM pulse output 12 30V DC separated pulse input stage pulse input only for supply of the galvanically 6 KVM User s Manual Specifications 2 4 2 Analogue output 4 20 mA The primary current of 4 mA powers the entire electronic of the KVM The measuring signal of up to 16 mA is added resulting in a current consumption of 4 to 20 mA The wiring may be taken from the scheme below KVM 4 20 mA power supply with evaluation 4 20 mA 2 5 Notes on installation Connec2. m TD doped control valves 10xDN 5xDN accouterments 35xDN 5xDN gate partially opened pipe reduction KEM 2 Installation 8 Installation 8 1 KVM series with wafer connections Use the KEM installation kit KEM installation kit 8 hexagon nuts 8 washers A a IE 4 screw bolts 4 centre bushings 8 2 General Ensure a proper distance between both flanges the pipe must not be twisted by the flow meter The internal diameter of the flat seals must be larger than the internal diameter of the tube as otherwise the flow behaviour might be affected by the seal The outer diameter of the flat seal should correspond to the outer diameter of the sensor to ensure the seal is fixed in a centric position by the centre bushings In outdoor applications or use in a wet environment the electrical connector should point down to prevent water from entering the housing via the cable The tubes must be aligned well Misalignment must be kept down to a minimum In high temperature applications the electronic should be in lateral postion pointing down to avoid damage by rising hot air The use of KEM in and outlet sections is recommended to avoid false installation 8 3 Installation in a horizontal position Insert the bottom scre
3. CLEARMEN P CLEAR KEM Programming 5 1 Starting the programming mode Simultaneously press P nd for 3 seconds to start the parameter programming The measuring mode will be interrupted and all outputs take a neutral state The display shows the first pa rameter level DODoOmrcT PRRHIET Pressing tJ you may select from the levels PARAMET operating data and LINEAR linearisation Press P J to select the first parameter of the selected level lst parameter of level lst parameter of level PARATIET operating data LINEAR Linearisation A FACTOR UP oodd Press tJ to scroll the parameters of the level Press to start programming Having started the programming the display shows the current value of the parameter It may be adjusted by entering either numericals or selecting from presets 5 2 Entering numericals When a numerical parameter appears in the display the up right hand digit will flash asking you to enter a value to select the decimal position The present position is flashing to select decimal point each pressing will increase the value by 1 0 1 2 3 9 0 1 to save the adjustment Afterwards the display shows the parameter name again to select the next parameter PJ to start programming to complete the programming mode 5 3 Selecting from presets For some parameters e g flow rate unit you may select from presets Having selected such a parameter yo
4. performance and linearity gt Three preset output values are available via keyboard amp OFF 4 80 ON 400 pe A Press P to select from the presets Via you may turn the current modulation either on or off Press E J to quit the test DKL OFF 120 0N 10 i a OFF 18 5 ON 19 5 5 5 18 LLERRIEPI Restoring defaults This function will restore the defaults erasing all parameter adjustments and counts Having selected the mode via P J the display shows P CLERR To quit press To restore defaults press P Afterwards the E with all operational parameters and counts will be erased During this process the message CLEAR CLEAR will appear in the display KEM 19 Programming 5 6 Level LINEAR Linearisation The mean K factor of the flow meter defines a pulse rate per volume unit which contains an error over the complete measuring range The linearisation allows to compensate for this error by entering 10 linearisation points over the measuring range i e 10 frequencies with their respective errors This will enable you to re duce the measuring error to the repeatability which is usually 0 1 for KEM flow meters Please note the linearisation affect the analogue output and display value only Having selected parameter level 2 press P J to start programming the first frequency
5. vortex frequency creates pressure differences behind the bluff body which will act on the rear part of the bluff body termed vortex detection area A piezo electrical sensor element inside the bluff body detects the resultant force of the vortex shedding and supplies a sinusoidal alternating voltage with a frequency corre sponding to the vortex frequency thus being proportional to the flow velocity The transmitter will convert the sensor signal and finally supply a frequency NAMUR or analogue signal 4 20mA for further processing The bluff body has no bores or welding seams and is therefore particularly tough and resistant to contamination The external construc tion and the precise positioning of the sensor element enable for wide measuring ranges as a linear relation exists between the volume flow and the vortex frequency over a wide range of flow velocities 7 In and Outlet Sections To receive an ideal linearity the flow should be free of interference Therefore keep a minimum length of straight pipe up and downstream do also keep distance from sources of interference gu cum gt 10xDN d 5xDN i 25xDN d 5xDN xe quarter bend Two or several quarter bends in different levels A 3 25xDN 5xDN XT f N i 10xDN d 5xDN NE e Two quarter bends in different levels
6. 00 00 0 000 operation 5 5 5 F CUT Cut off frequency When the flow rate bypasses the minimum flow range of the mA flow meter the output frequency will be outside the linear range of the meter The frequency corresponding to the mE minimum flow range see calibration record is called cut off frequency The analogue output display and limits will not work below this frequency The analogue output takes its offset value the real time values are display 0000 and the limits are out of operation TN The decimal point position for the cut off frequency is fixed to 000 0Hz Press to programme the value for each digit AmA gt f H2 Press gt to move and J to save 0 fscnecn fma 5 5 6 DENSITY Specific gravity of the measuring medium In case a mass related unit was selected for the flow rate you may enter the density of the measuring medium in kg m and the measuring values will be calculated considering the K factor and density The decimal point may be moved via the PJ key Please note when a volumetric unit e g Itr min was selected for the flow rate the KVM will skip the density programming 16 KVM User s Manual Programming 5 5 7 GATE Gate time Measuring time The parameter gate time enables you to adapt the temporary transmission behaviour between frequency and analogue output to your requirements After the gate time has passed the MCM calculates an average frequency for the
7. is calculated by the ratio of the converter resolu tion 12 Bit 4095 and the frequency which corresponds to 20 mA This frequency is calculated considering K factor flow rate unit and the analogue full scale value Example Frequency with analogue full scale of 6 000 m h 234 56 Hz Calculation 4095 234 56 Hz 17 458 i e with each Hz the D A converter will be increased by 17 458 steps The display will show the factor as 11958 4 1 8 Divider in direct transmitter pulses measuring mask 7 The programmed dividing factor in flow rate unit is converted into measuring pulses via the parameter K FACTOR This mask shows the number of transmitter pulses corresponding to one divider pulse Example K factor 835 21 pulses m dividing factor 0 130 m Divider pulses 835 21 Imp n x 0 130 m 108 577 pulses display 109 KEM 11 Measuring mode 4 1 9 K Factor in programmed unit measuring mask 8 The 4 FACTGR defines the calibration factor of the KVM which can be found in the calibration record The K factor is usually stated in pulses volume unit e g 376000 pulses m In this mask you can see the K factor converted in accordance with the programmed flow rate unit The decimal point is fixed 0000 00 Example K factor 376000 Imp m flow rate unit gal h volume unit gal US 376 Imp dm3 x 3 7854 dm gal 1423 31 Imp gal display 1423 37 4 1 10 Programming counter measuring mask 9 This counter regis
8. rate in your application Select the desired unit m or 1 via and confirm with Enter the number for each position via the t and 2 key as described under 5 2 p 15 The decimal point may be moved via the PROG key Press to save KEM 15 Programming 5 5 2 TEMP Temperature of the measuring mediums The transducer pipe and bluff body stretches in accordance with temperature affecting the calibration values of the flow meter The influence is proportional with the difference between process and calibration tempera ture Programming the mean temperature of the measuring medium enables for a compensation concerning the totalizer and analogue output The sensor output signal cannot be influenced internally 5 5 3 FLGU DIf flow rate unit Your selection will apply for the real time value and totals as well as the scaling of the indicated value ana logue output and pulse divider The unit itself is not indicated You may select from the 10 presets which can be scrolled via 4 Press to save and proceed presets L MIN L H AG PIn KG H BRL MIM GAL H LB MIN LB H M N M H operation Example Flow rate unit is l min The real time value is indicated in ltr min and totals in litres Programming of the analogue full scale and pulse divider are effected in ltr min and litres respectively 5 5 4 FLUL DP Flow decimal point The adjustment applies for the indication of real time values decimal point 0000 000 0
9. 17 5 5 8 Gate mem Gate memory p 17 5 5 9 Pulse time p 17 5 5 10 Divider p 17 5 5 11 Analog full scale p 18 5 5 12 A Time Response time of the analogue output p 18 5 5 13 Linear activate linearisation p 18 5 5 14 Key Res reset via keyboard p 18 5 5 15 Dis Mode display mode in the measuring mode p 18 5 5 16 Imp Out signal source of the pulse output p 18 5 5 17 A Test check of the analogue output p 19 5 5 18 Clearmem restoring defaults p 19 5 6 Level Linear Linearisation p 20 Mechanical Installation 6 Vortex principle p 21 7 In and outlet sections p 21 8 Installation p 22 8 3 KVM series with wafers p 22 8 3 1 General p 22 8 3 2 Horizontal installation p 22 8 3 3 Vertical installation p 23 8 4 Pressure and temperature transmitters p 23 8 5 Positioning the electronic p 24 8 5 1 Positioning the housing p 24 8 5 2 Postitioning the display p 24 1 General The electronic of the KVM serves the measurement scaling and transforming of the transmitter frequency Measuring values and operational parameters are shown in the LCD display while operation and parameter settings are effected via the foil touch keyboard Special features of the KVM are fast response time high accuracy as well as simple and safe programming of all parameters The following features are available for evaluation 2 specifications Analogue output with switchable 10 point linearisa
10. KVM User s Manual As of version V 01 01 kK E K ppers Elektromechanik GmbH Quality system certified to DIN EN ISO 9001 KVM User s Manual Contents 1 General p 4 2 Specifications p 4 2 1 Technical data p 4 2 2 Dimensional drawing p 5 2 3 Functional diagram p 6 2 4 Outputs p 6 2 4 1 Pulse output p 6 2 4 2 Analogue output p 7 2 5 Notes on installation p 7 3 Start up p 8 3 1 Error and status messages p 8 3 2 MPU programme flow chart p 9 4 Measuring mode p 10 4 1 Measuring masks p 10 4 1 1 Real time value p 10 4 1 2 Totals p 10 4 1 3 Direct measuring frequency p 11 4 1 4 Gate frequency p 11 4 1 5 Direct transmitter pulses p 11 4 1 6 Digital Analogue value p 11 4 1 7 Analogue out factor p 11 4 1 8 Divider in direct transmitter pulses p 11 4 1 9 K Faktor in programmed unit p 12 4 1 10 Programming counter p 12 5 Programming p 13 5 1 Start the programming mode p 14 5 2 Entering numerical parameters p 14 5 3 Selecting from presets p 14 5 4 Level Paramet operational parameters p 15 5 4 1 Table of parameters p 15 5 4 2 Invalid programming p 15 KEM 5 5 Parameters p 15 5 5 1 K factor of the flow meter p 15 5 5 2 Temp temperature of the measuring medium p 16 5 5 3 Flow Dim flow rate unit p 16 5 5 4 Flow DP decimal point p 16 5 5 5 F Cut cut off frequency p 16 5 5 6 Density p 16 5 5 7 Gate p
11. Linearisation point no Enter 4 digits in Hz no decimal digits Frequency code The programming starts off with the first frequency 0 You may enter the frequency figures using the and gt key Frequencies are to be entered as integer numbers in Hz The figures can be found in the calibra tion record of the flow meter On completion of this parameter you are requested to enter the respective line arity error The display shows the following Enter 2 digits in one decimal digit Brror code Sign of the linearity error The linearisation point no is automatically maintained Use P to select the sign of the error either or Enter the linearity error with one decimal digit in 1 10 via and gt On completion the MCM will automatically go back to the frequency display for programming the next fre quency This process will repeat until a frequency has been programmed as 0 or when 10 linearisation points have been completed last linearisation point no is 9 After saving the last error the KVM goes back to the parameter level error Calibration Diagram Figures for frequencies and errors can be taken from the table of the calibration re cord 20 KVM User s Manual Installation 6 Vortex Principle The medium flows against a trapezoidal bluff body inside the vortex body and separates from the body surface periodically forming vortices cf Karman Vortex Street The vortex shedding
12. e a volume or mass proportional pulse You may now programme the dividing factor with a value that shall correspond to one output pulse Please consider the following when programming The flow rate unit as per FLOU DIf applies e g m h or l min The parameter fiP OUT has to be set to DIVIDER The maxfrequency of the pulse output must not exceed 15 Hz Example An external totaliser shall count integer m Select m min or m h for FLOU D fl Enter 1 000 for the dividing factor and each output pulse will correspond to 1 m The internal totaliser of the KVM is not affected by the dividing factor KEM 17 5 5 11 ANALOG Analogue output full scale Programming The KVM may provide a flow proportional current signal of 4 20 mA You may now enter the real time value which shall correspond to 20 mA flow rate unit according to parameter FLOW Difl For a maximum accuracy this parameter allows for moving the decimal point independent of the adjustment for FLOU DP Press P J to move the decimal point to the desired position Save with 5 5 12 A TIE Response time analogue output The FAU can convert the measuring frequency into an analogue signal based on the incoming frequency fast or based on the calmed frequency slow The calmed frequency is calculated in accordance with the adjustments for parameters GATE TIE Select with and save with 5 5 13 LINEAR Activate linearisation This parameter can be used to
13. either activate or deactivate the 10 point linearisation for real time values analogue output and divider With active linearisation the KVM will correct the measuring frequency according to the programmed error and frequency fig ures The programming of these figures is performed in level LINEAR see page 21 5 5 14 KEU RES Reset via keyboard The totaliser of the KVM may be reset via keyboard when KEY RES is selected here Select with and save with 5 5 15 Dil5 DDE Display mode in the meas mode For the usual measuring mode select 1 55 100 for this presets parameter which includes the real time values mask Q meaning and totals mask V For start up or test purposes the TE57T 00 offers further operation measuring masks For details see page 10 Select with and save with 5 5 16 iffP GUT Signal source pulse output presets DIVIDER The pulse output may either provide the transmitter meaning frequency or volume mass proportional pulses cf parameter DIVIDER Select with and save with operation 18 presets meaning operation presets meaning operation presets meaning operation GUT FAST GUT SLOU LIN OFF LIN ON NO RESET MEU RES A FREQU divided frequency transmitter freq KVM User s Manual Programming 5 5 17 A TEST Check of the analogue output y A TEST The analogue output may be checked with respect to
14. ion is upgraded every 0 5 sec corresponding to approx 2 Hz The internal upgrading and resultant response time of the analogue output and divider depends on the parameters GATE TIE and A TIIE 4 1 2 Totals measuring mask V The integral totaliser of the KVM adds the transmitter pulses standardised in the adjusted flow rate unit FLOU Hifi Thus flow rates over a long period of time may be detected The decimal point position depends on the adjusted flow rate unit The KVM will automatically display totals as accurate as possible Example flow rate unit m h Totals are indicated in m3 e g 12 345 f If the measuring value exceeds the display range it will be assigned accordingly e g 1234 567m will be dis play as 1234 56m If the measuring value is too high to be displayed by fading out digits it will be displayed using exponential notation e g 1234567 89n will be displayed 1 23E06 The totaliser may be reset via key provided that the parameter 4ES RES is programmed accordingly 10 KVM User s Manual Measuring mode The following masks are only available in the test mode of the display cf p 18 4 1 3 Direct measuring frequency measuring mask 2 With start up or service requirements it may be of advantage to indicate the transmitter frequency Select mask 2 pressing The direct measuring frequency is indicated with resolution of 1 100 Hz i e 0 40 HZ 4 1 4 Gate frequency measuring mask 3 With the GATE Tifi
15. lat seals are in a centric position Insert the front screw bolts with 1 centre bush Fix with washers and nuts in accordance with the flange bore tolerances the last 2 centre bushes may not be required Centrically align the flow meter between both flanges Tighten the screws in opposing order consider torque specifications where applicable Re tighten the screws after start up if necessary 8 5 Pressure and temperature transmitters Please consider the following average values for positioning 3 5xDN 4 8xDN KEM 23 Installation 9 Positioning the electronic 9 1 Positioning of the housing 1 Slacken grub screws a 2 Move housing to the desired position b 3 Tighten grub screws 9 2 Positioning the display 1 Unscrew the four fixing screws a 2 Remove the top and turn it in any direction b you like in steps of 90 c Please ensure the supply core is not twisted by more than 270 3 Puton the top and screw in the fixing Screws Subject to change without notice V 01 01 Zi Rev 001 08 06 24 KVM User s Manual
16. measuring interval thereby calming signal fluctuations Periodic disturbances e g pressure fluctuations will be included in the displayed values if the gate time is too short You may avoid this by choosing an appropriate interval Example flow variations with a period of 0 5 seconds require a gate time of 2 0 5 seconds You may select intervals from 507 msec to 3042 msec in steps of 507 msec via the t key Save your selection with presets meaning operation 5 5 8 GATE NEN Gate memory This parameter determines the number of measurements which will be considered for calculating the actual measuring frequency the response time of the measuring results depends on the gate time setting With n gt 0 an average value is calculated considering the last n measurements and the actual measurement This way unique or rare disturbances are prevented from fully affecting the measuring results Adaption of both parameters gate time and memory enables for any temporary behaviour whatever 5 5 9 PULS TIM Pulse time of divider output In order to further process the divider output signal by additonal units preset counters PLC etc 3 different the pulse time adjustments are available presets meaning operation 5 5 10 DIVIDER Dividing factor for the pulse output In order to detect the flow rate with an external counter the KVM may divide the frequency signal of the transmitter in a way the pulse output will generat
17. n error message Press J to restore all defaults and reset the totaliser to 0000 Afterwards the operation software will start the programming mode and parameter settings may be repeated Please note The restoring of defaults may be started manually at any time cf programming of parameter CLEAR 3 1 Error and status messages During the measuring mode of after programming the following messages may appear in the display Message Description CLEAR erasing E data memory P ERROR parameter error in E proceed with OVERFLOW display range exceeded measuring value cannot be indicated 5ET DEF set defaults in M W cut off frequency passed READ DAT copying data to M TEST REG calculating operational parameters WRITE writing data in E 8 KVM User s Manual Start up 3 2 MPU programme flow chart The scheme shows the job stream of the MPU unit and the operation facilities during the measuring mode considering the parameters 4EY RES and DI5 MODE connect power copy data to MPU message RERD DRT type message Kvn software version message ZER 01 01 4 v calculating parameters message TEST REG message OKAY i active measuring mode process analogue output process pulse output display values process totaliser Y display HXX active e g Q 0000 00 m h measuring value cannot be yes indicated message OVERFLOW s es reset of to
18. parameter you may define a measuring period and the frequency measuring result will be a mean value over this period Select mask 3 pressing J wait until the code 2 appears in the display and press again The gate frequency is indicated with a resolution of 1 100 Hz i e 0 00 HZ 4 1 5 Direct transmitter pulses measuring mask 4 This measuring mask shows the unscaled transmitter pulses in the format G20000 The mask may be used for calibrations on site or reference measurements When the number of pulses exceeds the display range of 6 digits this mask will behave like the measuring mask V totals cf p 11 The totaliser may be reset via key provided that the parameter 4ES RES is programmed accordingly 4 1 6 D A value measuring mask 5 This measuring mask shows the decimal value of the D A converter which is derived from the measuring frequency and scaling The D A converter has a resolution of 12 bit corresponding to 4 095 steps of resolution for 16 mA 4 20 mA The display shows 8860 corresponding to 4 mA and 4895 corresponding to 20 mA Example With 6 000 m the analogue output provides 20mA 16 mA modulated 4 mA primary current The display will show 4095 If the actual flow is 3 000 m3 the display will show 2848 corresponding to 8 mA modulated current 4 mA primary current The analogue output provides 12 mA 4 1 7 Analogue out factor measuring mask 6 This mask shows the internal analogue scaling factor which
19. t metal housing with PE Built in devices have to be installed in a metal housing connected with protected earth Observe a low impedance connection of PE and a measurement of the PE resistor according to VDE 0701 Also observe a sufficient shielding for the employed cabinet Keep distance Keep current carrying cables at least 30cm away from the KVM Only shall indicated terminals and contacts be used for power supply Keep mobiles ISM units or switching inductivities like engines or solenoid valves at least 2 metres away from the digital measuring and control electronics Avoid sources of electrostatic charges in the closer environment of the KVM Operators should also consider appropriate clothing and wear of shoes with discharging ability Avoid parallel arrangement of current carrying cables KEM 7 Start up 3 Start up After connecting the power supply the following messages will appear in the display nra D n OT All outputs take a neutral state Parameters in the E are being read KCAL I Type term yp Hel Software version TECT DEF Calculation of all working parameters foot Kew n l i g Ux On successful check of all data the KVM will automatically activate the measuring mode and display the current operational parameters in accordance with the selected measuring mask p ER nnn Parameter are saved twice in different banks of the E In case of deviations TEN a between both parameter banks the display will show a
20. taliser select next display outputs neutral s w es programming parameters KEM Measuring mode 4 Measuring mode The measuring mode allows for indicating either real time values or totals Press tJ to select the desired meas uring mask On the furthest left hand digit your selection is indicated by a for real time value or for totals The way of indication decimal point flow rate unit etc depends on the adjustments in level PARATET In case the special character ij should appear right to the display description or the cut off frequency parameter F CUT has been passed For start up or test purposes the display mode may be changed to test mode by programming the parameter OS fiGGE to TEST PIDD cf p 18 In the test mode the display may indicate up to 10 different measuring masks as listed in the table below 4 1 Measuring masks Meas mask Display Unit Start up Meas mode not displayed OIS MGDE TEST hIDD OIS MGDE flESS G0 es es no no no no no no K factor no es programming counter none y no oe o o o i o0 to amp O 4 1 1 Real time value measuring mask Q The real time value is indicated in accordance with the adjusted flow rate unit FLOU DIfl and decimal point posi tion FLOU DP The calculation is based on the currently measured frequency and the K factor of the flow meter The calculat
21. ters how often the programming mode has been started You may use this to check whether parameters have been changed since the last programming 12 KVM User s Manual 5 Programming press P and for 3 seconds Programming i fIESSP ODE r LINEAR PARANET P P B i InP m oP DODO E K FACTOR p 315000 i EE al y DE 400 PEG TEFP e0 i o ej IP DDOD PEG FLOW OI E fa H Aa d Y e Oy i E 0 0 PRG FLOUL DP E gogg 4 wt oj 2P 9000 te ERU C ee 100 a g Ej j v E Y PE 00 8 DENSITY ion g 5 Y Y Y 3P 0000 ee GATE Ti 507 o y af Oy y R JE 00 kE GATE MEM ec 8 Y el Gy E E 8 PULSTIM cons g oj z REG DIVIDER 001 000 e Y at Oy Y TP ODOD ANALOG 906 00 a l i gf Oj i T 00 PRIN A TIME j OUT SLOU l gf oj y 8P 0000 PO LINEAR 2 LIN OFF i Y af Oy Y BE 400 5 KEU RES NO RESET Y 90 1 gP 000G 2 DIS DDE gt TEST ROD n i gt aj 3E 400 hE IMP OUT RESS ROD o el Oy y P REST ON 00 af oj
22. tion Analogue output two wire galvanically free 4 20 mA resolution 12 bit Pulse output direct measuring frequency or divider pulses 2 1 Technical Data housing ambient temperature medium temperature power supply analogue output frequency pulse output operation and display electrical connection Junction box tute tiet esed utens aluminium blue anodised IP65 as per DIN 40050 d 40 bis 70 C suere esie cd 40 bis 260 C P 12 30 V DC power consumption max 1 5 VA with frequency output Ubmin Rload x 20mA 14 V with analogue output M resolution 12 bit response time 2 20 ms current 4 20mA max 800 Q load linearity 0 05 of final value temperature drift 0 05 each 10 K residual ripple 0 05 of final value oh galvanically free push pull output Uout high level Usupply 0 2V E input of all operational parameters via foil touch keyboard display 8 digit LCD 14 segments ENT 6 pin plug with socket or junction box socket 1 ols UB 2 elm Out 3 5 Com 4 wm A 5 e lA 6 Naa shield KVM User s Manual 2 2 Dimensional drawing mm Typ DN KVM 015 KVM 025 KVM 040 KVM 050 KVM 080 KVM 100 KVM 150 KVM 200 KVM 250 KEM 105 136 164 220 275 330 41 5 103 154 202 253 335 330 340 340 355 370 395 425 440 65 65 65 65 65 65 90 120 140 Specifications 2 3 Functional diagram
23. u may scroll the presets pressing f When the suitable unit appears save with The parameters concerned and their respective presets can be found from page 15 onwards 14 KVM User s Manual Programming 5 4 Level PARATET operational parameters 5 4 1 Table of parameters A detailed description can be found on the following pages Parameter Description Function Unit Default rnp 20 Rud mA FLOOR 0 00 F r 00 DENSITS 1000 BRTE TIR gate time measuring time 1521 PULS TR 20 DIMOER 1000 LINEAR LN OFF DI5 hBBE display mode during measuring mode none nES5 h0BD InP DUT source for the pulse output none DIVIDER 5 4 2 Invalid programming Invalid values or values which are not included in the respective range will be erased after pressing Af terwards the last value will re appear in the display and you repeat programming 5 5 Parameters 5 5 1 K FACTOR K factor of the flow meter Each flow meter is supplied with a calibration record indicating the mean K factor This factor defines the no of pulses per volume unit m over the entire measuring range of the flow meter The linearity error of the mean K factor over the entire measuring range is also shown in the calibration record In addition to the mean K factor and error the calibration record does also include K factors and errors at certain flow rates With constant flow rates you may reach a higher accuracy by selecting the K factor which is the closest to the flow
24. w bolt in one flange Slip on the centre bushings Push the screw bolt through the second flange Fix the screw bolt with washers and nuts Insert the vortex meter electronic in a lateral position at high temperatures Insert the seals on both sides take care of a centric position of seals and flow metrer Fix the flow meter by slightly tightening the screws Insert the top screw bolts Fix the top screw bolts with washers and screws Tighten the screws in opposing order consider torque specifications where applicable Re tighten the screws after start up if necessary 22 KVM User s Manual Installation 8 4 Installation in a vertical position Insert 2 screw bolts each with 2 centre bushes Fix the top and bottom screw bolts with nuts and washers Insert the flow meter with both flat seals The flow meter must sit close to the top and bottom centre bushings Make sure the flow meter and the flat seals are in a centric position Insert both front screw bolts Fix them with washers and nuts Tighten the screws in opposing order consider torque specifications where applicable Re tighten the screws after start up if necessary Alternatively with well aligned tubes Insert 2 screw bolts each with 1 centre bush Fix the top and bottom screw bolts with nuts and washers Insert the flow meter with both flat seals The flow meter must sit close to the top and bottom centre bushings Make sure the flow meter and the f
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