manual - Kobold
Contents
1. Description Dimension Dimension Dimension A B C OVZ 02 1 POM 13 45 68 OVZ 02 2 PMMA 13 45 68 OVZ 04 1 POM 13 7 49 68 OVZ 04 2 PMMA 13 7 49 68 OVZ 15 1 POM 15 65 71 99 OVZ 15 2 PMMA 15 65 73 99 OVZ 30 1 POM 17 6 84 5 119 OVZ 30 2 PMMA 17 6 87 5 119 Aluminum housing ALU Description Dimension Dimension Dimension A B C OVZ 02 3 PMMA 11 5 43 6 68 OVZ 02 4 PSU 11 5 43 6 68 OVZ 02 5 ALU 11 5 41 1 68 OVZ 04 3 PMMA 11 5 47 68 OVZ 04 4 PSU 11 5 47 68 OVZ 04 5 ALU 11 5 44 5 68 OVZ 15 3 PMMA 13 35 71 99 OVZ 15 4 PSU 13 35 71 99 OVZ 15 5 ALU 13 35 66 99 OVZ 30 3 PMMA 15 15 86 119 OVZ 30 4 POM 15 75 86 119 OVZ 30 5 PMMA 15 75 79 5 119 OVZ 4 2013 page 18 OVZ OVZ C3 OVZ Z3 OVZ with compact electronics overview Plastic housing POM Description Dimension Dimension Dimension A B 03 OVZ 02 1 POM 19 525 45 68 OVZ 02 2 PMMA 19 525 45 68 OVZ 04 1 POM 16 95 49 68 OVZ 04 2 PMMA 16 95 49 68 OVZ 15 1 POM 21 125 71 99 OVZ 15 2 PMMA 21 125 73 99 OVZ 30 1 POM 23 2 84 5 119 OVZ 30 2 PMMA 23 2 87 5 119 Aluminum housing ALU Description Dimension Dimension Dimension A B C OVZ 02 3 PMMA 19 525 43 6 68 OVZ 02 4 PSU 19 525 43 6 68 OVZ 02 5 ALU 19 525 41 4 68 OVZ 04 3 PMMA 19 525 47 68 OVZ 04 4 PSU 19 525 47 68 OVZ 04 5 ALU 19 525 44 5 68 OVZ 15 3 PMMA2. y Code y Swichting SP OQ point 1 y E Y Value setting y Switching ER O point 2 h y Value setting a F Y Hysteresis H HE O y Yv Q Value setting Y Y Filter ETE O O 7 Levels y v Value setting Y op YI Contact 1 Do l r Y function O N O e NIC Y y o le Storing Po Frequency L L mi Contact 2 L o Onn y Q no function Q N O nc e Y y NG ere E O O Storing geg y e Changing code rs Q a Value setting y Y Only for sensors with impulse output C3 07 04 Seite 7 FE en eee Compact electronics C34 3 sec Y Code entering O Value setting Switching point TETE j Value setting S Hysteresis EINE O Value setting UDD Code Y Y boy Windowpoint duo O Q Value setting F y Filter ETE O O 7 levels gt Value setting Contact function ex a TEA O 1 A IMAN I N O 57 O i IG 7 i mena i O Q EE P Start current 5 0 O 7sec o End current r O Q 7sec x Value setting F Y Only for sensors with impulse output Seite 8 C3 07 04
3. 24 Voc 20 15 mA PNP open collector max 25 mA connector M12x1 acc to customer specification Analog output L343 L443 Power supply Output Max load Electrical connection Option page 10 24 Voc 20 4 20 mA 3 wire 500 ohm connector M12x1 or DIN 43 650 plug on display AUF 3000 with DIN connector only OVZ 4 2013 OVZ Compact electronics Display 3 digit LED Analog output 4 20 mA adjustable max 500 O Switching outputs 1 2 semiconductor PNP or NPN factory setting Contact operation N C N O programmable Setting via 2 keys Power supply 24 Voc 20 Yo 3 wire Electrical connection connector M12x1 Pointer display with analog output Housing aluminum Indication moving coil instrum 240 indication Power supply 24 Voc 20 Ho Output 4 20 mA 3 wire Max load 250 ohm Electrical connection connector M12x1 11 Pressure loss 11 1 POM plastic housing OVZ 02 OVZ 04 1 0 1 0 0 8 08 8 2 a 0 6 o a e 0 6 9 04 S04 o 5 o 0 2 2 os ao al o O 0 H 2 4 8 B 0 2 q 8 O O L min Q L min OVZ 4 2013 page 11 Pessure Loss A P bar Q L min 11 2 Aluminum housing OVZ 02 e O a oS P o o 3 Pessure Loss A P bar o ho page 12 Pessure Loss A P bar o o o E P D 00 O o M Pessure Loss A P bar E ki Oo O o D 4 6 8 Q L min OVZ 4 2013 OVZ OVZ 30 OVZ
4. 15 2 O Y ky as 6 CG Leg y V sso7 einsse EL 20 30 40 Q L min 10 0 18 20 2 5 H Q Umin page 13 OVZ 4 2013 OVZ 12 Order Codes 12 1 POM plastic housing Example OVZ 02 1 N2 N 1401 Rated measuring range GPM Pulses Model Material Connection Gaskets Electrical transducer for different viscosities Per cover Gallon 10 mms 100 mm s 320 mm s 800 m s G 1 4 Frequency output 08 21 08 21 05 13 0 3 0 53 1546 OVZ 02 NS 1 4 NPT Ms ven 1401 frequency output NPN DIN connector 43650 G2 G 1 4 standard 1302 frequency output NPN cable connection 92 00 1011226 08 241 Oa ab OVZ 04 POM N2 1 4 NPT 1304 frequency output PNP 2 m PVC cable G4 G 1 2 V FKM 1305 frequency output Namur 2 m PVC cable 0 26 6 6 0 26 6 6 0 26 6 6 011 26 199 OVZ 15 2 PMMA N4 1 2 NPT F300 frequency output PNP connector M12x1 E EPDM F3X0 frequency divider adjusted PNP connector M12x1 0 42 10 6 0 42 10 6 0 42 10 6 0 25 6 34 106 OVZ 30 SE E Nu y N5 3 4 NPT Analog output Maximum pressure loss at maximum rated flow is 14 5 PSI L343 4 20 mA output 3 wire M12x1connector 2 Hz Pulse Gallon x Gallon Minute 60 L443 4 20 mA output 3 wire DIN connector Compact electronic C30
5. 3 digit LED plug connection DIN 43 650 3 wire power supply with analog output AUF 3000 Analog output L343 4 20 mA output 3 wire M12x1connector L443 4 20 mA output 3 wire DIN connector Compact electronic C30R LED display 2xopen collector PNP connector M12x1 C30M LED display 2xopen collector NPN connector M12x1 C34P LED display 4 20 mA 1x op coll PNP connector M12x1 C34N LED display 4 20 mA 1xop coll NPN connector M12x1 Pointer indication 240 2340 240 pointer indication 4 20 mA connector M12x1 Please specify flow direction in writing page 14 OVZ 4 2013 OVZ 13 Maintenance The meter requires no maintenance if the measured media is not contaminated Should it be necessary to clean the meter the meter body cover can be easily removed to gain access to and clean the inside of the meter body see Sec 12 Dismantling Installation 14 Dismantling Installation Dismantling e Drain piping Loosen cover screws and remove cover and O ring Mark the position of the gears relative to one another with a pencil Remove the pair of oval gears and clean parts with care do not scratch the sealing faces Caution Do not remove the oval gears position marking Installation e Install the pair of oval gears note identifying markings Rotate gears a number of times they should not disengage e Insert O ring replace meter body cover and fir
6. 21 71 99 OVZ 15 4 PSU 21 71 99 OVZ 15 5 ALU 21 66 99 OVZ 30 3 PMMA 23 025 86 119 OVZ 30 4 POM 23 025 86 119 OVZ 30 5 POM 23 025 79 5 119 OVZ 4 2013 page 19 OVZ 17 Declaration of Conformance We KOBOLD Messring GmbH Hofheim Ts Germany declare under our sole responsibility that the product Oval Gear Flow Meter Model OVZ to which this declaration relates is in conformity with the standards noted below EN 50082 2 EMC General Immunity Requirements a Immunity against electrostatic discharges IEC 0801 2 ESD b Immunity against fast transients IEC 1000 4 BURST Also the following EWG guidelines are fulfilled 2004 108 EC EMC Directive PM pa J Hofheim 16 Jan 2007 H Peters M Wenzel General Manager Proxy Holder page 20 OVZ 4 2013 Operating Instruction Supplement for Compact Electronics Model C30R C30M C34P C34N Ken MW O C3 1 Contents ERR O oni du OE 2 2 NENNE 3 a Electrical E onnecHon AA AHA 3 4 Programming A FE HEPIAN 5 5 Maintenance mrna aeae AN 12 6 Technical Information as Y Yy Y Y DIDO a 12 Manufactured and sold by Kobold Messring GmbH Nordring 22 24 D 65719 Hofheim Tel 49 0 6192 2990 Fax 49 0 6192 23398 E Mail info de kobold com Internet www kobold com Seite 2 C3 07 04 Dies HA 2 Note This programming instruction is only a supplement to the operating instruction for the sen
7. 788 2830 Fax 418 788 4890 E Mail info koboldusa com Website www koboldusa com page 2 OVZ 4 2013 OVZ 2 Note Please read these operating instructions before unpacking and putting the unit into operation Follow the instructions precisely as described herein The devices are only to be used maintained and serviced by someone familiar with these operating instructions and in accordance with local regulations applying to Health 8 Safety and accident prevention When installed into machines the measuring unit should only be used when the machines fulfill the EWG machine guidelines PED 97 23 EG In accordance with Article 3 Paragraph 3 Sound Engineering Practice of the PED 97 23 EC no CE mark Diagram 8 Pipe Group 1 dangerous fluids 3 Regulation Use The model OVZ is an oval gear positive displacement flow meter which can be used to measure and monitor the flow rate of viscous liquid min 10 mm s to max 800 mm s max viscosity 1000 mms upon request Only measure clean non abrasive liquids with adequate lubricating properties and against which the materials used in the sensor case are chemically resistant Ferrite particles may become deposited on the oval gears as they do contain permanent magnets thus causing malfunctions or destruction to the oval gears We recommend our model MFR series magnetic filters if the liquid contains a high concentration of ferrous solids In case of uncertainty please consul
8. 8 Operation Electronics 8 1 Freguency output The instruments are pre adjusted After electrical connection they are ready for operation 8 2 Analog output The instruments are pre adjusted After electrical connection they are ready for operation 8 3 Compact electronics The instruments are pre adjusted After electrical connection they are ready for operation For changing of setting refer to operating manual for compact electronic with freguency output 8 4 Pointer display Z340 The instruments are pre adjusted After electrical connection they are ready for operation page 8 OVZ 4 2013 OVZ 9 Mechanical Operation e To avoid pressure peaks the fluid should flow slowly into the meter Important Pressure peaks arising from a sudden influx of liquid caused by solenoid valves ball valves etc may seriously damage the meter water hammer Ensure that the sensor is always filled with media when in the operating state Important Vent the piping to prevent large air bubbles in the sensor chamber which may cause measuring errors erratic flow reading and can possibly seriously damage the bearings Viscosity range Ambient temperature Medium temperature Max pressure Accuracy Filter mesh size Material O rings Sensor targets Frequency range OVZ 4 2013 10 Technical Information 10 to 800 mm s option 1000 mm s 14 F to 140 F 14 F to 176 F OVZ 1 O
9. C3 Analog output A choosing ra Oi o lt Q Y Storing o A Changing code O O Q Value setting 4 5 Main Menu Items Switching point The switching point is entered in menu item SPo SP1 SP2 A value in the range 000 to 999 may be chosen A decimal point position is also assigned to this value The position of the decimal point can be set after the first second or last position no decimal point If the indicated value exceeds the set switching point then the electronics switches and energizes the LED If the hysteresis is equal to zero and the window point is de activated the electronic switches back whenever the indicated value falls below the switching point Hysteresis After the switching point hysteresis can be entered as a negative value in the menu HYS The default hysteresis value is zero However this can lead to confused switching when the measuring signal fluctuates around the switching point or window point This problem can be cured by increasing the hysteresis The hysteresis is based on the switching point and the window point switching point minus hysteresis window point plus hysteresis Example switching point 100 l min hysteresis 2 5 l min The electronics switches when 100 l min is exceeded and switches back when the flow rate falls below 97 5 l min Window point duo point A window point duo duo point can be defined in addition to the switching point The w
10. Operating Instructions for Oval Gear Flow Meter Model OVZ 0800 NO OVZ 1 Contents 1 ein n CT AA ABA ANG AA canada 2 2 Note N S 3 3 Regulation Use EE 3 4 Operating Principle redcoon 4 5 Instrument Inspection rear RH FFF FEN 4 6 Mechanical Connection EE 5 te Electrical Connection daa ii HR BELA 6 Ll General acatar EE GA 6 7 2 BE ei AA ARF da a 7 Las NN 7 7 4 Compact electronics cccccccnnnnnnccccccccnnoccnnnnnnnnnnnnnnnonononnnnnnononnnnennnos 7 7 5 Pointer Indication with Analog output Z340 8 8 Electronics Operation aeee HYLL RR FL EN 8 8 1 Feed idas 8 8 2 E eebe EE 8 8 3 Compact electronics Laan Ka ka ka Lk 8 8 4 Pointer display Z2340 tan 8 9 Mechanical parana gu adidas eia a ib 10 10 Technical Information eee araaaaanaaaanaa 10 11 Pressure 055 ura odo dia e 11 11 1 POM plastic housing EE 11 MERA 12 12 Order Code Aa AA APA AA AA AA 14 12 1 POM plastic housing eee hente 14 12 2 Aluminum housing ccccocooccccccnnccccccnnnnanancnnccnnnonannn non aa nananana kkk anan 14 E Ree 15 14 Dismantling Installation 00ennnnenneeeeeeeeeee nenn nneeereeeeennnnrnrrrnnrnnneerenrnrnnn 15 15 Recommended spare parts 15 16 DIMENSIONS AA 16 17 Declaration of Conformance secure a 19 Manufactured and sold by KOBOLD Instruments Inc 1801 Parkway View Drive Pittsburgh PA 15205 Tel 412
11. R LED display 2xopen collector PNP connector M12x1 C30M LED display 2xopen collector NPN connector M12x1 C34P LED display 4 20 mA 1x op coll PNP connector M12x1 C34N LED display 4 20 mA 1xop coll NPN connector M12x1 Pointer indication 240 Z340 240 pointer indication 4 20 mA connector M12x1 Please specify flow direction in writing 12 2 Aluminum housing Example OVZ 02 3 N2 N 1401 Rated measuring range GPM Pulses Model Material Connection Gaskets Electrical transducer for different viscosities Per cover Gallon 10 mm s 100 mm s 320 mm s 800 mm s 0 8 2 1 0 8 2 1 0 07 1 74 0 03 0 79 1499 OVZ 02 Frequency output 3 PMMA N NBR 1401 frequency output NPN DIN connector 43650 0 11 2 6 0 11 2 6 0 11 2 64 0 07 1 19 768 OVZ 04 Standard 1302 frequency output NPN cable connection 4 PSU 1304 frequency output PNP 2 m PVC cable 0 26 6 6 0 26 6 6 0 24 6 08 0 13 3 30 176 OVZ 15 V FM 1305 frequency output Namur 2 m PVC cable 5 Alu N4 F300 frequency output PNP connector M12x1 042 106 042 106 0 34 8 85 0 21 5 28 98 OVZ 30 G5 G 3 4 E EPDM F3X0 frequency divider adjusted PNP connector M12x1 N5 3 4 NPT 1 Maximum pressure loss at maximum rated flow is 1 bar 2 Hz Pulse Gallon x Gallon Min 60 Plug on display for Model OVZ L4 with 4 20 mA output and DIN connector Description Order number
12. VZ 2 145 PSI OVZ 3 OVZ 4 232 PSI OVZ 5 580 PSI 12 5 f s max 30 um combination case cover OVZ 1 POM POM OVZ 2 POM PMMA OVZ 3 aluminum PMMA OVZ 4 aluminum PSU OVZ 5 aluminum aluminum oval gears POM axles stainless steel 304 NBR option FKM EPDM oxide ceramic magnets or stainless steel 0 3 9 Hz to 2 57 Hz page 9 OVZ Electronics Frequency output 1401 Power supply Power consumption Pulse output Electrical connection Frequency output 1304 Power supply Power consumption Pulse output Electrical connection Frequency output 1305 Power supply Pulse output Electrical connection Frequency output F300 Power supply Power consumption Pulse output Electrical connection 1302 1303 5 24 Voc typically 10 mA Hall effect sensor NPN open collector max 15 mA connector socket DIN 43650 1401 aluminum adapter box with cable connection 1302 aluminum cover box with circular connector M12x1 1303 18 30 Vpc typically 10 mA PNP asymmetrical open collector max 120 mA 2m PVC cable nominal 8 2 Vpc Namur asymmetrical max approx 3 5 mA typ 0 5 mA 2 m PVC cable 24 Voc 20 10 mA PNP open collector max 25 mA connector M12x1 Frequency output with frequency divider F3X0 Power supply Power consumption Pulse output Electrical connection Divisional factor
13. electrical supply lines are disconnected Meters with connectors solder the ends of the connection cable according to the wiring diagram in the accompanying portable socket outlets e Meters with cable connections connect the connection cable with the supply cable Important If the connections are incorrectly terminated on the device the sensor may be seriously damaged DIN 43650 Plug OVZ 1401 Al housing Pg 9 OVZ 1302 D PE NPN 1 5 V 24Vpc 2 Ri 3 O GND NPN 4 Signal R 24 100K2 R 2 4 100 KQ Al Housing Round plug OVZ 1303 Dre Oesch VIG R NIN Sigal GND R Zas IOK PNP OVZ 1304 NAMUR OVZ 1305 O 34 BDV T 45 15 Voc PNP a O la120mA dk A RL Sr ZS Weg d Signal R 2 4100 ka OVZ 4 2013 page 6 OVZ 7 2 Frequency Output Frequency output OVZ F300 F3x0 E e N VS Signal out 7 3 Analog output L 3 wire OVZ L343 3 wire DIN 43650 plug OVZ L443 Vs Vs Eis nc 2 1 Vs GND S GND Signal 3 4 Out J gt 7 4 Compact electronics C30r C30M C34P C34N see instruction manual supplement for compact electronics with freguency output OVZ 4 2013 page 7 OVZ 7 5 Pointer display Z340 Vs LS nc 2 1 Vs Power Plug M12 GND CND Signal 3 4 Out mA e Plug the portable socket outlet into its mating connector on the meter
14. ey are responsible for damages during transit Scope of delivery Oval gear meter model OVZ Operating Instructions OVZ 4 2013 OVZ 6 Mechanical Connection Before installation Make sure that the actual flow rate corresponds with the measuring range of the meter Make sure that the approved maximum operating pressure and operating temperature of the meter is not exceeded Remove all transport restraints and ensure that there are no pieces of packaging left in the meter Make sure that there are no welding beads metal filings or other pollutants in the piping We strongly recommend that you install a suitable filter in series filtration lt 30 um Installation The OVZ may be installed in any position the liguid may flow in both directions e Inlet and outlet straight piping is not required The connection threads may be sealed with sealing tape etc When installing the meters make sure that the connection threads are not subjected to large pressure or tensile loads We recommend that you mechanically secure the inlet and outlet line approximately 50 mm from the connections If possible you should check that the process connections are sealed and leak free after mechanical installation OVZ 4 2013 page 5 OVZ 7 Electrical Connection 7 1 General Important Make sure that the voltage in your plant correspond with the voltage on the nameplate Make sure that the
15. indow point must be greater than the switching point The measured value can be monitored within a set range by means of the window point and switching point The switching point marks the lower end of the range of values and the window point the upper end C3 07 04 Seite 9 Cd Seite 10 If the window point duo point is lower than or equal to the switching point an error message is displayed Er4 its value is then deleted and thus its function is disabled applies to window point and switching point setting Value setting is similar to switching point setting The window point serves to monitor the measured value within a set range Example Switching point 100 l min window point 150 l min hysteresis 1 l min The electronics switches when 100 l min is exceeded When the measured value stays within the limits 99 l min 100 1 and 151 l min 150 1 then the electronics also remains in the activated switch state LED on Should the measured value exceed 151 l min or drop below 99 l min then the electronics switches back Switching performance The switching performance of the electronics is illustrated in the diagram below The contact closes N O contact when the switching point is exceeded or when the value drops below the window point It opens when the window point plus hysteresis is exceeded or when the value drops below the switching point minus hysteresis The switch state of the electronics is indicated b
16. mly tighten screws crosswise 15 Recommended spare parts 1 0 Pair of oval gears 2 0 NBR FKM or EPDM O ring 3 0 POM PMMA PSU or AL cover Always specify the meter model when ordering spare parts OVZ 4 2013 page 15 OVZ 16 Dimensions OVZ 1401 E G H F mm mm mm 1 2 WIEN 5 OVZ 02 68 68 45 45 43 5 41 OVZ 04 68 68 49 49 47 44 5 OVZ 15 99 99 71 73 71 66 OVZ 30 119 119 84 5 87 5 86 79 5 OVZ l302 OVZ 1303 8 a 31 pa F d G e 2 G H F mm mm mm 1 2 WIEN 5 OVZ 02 68 68 45 45 43 5 41 OVZ 04 68 68 49 49 47 44 5 OVZ 15 99 99 71 73 71 66 OVZ 30 119 119 84 5 87 5 86 79 5 page 16 OVZ 4 2013 OVZ 1304 OVZ 1305 A G 4 V Ka Ja ard T E Dl PNP NAMUR PNP NAMUR A mm B mm A mm B mm G mm H mm OVZ 02 21 5 13 5 16 5 13 5 68 68 OVZ 04 21 14 16 14 68 68 OVZ 15 19 16 14 16 99 99 OVZ 30 17 18 12 18 119 119 OVZ 4 2013 OVZ page 17 OVZ OVZ L3 OVZ F3 B OVZ L443 with AUF 3000 OVZ with frequency or analog output overview Plastic housing POM
17. ng Switching point SPo SP1 SP2 O 999 0 00 Hysteresis HYS 199 0 0 00 Window point duo Switching point 999 de activated Filter Filt 1 2 4 8 16 32 64 Contact type Con Co1 Co2 N O contact no N C nc or frequency Fr no N O contact Start current S C 000 999 000 End current E C 000 999 Upper range value Start current selection SCS 0 0 mA 4 4 mA 4 mA Change code CCo 000 999 000 Lower and upper range values of the flow rate are based on 0 4 20 mA only for sensors with impulse output e g DPE C3 07 04 Seite 5 E eu e 4 3 Value Setting You can select Value setting in the main menu item for example Switching point SPo by pressing the 4 key The structure shown below illustrates the universal routine for changing individual parameters from the main menu item A Y CEO HH ONT IHC E HER 1 Digit setting Y UU UHHUHH TH 0010 0710 2 Digit setting H HAAAY 1 08 I 3 Digit setting Decimal point setting Choosed value storing or new setting to the next main menu item Seite 6 C3 07 04 dis 4 4 Set up Mode Compact electronics C30 Code entering Eod O Value setting HOT
18. sor 3 Electrical Connection 3 1 General Attention Make sure that the voltages in your plant correspond with the instrument voltages e Make sure that the supply wires are de energized e Connect the supply voltage and evaluation of both output signals to the plug connector PINs as shown in section 3 2 and 3 3 e We recommend the use of wires with cross sectional area of min 0 25 mm Attention Incorrect wiring will lead to damage of the unit s electronics C3 07 04 Seite 3 or 3 2 Compact Electronics C30R C30M Switch out VS GND 9 ODO a Switch out 1 3 3 Compact Electronics C34P C34N 0 4 20mA A Vs END a GND A 5 14 switch out I as P Terminals 3 and 5 are linked internally and can therefore be used either for the output signal or the power supply Seite 4 C3 07 04 4 Programming C3 Connect the compact electronics according to the previous wiring diagram and apply the specified voltage The measuring range upper range value is displayed for 3 seconds after switch on 4 1 Key Function Standard mode measuring mode Y pressing 3 sec gt set up mode O switchpoint window point Set up mode 9 Next level O Set value 4 2 Settings Anytime 3 sec or 20 sec no key pressing Standard mode The following values can be changed in the compact electronics Scale range Factory setti
19. t your supplier Material combinations Model OVZ 1 OVZ 2 OVZ 3 OVZ 4 OVZ 5 Case POM Case cover POM PMMA PMMA Axle 304 Stainless steel Rotating sensing Ceramics Hall sensor versions stainless steel inductive pickup versions Standard NBR option FKM or EPDM max operating 145 PSI 145 PSI 232 PSI 232 PSI 580 PSI pressure max medium 176 F emperature max ambient 140 F emperature Filtration requirements max 30 um OVZ 4 2013 page 3 OVZ 4 Operating Principle The OVZ oval gear meter is a positive displacement flow meter The measuring element comprises of two toothed precision oval gears which are driven by the liquid inlet pressure As the liquid rotates the gears a fixed quantity of liquid is transported through the chambers for every turn of the oval gear pair Permanent magnets or stainless steel pins are embedded in the oval gears The rotary gear motion is converted to a pulse signal by electrical sensors externally fitted into the casing The pulse count is a measure of the flow rate The signals are evaluated by downstream electronics optional 5 Instrument Inspection page 4 Instruments are inspected before shipping and sent out in perfect condition Should the damage to a device be visible we recommend a thorough inspection of the delivery packaging In case of damage please inform your parcel service forwarding agent immediately since th
20. ted value lt gt 0 4 mA E C End current indicated value lt gt 20 mA SCS Start current selection 0 20 mA or 4 20 mA The indicated value at which 0 4 mA flow is entered in menu item Start current The indicated value at which 20 mA flow is entered in menu item End current Change Code The change code option CCo secures the unit against unauthorised tempering If the code is different from 000 the user must input the code immediately after entering the adjustment mode C3 07 04 Seite 11 Cd 5 Maintenance Work on the electronics should only be carried out by the supplier otherwise the guarantee is nullified 6 Technical Information Display 3 segment LED Display case stainless steel Analogue output 014 20 mA scalable C34 only Transistor output 1 2 semiconductor PNP or NPN set at the factory Frequency output 1 transistor output vane frequency see sensor Max switching current 300 mA Function N C N O contact programmable Setting with 2 buttons Supply 24 Voc 20 3 wire technology Electrical connection plug connector M12x1 Seite 12 C3 07 04
21. y an LED Display bar C Switching IN AA AAA QU RR LOA Y AO SE Hysteresis Yo miii Tl Na Time t Display bar C Window point nj ge VI EE EE Switching point VE nin WE Hysteresis Jh RR Time t C3 07 04 C3 Filter The filter function Filt generates the sliding average value from the measured values The following values are available see section 6 2 Settings 1 2 4 8 16 32 64 The filter value determines the dynamic behaviour of the indicated value high values result in a slow display response The filter is disabled if a filter value of 1 is selected In other words the indicated value is equal to the unfiltered measured value The integrated step detector responds to a measured value step change greater than approximately 6 25 of the upper range value When a measured value step change is detected the actual measured value is displayed immediately Contact Model The function of the transistor switching output is set in menu item Con Co1 or Co2 The switching function switches from no N O contact to nc N C to Fr frequency Con and Co1 only and for sensors with impulse output and back N O contact means contact closes when switching point is exceeded N C means contact opens when switching point is exceeded Frequency means frequency output synchronized with vane frequency Current output The current output is selected in menu items S C Start current indica
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