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Kobold DON -2/4, Operating Instructions Manual

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Kobold DON -2/4 Operating Instructions Manual Download Page 13

 

 

DON 

DON K36/1222 

 

page 13 

 

 

The individually specified maximum electrical values of the reed switch must never 
be exceeded, even for a moment. Higher switching values may reduce the service 
life or even destroy the contact.  
For capacitive and inductive loads (e.g. via long lines), we recommend the following 
protective circuits: 
 

 

                                    

 

 

Lamp load with series or parallel 

  

 

Protection with a RC suppressor  

resistance to the reed switch. 

  

 

For  a.c. current and inductive load.

 

 

  

 

                                                        

 

 

Protection with a diode  

 

 

 

 

Protection with an inductance or  

for d.c. current and inductive load.   

 

 

Resistance for capacitive load.  

Summary of Contents for DON -2/4

Page 1: ...Operating Instructions for Oval Gear Flow Meter Model DON...

Page 2: ...nance 22 9 1 Disassembly of DON with Pulse meter 23 9 2 Demounting of the electronics mounted on a DON with option Zx or 1A 5A 30 9 3 Spare Parts 30 9 4 Inspection refer Exploded View 30 9 5 Re assemb...

Page 3: ...DON DON K36 1222 page 3 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...

Page 4: ...version you can request it from us free of charge by email info de kobold com in PDF format specifying the relevant invoice number and serial number If you wish the operating instructions can also be...

Page 5: ...x 50 80 16 DON x 55 100 16 DON x 60 100 16 DON 2 4 8 9 Stainless steel version Model DON 2 8 DN Pmax bar diagram 8 group 1 dangerous liquids diagram 9 group 2 no dangerous liquids DON x 04 100 art 4 p...

Page 6: ...ory II DON x 45 3 16 category II DON x 50 3 16 category II DON x 55 4 16 category II DON x 60 4 16 category II DON 2 8 Stainless steel with mechanical totalizer Option M4 Model DON 2 4 8 9 DN Pmax bar...

Page 7: ...ean liquids Stainless Steel flowmeters are suited to most water based products and chemicals and aluminium meters are suitable for fuels fuel oils lubricating liquids It is important to ensure that th...

Page 8: ...tions making oval gear installations simple to install in tight spaces and at an economical price 6 Mechanical Connection 6 1 General Points to verify before meter installation Chemical compatibility...

Page 9: ...it the installation The DON flowmeter accommodates both horizontal and vertical flows It is recommended that for vertical flow installations that the liquid flow up through the meter i e bottom to top...

Page 10: ...olated from the system and serviced as needed System purging is also possible with a by pass arrangement Accommodate all meter ratings and locate the meter on the discharge side of the process pump Fo...

Page 11: ...ed Models from size X05 to X20 incorporate the cable inlet into the electronics cover while models from the X25 size onwards accommodate the cable inlet in the housing cover The connecting cable must...

Page 12: ...ion H0 HE HA The DON reed switch output is a SPST potential free N O 2 wire output This is a passive output so no power is required Note when using the reed switch output the liquid temperature must n...

Page 13: ...ife or even destroy the contact For capacitive and inductive loads e g via long lines we recommend the following protective circuits Lamp load with series or parallel Protection with a RC suppressor r...

Page 14: ...ut is best suited for verified use with a redundant signal or for counting bidirectional currents detecting the current direction Max output current per channel power source or sink 100 mA short circu...

Page 15: ...s are pre configured ex works in connection with the sensor boards Reconfiguration is available on request 7 3 1 For Z1 Z2 Z3 Z5 electronic options reed switch and Hall sensor a Wiring diagram with re...

Page 16: ...or battery operation recommended in connection with external supply 7 3 2 For Z6 Z7 electronics options bipolar Hall sensor The circuitry corresponds to 7 3 1 b 7 3 3 For 1A 5A electronics options Ref...

Page 17: ...DON DON K36 1222 page 17 7 3 4 For Z2 Z8 Z9 electronics options 2 Hall sensors for direction detection...

Page 18: ...ices with L0 LE options are factory calibrated to the respective measurement range end value This setting should only be modified by the manufacturer 7 3 6 Calibration Factor scale or K Factor The DON...

Page 19: ...wiring with electronic unit ZOK Zx 7 4 1 Wiring with ZOK ZxK a Circuit with Hall sensor not for battery operation b Circuit with Reed switch only for battery or 4 20mA loop operation shielded connecti...

Page 20: ...DON page 20 DON K36 1222 7 4 2 Wiring with ZOK ZxP a Circuit with Hall sensor b Circuit with Reed switch shielded connection cable is recommended shield on GND...

Page 21: ...purged of air During long periods of inactivity or after a flushing air may be in the piping Elimination of the air may be achieved by operating the meter at a low flow rate until all the air is elim...

Page 22: ...de energized or removed from the circuit Oval gear positive displacement flowmeters are mechanical by nature A periodic maintenance inspection schedule is suggested for an extended service life Follo...

Page 23: ...re remove the upper meter body assembly 4 being careful not to damage or misplace the O ring 3 or changing the positioning of the oval wheels 2 and or damaging them For DON models DON x04 x10 when dis...

Page 24: ...rs for DON x20 refer exploded view For access to the oval gears remove the 6 upper meter body screws 5 With care remove the upper meter body assembly 4 being careful not to damage or misplace the O ri...

Page 25: ...40 refer exploded view For access to the oval gears remove the 8 upper meter body screws 5 With care remove the upper meter body assembly 4 being careful not to damage or misplace the O ring 3 You can...

Page 26: ...ears for DON x45 DON x60 refer exploded view For access to the oval gears remove the 8 upper body screws 5 With care remove the upper body assembly 4 being careful not to damage or misplace the O ring...

Page 27: ...ove lower housing section 5 Remove seal 4 washer 3 and seal 2 When assembling it is important to ensure the oval gear of 3 is correctly positioned relative to the counting mechanism 8 When mounting th...

Page 28: ...DON page 28 DON K36 1222 DON x25 to x40 DON x45 to x60...

Page 29: ...hanical counter display comprises a 4 digit mechanical totalizer 1 and an 8 digit sum display 2 Depending on the order option the display is calibrated in either litres or gallons The totalizer displa...

Page 30: ...he oval gearbox housing should be loosened 9 3 Spare Parts Please consult your closest KOBOLD Office Internet www kobold com or www koboldusa com 9 4 Inspection refer Exploded View Inspection points w...

Page 31: ...Check for correct seating wear of bearing shafts and bearings by slowly turning the gears by hand Then insert the O ring 3 into the groove of the measuring housing 1 and assemble both parts 1 and 4 F...

Page 32: ...ll not completely rotate freely unless installed precisely 90 from each other Proper placement of the O ring within the groove is necessary for leak free operation After placement items 1 4 will then...

Page 33: ...le tightening torque Model Housing screws Connections and axes Thread Torque Nm Thread Torque Nm x04 x15 M5 6 x20 x25 M6 10 M8 16 x20 x25 M6 20 M8 16 x30 x40 M10 32 M10 32 x45 x60 M10 32 M12 56 Steel...

Page 34: ...perating instructions data sheet approvals and further information via the QR code on the device or via www kobold com 12 Order codes Operating instructions data sheet approvals and further informatio...

Page 35: ...l disposal regulations and environmental regulations Batteries Batteries containing pollutants are marked with a sign consisting of a crossed out garbage can and the chemical symbol Cd Hg Li or Pb of...

Page 36: ...etc Step 3 Guarantee flow rate Flow stopping or a flow rate declining below the usual limit may be attributable to a blocked screen flowmeter rotors which are stuck or damaged a defective pump closed...

Page 37: ...hamber 3 Disruption of the output signal 1 Ground shielding of the signal cable 2 Re lay the cable away from sources of high current 3 Check all electrical connections and wires for the presence of cu...

Page 38: ...the information in these operating instructions as well as the conditions of use and permissible data that appear on the imprints nameplates of the respective products d It must be ensured that only...

Page 39: ...ter must not be heated in Zone 1 above 80 of their ignition temperature without taking special measures f Charging of the medium is not permitted measures by the operator are necessary 16 1 3 Temperat...

Page 40: ...t need to be opened or the equipment needs to be de energized Detailed inspection An inspection in which in addition to the aspects of close up inspection defects such as loose connections which can o...

Page 41: ...f protection constructional safety c control of ignition source b liquid immersion k 16 2 1 General information on explosion protection The electrical connection is made via a plug in a separate induc...

Page 42: ...he electronic options HA BA GA KA DA when used in Zone 1 2 Electrical data Pi 1 W max 80 C ambient temperature Electronics option Use in zone Ui Ii Ci Hall sensor HA BA GA KA DA 1 UiIIB 32 VDC 100 mA...

Page 43: ...OUT DA Sensor Ui 32 Vdc Ii 100 mA Pi 1 W Ci negligible Li negligible GND Flowmeter DON HA ExGuide 19 ATEX 0007 II 3G Ex ic IIC T4 T3 Gc zener barrier Supply P F Z728 PA 20 C Ta 80 C Group IIB zone 1...

Page 44: ...ly Interconnection examples for options 1A to 5A can be found in the instruction manual supplement z2gbm_zok ex_supplement Hazardous Area HA KA BA GA Safe Area OUT HA GA GND Vs OUT DA Sensor GND Flowm...

Page 45: ...nd shutdown g Thermal radiation from third party products components must be taken into account h The flow meter must be protected against inadmissible ingress of liquids and or contamination i Stuck...

Page 46: ...ons must be observed incomplete a Installation and maintenance may only be carried out in an explosion free atmosphere and in compliance with the regulations applicable in the operator s country b Add...

Page 47: ...DON DON K36 1222 page 47 16 2 6 Identification of the flow meter nameplate Basic device label DON example Device label for Ex version intrinsically safe options HA GA DA KA BA example...

Page 48: ...T6 Devices for use in areas with potentially explosive atmospheres outside the mining field but with mine gas accumulation Either aluminium or stainless steel devices may be used in explosion group II...

Page 49: ...ler must ensure that the maximum supply voltage of 28 Vdc and the maximum current of 100 mA are not exceeded This must be ensured by means of suitable external safety elements 16 3 3 Identification of...

Page 50: ...ic are in conformance with 2014 30 EU EMC Directive 2014 34 EU Equipment and Protective systems intended for use in a potentially Explosive Atmospheres Quality Management Production Certificate number...

Page 51: ...following European and national standards and technical regulations Technical rules for hazardous substances TRGS 727 2016 avoidance of ignition hazards due to electrostatic charges Hofheim 08 Feb 20...

Page 52: ...to the restriction of hazardous substances Also the following EC guidelines are fulfilled S I 2016 1105 The Pressure Equipment Safety Regulations 2016 S I 2012 3032 The Restriction of the Use of Cert...

Page 53: ...DON DON K36 1222 page 53 19 Statement of Conformity...

Page 54: ...DON page 54 DON K36 1222...

Page 55: ...DON DON K36 1222 page 55...

Page 56: ...DON page 56 DON K36 1222...

Page 57: ...DON DON K36 1222 page 57...

Page 58: ...DON page 58 DON K36 1222 20 Exd Certificate...

Page 59: ...DON DON K36 1222 page 59...

Page 60: ...DON page 60 DON K36 1222...

Page 61: ...DON DON K36 1222 page 61 21 IECEx Certificate...

Page 62: ...DON page 62 DON K36 1222...

Page 63: ...DON DON K36 1222 page 63...

Page 64: ...DON page 64 DON K36 1222...

Page 65: ...DON DON K36 1222 page 65 22 State of safeness...

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