Bulk water meter ZF-series - Raminex

The multifunctional counter with six bignumber rollers and two pointers is easily read andpresents itself in a modern, appealing design. Thecounter can be equipped with plastic or mineral glass.The anti-condensation coating (nano-coating)guarantees optimal readability of the counter. Thecounter can also be adjusted to the desired positionand thus makes simple and correct reading of thedisplay possible.The encapsulated, evacuated counter sealed withan O-ring is protected against flooding and can beequipped with an additional dry cartridge onrequest.Steel sealing cap: protects the window against dirtand damage. A plastic sealing cap which can berotated by 360° is also available on request. Theplastic sealing cap can be adjusted according to themounting position and mounting conditions of themeter.* Double-reed version in development.”The sky is the limit” in regard to the pulse outputoptions: Reed*, Opto and Namur type pulsers canbe fit directly in WPH counters up to DN 500. A keyfeature of this meter is that these pulsers can beinstalled without disturbing the calibration seal. Afield installer can fit the pulser without the need toreseal the meter. The pulser can also be secured withan additional lead seal. This range of products can betied into the CHEKKER ® system with the CHEKKER ®pulse counter module visio.An electronic counter is currently under development.This module will fit directly into the meter replacingthe mechanical gear box and rollers. It will provideunprecedented levels of accuracy and extensivecommunication and data logging facilities.A host of technical solutions that handle the outputpulses from the meter and process them areavailable.WPH-ZFCounterThe counter is a completely newdevelopment and meets allrequirements for a moderncounter of today.Head loss curveError curveWPH-K-ZFApprovalsDN 40Approvalhas beenapplied for.DN 50B99325.13 DN 65B00325.16 DN 80B99325.09DN 100B99325.10 DN 125B00325.15 DN 150B99325.12 DN 200B00325.143

Bulk Water Meter ZF-seriesWPH-ZFTechnical dataNominal diameter DN mm 40 50 65 80 100 125Nominal flow rate Qn m³/h 15 15 25 40 60 100Maximum flow rate (short-term) Qmax m³/h 60 90 120 150 250 300Maximum flow rate (durable) m³/h 30 45 60 90 125 170Transitional flow rate Qt m³/h 0,9 0,9 1,2 6 6 8Minimum flow rate Qmin m³/h 0,35 0,35 0,45 0,8 1,5 3Flow rate at 0.1 bar head loss m³/h 20 30 50 70 100 150Pressure loss at Qmax bar 0,2 0,1 0,1 0,2 0,2 0,2Maximum water temperature °C 50Maximum working pressure bar 16Maximum dial indication m 3 9.999.999Minimum dial indication l 0,2Metrological classBNominal diameter DN mm 150 200 250 300 400 500Nominal flow rate Qn m³/h 150 250 400 600 1000 1500Maximum flow rate (short-term) Qmax m³/h 350 650 1200 1500 2500 4000Maximum flow rate (durable) m³/h 250 325 600 700 1250 2000Transitional flow rate Qt m³/h 12 12 20 50 100 200Minimum flow rate Qmin m³/h 3,5 6,5 12 18 30 45Flow rate at 0.1 bar head loss m³/h 200 650 1000 1500 2500 4000Pressure loss at Qmax bar 0,2 0,05 0,05 0,05 0,05 0,05Maximum water temperature °C 50Maximum working pressure bar 16Maximum dial indication m 3 99.999.999 999.999.999Minimum dial indication l 20 200Metrological classB* Approval has been applied for.InstallationPipelinehorizontalverticaldiagonalHead of meterupwardsaside4

Display for DN 40 and DN 125WPH-ZFDisplaysreed 2 position 1000 l/pNamur opto sensor positionreed 1 position 100 l/pDisplay for DN 150 to DN 300reed 2 position 10 m 3 /pNominal diameterDNLowest scalevalue40 / 125 mm 0,2 l150 / 300 mm 20 l400 / 500 mm 200 lNamur opto sensor positionreed 1 position 1000 l/pDisplay for DN 400 and DN 500reed 2 position 100 m 3 /pNamur opto sensor positionreed 1 position 10 m 3 /pNominal diameter DN mm 40 50 65 80 100 125Nominal flow Qn m³/h 15 15 25 40 60 100Length L mm 200 200 200 225 250 250Height H mm 206 200 208 255 275 290Flange Ø D mm 150 165 185 200 220 250Weight kg 9,8 10,6 11,6 15,4 17,8 21,6DimensionsNominal diameter DN mm 150 200 250 300 400 500Nominal flow Qn m³/h 150 250 400 600 1000 1500Length L mm 300 350 450 500 600 800Height H mm 305 375 470 495 635 740Flange Ø D mm 285 340 395 445 565 670Weight kg 31,5 46 94 114 199 3405

Bulk Water Meter ZF-seriesSystem CHEKKER ® ZF-V seriesElectronic Woltman Meter visioMeter electronics for 12 yearsCheck number for 100% correctconsumption valuesProgrammable downtime-detectionProgrammable leak-detectionS.R.D. (Specified Reading Date)can be reprogrammed on-siteCompact- and split-models forideal meter readingSystem CHEKKER ®100% tested values for billing byreading with check numberZF-V seriesCHEKKER ® pulse counter module visioCompact version6The system CHEKKER ® consists of the followingcomponents: meter technology with check number for allmedia checking softwareand improves the quality of your reading data.All pulse-applicable Woltman meters from the ZFseries can be quickly and easily upgraded with theCHEKKER ® pulse counter module visio to electronicbilling meters of the System CHEKKER ® with checknumber.The electronic module visio works with the newestgeneration of microprocessor-controlled pulsecounter with a running time of 12 2 years. Theinternal memory saves all important data at regularintervals.In the reading mode the consumption value as wellas the check number is displayed by simply pushinga button.After pushing the button:Automatic switch after 4 seconds:Total consumption valueSegment testCheck numberand billing valueAutomatic reset of the display after 30 secondsThe reading value can be checked for accuracy bythe check number. Digits which are mixed up andincorrectly collected reading values are recognizedfor sure. Only 100% tested reading values are usedfor billing.For further detailed information on the CHEKKER ®System and the CHEKKER ® Meter Technology pleaserequest our brochure „System CHEKKER ® “.The following data can be accessed in the service-mode: S.R.D. (Specified Reading Date) monthly values calibration validity manipulation error statusIn addition, the devices can be programmed in thefactory to recognize special operating situations:WPH-K-ZF-V-N DN 50Downtime-detection: meter failures areidentified by the programmable downtimedetector and are encoded in the checknumber.Leak-detection: with the programmable leakdetector leaks in the plumbing are identifiedand encoded in the check number.The visio module is available as compact- and splitversion.The compact device is clipped directly ontothe counter; the split version is fastened with a cableand for an ideal reading, should be installed with awall mounting device.

WS-ZFRobust for extreme applicationsVery low pressure loss in spite ofthe integrated filterAlso available as a volumetric measuring unit forenergy metersEasy maintenance due to removablemeasuring insert.Regulation in measuring insert (not in body).Anti-condensation coating for optimalreadability of counter.Suitable for fluctuating flow rates due to widemeasuring range; typical uses are e.g. inschools, holiday complexes and industrial plantsLow start-up and high sensitivity.Integrated stainless steel filter.Long-life bearings due to special wearresistancematerials.Dry dial six-roller counter with big rollernumbers.Pinion bearing: The pinion connecting turbineand counter runs on bearings with sapphire(corundum) on both ends.Magnet protection against interference fromexternal magnetic fields.Low pressure loss.WS-K-ZF-I-N DN 100 Metrological properties according to ISO 4064class B, but better than class B. Maximum corrosion protection by epoxypowder coating. Prepared for Reed switch*, Opto and Namurdevices. Optional equipment with electronic pulsecounter module. WS for cold water up to 30°C (safe up to 50°C),for warm water up to 90°C (safe up to 120°C),for hot water up to 130°C and as volumemeasuring unit for energy meters. Operating pressure up to PN 16. High pressure version up to PN 25. For horizontal installation. Available as CHEKKER ® version or subsequentupgrade possible with the CHEKKER ® pulsecounter module visio. EEC approval for ISO and DIN length class B forcold water. Other national approvals.* Double-Reed version in development.Error curve7

Bulk Water Meter ZF-seriesWS-ZFHead loss curveDisplayreed 2 position 1000 l/pNamur opto sensor positionreed 1 position 100 l/pTechnical dataDimensionsNominal diameter DN mm 50 65 80 100 150Nominal flow rate Qn m³/h 15 25 40 60 150Maximum flow rate (short-term) Qmax m³/h 30 70 110 180 350Maximum flow rate (durable) m³/h 20 40 55 90 200Transitional flow rate Qt m³/h 1 3 3 5 10Minimum flow rate Qmin m³/h 0,15 0,2 0,2 0,3 0,8Maximum working pressure bar 16Flow rate at 0.1 bar head loss m³/h 20 35 40 70 150Pressure loss at Qmax bar 0,2 0,2 0,2 0,3 0,6Maximum dial indication m 3 99.999.999,99Minimum dial indication m 3 0,2Metrological classNominal diameter DN mm 50 65 80 100 150Length L mm 270/300 300 300/350/370 350/360/370 500Height H mm 228 238 290 306 435Outer dia D mm 165 185 200 220 285Bolt circle D1 mm 125 145 160 180 240Connecting bolt numberHole diameterpc.mmWeight kg 14 23 29 31 784Ø18Better than ISO 4064 class B8(4)Ø188Ø188Ø228

*PN 10/16-4: dimension of the hexagonal hole= 4 mm.PN 10/16-5: dimension of the hexagonal hole= 5 mm.The filter consists of a cast body, a lid plate fixedwith screws and a removable strainer made ofstainless steel. No soiling of the pipe network by foreign matter.Additional protection of the water meter‘smechanism by premounting. Simple maintenance by easy cleaning of thestrainer after removal of the lid plate. Attention should be paid to the flow directionof the water during the installation. Operating pressure 16 bar. Applicable for cold water up to 50 °C (PN 10/16-4 or PN 10/16-5)* and hot water bis 130° C(PN 10/16-4 or PN 10/16-5)*. Version with bar magnet to filter magnetitesaway from water also available. Also available for high pressure version onrequest.FilterFWZ DN 50 - 250Magnet filter for volume measuringunit of energy metersWMF DN 50 - 250Headloss curvesPN 10-4 and PN 16-4PN 10-5 and PN 16-5Nominal diameter DN mm 50 65 80 100 125 150 200 250Length L mm 200 200 225 250 250 300 350 450Height H mm 176 193 224 234 245 277,5 363 395Flange connected D mm 165 185 200 220 250 285 340 395Bolt circle D1 mm 125 145 160 180 210 240 295 350ScrewsHole diameterpc.mm4Ø194Ø19Weight kg 12,4 13,8 15,1 17,7 26,9 35,8 58,5 958Ø198Ø198Ø198Ø238Ø2312Ø23Technical data9

Bulk Water Meter ZF-seriesCombined honeycomb rectifierPerfect measuring results in Woltman metersrequire that the water strikes the meter at a steadyflow.In order to prevent excessive turbulence in flow,stabilizing sections in front of the meters areprescribed. This task is also carried out by the flowstraighteners which are fitted in front of and behindthe meter.Should, however, an irregular rate of flow occurin the pipe cross section, other or additional measuresmust be taken so that the result ofthe measurement is not falsified. This problemoccurs if a meter is installed immediately after avalve bend in the pipe or if several pumps feed onecollecting pipe.A honeycomb rectifier solves this problem. 32square axial-flow channels destroy the angularmomentum of the water inside the pipeline.Located at the inlet of the honeycomb sectionis a perforated disc whose cross section isapproximately half the size of the cross sectionof the pipe. The inflowing water is damped and thesquare channels which follow destroy any angularmomentum.The head loss caused by the honeycomb rectifier ata flow rate of 3 m/sec is approximately 0.1 bar. Themetal flange on the perforated disc is usedto secure the rectifier between two flanges with thehoneycomb section pointing in the direction of flow.A length of blank pipe at least 5 pipe diametersshould be fitted in front of the meter.If the rectifier is positioned at a short distance infront of the meter then minus-range deviationsin measurements can occur.The honeycomb rectifier is made of stainless steel.DN 50 - 500 mmScanning sensorsApplicable with all WPH-ZF and WS-ZFOpto sensor IG-IR Reed sensor KG-R Namur sensor IG-INPulse ratesPulserPulse valenceDN 40 .. 125Pulse valenceDN 150 .. 300Pulse valenceDN 400 .. 500Reed sensor KG-R 0,1 and 1 m³ 1 and 10 m³ 10 and 100 m³Opto sensor IG-IR 0,001 m³ 0,01 m³ 0,1 m³Namur sensor IG-IN 0,001 m³ 0,01 m³ 0,1 m³10

PuIse counter moduleIZM 208The IZM 208 pulse counter module can take theinputs of up to 3 pulse output meters and integratethem into a bus system.King-sized connectors, mural or DIN rail mounting aswell as several optional or retrofittable functionmodules allow the user to solve every kind of meteringdemand.Key features include: Flow rate averaged over the last 30 minutes.Even if pulses are 30 minutes apart, the algorithmwill continue to deliver an accurateaveraged flow rate. Data logging with user configurable storage ofsamples to maximise capacity. Using plug-inmodularity, memory can be easily upgraded. The pulse streams are increased with the builtin230 V power supply module. Due to this,interferences are minimized and impulse pipescan be longer. All devices are supplied with an opticalinterface for mobile data logging along withprogramming of the specific parameters. The option of RS232, ZR-Bus, M-BUS, radiomodule 433 MHz or 868 MHz - all from the oneunit. Datamanagement with ZENNER softwares.The pulse counter module can work together with allsizes of meters.A non-volatile memory captures and saves at regularintervals all essential data. Operating failures anderrors are detected automatically and can be shownon the local display with date, duration and type oferror.Furthermore, the integrated data logger allowsaccess to further stored data which is not accessibleon the display. Due to the integrated clock andcalendar, specified reading date (S.R.D.) data arealso no problem for our IZM 208 pulse countermodule. The volumes of the meters are written intothe memory on the date specified by the user yearafter year and can be read or transmitted remotely.As well as displaying consumption data on the localregister, the IZM 208 also makes this data availableon the bus when requested. Low-cost pulse outputmeters can be used to establish an M-Bus networkwithout the high cost normally associated with M-Buscompatible meters.The robust plastic body of the pulse counter module,the circumferential o-ring nut and the PG-fitting withplastic segment insets provide ideal protection for theelectronic system against water. If fittings are notused, standard mounted hole plugs or hard plasticplugs prevent dirt and moisture from entering.Dimensions11

Bulk Water Meter ZF-seriesPulse counter moduleCommunication moduleRetrofittable for 230 volt power supplyStandard optical interfaceMenus can be configuredMore flexible user-specific menu structureInvisible service mode for end-userThe pulse counter module IZM 208 can be orderedwith additional modules. Subsequent retrofitting ofthe modules is also possible. In this connection, thecombinations shown here are possible. The sequenceof the retrofittable modules is though thepredetermined raster of the mounting drill holesuncritical, however only one interface may bemounted in each case.The following modules can be ordered or areretrofittable:Supply module:230Vsupplymodule230 Vinterface module(M-Bus, RS-232,ZR-Bus)memorymoduleplatinumbase3 point directDIN rail mountingInterface module: M-BusRS 232ZR-BusRadio wave module 433 MHzRadio wave module 868 MHzMemory module LP:8K32K96K3 x PG93 x PG7IP68IP65Mounting solutionsThe pulse counter module allows 3 starting points fora reliable wall installation. The upper wall hookresp. the lateral long holes are designed for screwswith a shaft diameter of up to 5 mm.The dimensions of the body 130 x 175 x 55 mm andthe alignment of the connection points also allows aconvenient connection also onto e-countermounting fields.A Error DIN display rail (only installation if present) is also possible in switchcabinets with our snap-spring mounting set SFH-M4 which is also available as an accessory (order no.65L 094).Main volume meterDisplay sequencesMain menuLevel 1Additional volume 1Additional volume 2Error display (only if present)Segment test (flashing)Main volume meterFlow rateAdditional volume 1Operating hoursTechnical dataAdditional volume 2Microprocessor energy indicatorAmbient temperature Segment test (flashing)5°C ... 50°CDisplay8-digit, floating decimal pointMeasuring unitsFlow ratem³ / lPower supplybuilt-in 6 year battery (3V or 3.6 V) or transformerCurrent on contact impulse~1 µA / 1 mA by 230 V power supplyIP ratingOperating hoursIP 65, corresponding to DIN 4005012

Data transmissionPC, Windows CE ® poweredPocket PCs or PSION workabout ® ,modem, radioMeters are being increasingly read electronically overa communications network. In the future, all meterswill be read automatically. ZENNER has thetechnology today to achieve this goal in the future.For the W-ZF meter series, 4 systems of meterreading are available.1. “On-Site” reading where the reading is takenat or near the location of the meter. This canbe performed using our hand-held terminal(Psion, Ipaq) or using a PC.2. Automated meter reading where the meter isread fully automatic using modems.3. Radio reading where radio waves are used totransmit the read-out from the meter, using forexample the unidirectional compact radiowave module RDM 802 for reading Woltmanmeters installed in shafts.4. Remote reading by a battery-operated GSMmodule for meters when access to the meterlocation is difficult. Data transmission via GSMmodem in predetermined, programmableintervals.ZENNER recognizes that hardware is only a smallpart of a meter reading system. In some regards,good software is the most significant component of ameter reading system. Therefore ZENNER hasdeveloped software with the aim of making thetransition from meter reading to the billing system assmooth as possible. Our software developmentconcept is an open and modular softwareconcept called Global Meter Management(GMM).ZENNER’s approach to data processing can besummarised as follows: Suitable instrument selectionSeamless data utilisation from meter toapplicationPortable softwareOpen interfaceSimple operationInexpensive and efficientWindows CE ® powered Pocket PCwith software package GMM(Global Meter Management)RDM 802-PK-LP13

Bulk Water Meter ZF-seriesOrdering data for WPH metersModelNominal diameterm³/hDNLengthl / pulseTypeOrder-No.WPH-K-ZF-Nstandard versionpulser can be retrofittedavailable up to DN 500WPH-W-ZF-Nstandard versionpulser can be retrofittedavailable up to DN 200WPH-K-ZF-I-Npulse version completewith pulser KG-ZR,available up to DN 500WPH-W-ZF-I-Npulse version completewith pulser KG-ZR,available up to DN 20014WPH-K-ZF-NPN 10/1630°CWPH-W-ZF-NPN 10/1690°CWPH-K-ZF-I-NPN 10/1630°CWPH-W-ZF-I-NPN10/1690°CWPH-K-ZF-N...15 40 200 mm can be chosen ...030200040FL 12B 16915 50 200 mm can be chosen ...030200050FL 12B 05525 65 200 mm can be chosen ...050200065FL 12B 05640 80 225 mm can be chosen ...080225080FL 12B 05760 100 250 mm can be chosen ...120250100FL 12B 058100 125 250 mm can be chosen ...200250125FL 12B 103150 150 300 mm can be chosen ...300300150FL 12B 059250 200 350 mm can be chosen ...500350200FL 12B 060400 250 450 mm 10000 ...800450250FL 12B 061600 300 500 mm 10000 ...1200500300FL 12B 1351000 400 600 mm 10000 ...2000600400FL 12B 1361500 500 800 mm 10000 ...3000800500FL 12B 137WPH-W-ZF-N...15 50 200 mm can be chosen ...030200050FL 12B 07125 65 200 mm can be chosen ...050200065FL 12B 15840 80 225 mm can be chosen ...080225080FL 12B 15960 100 250 mm can be chosen ...120250100FL 12B 160100 125 250 mm can be chosen ...200250125FL 12B 161150 150 300 mm can be chosen ...300300150FL 12B 162250 200 350 mm can be chosen ...500350200FL 12B 163WPH-K-ZF-I-N...15 40 200 mm 1000 ...030200040FL 12B 18115 50 200 mm 1000 ...030200050FL 12B 06225 65 200 mm 1000 ...050200065FL 12B 13840 80 225 mm 1000 ...080225080FL 12B 13960 100 250 mm 1000 ...120250100FL 12B 140100 125 250 mm 1000 ...200250125FL 12B 141150 150 300 mm 10000 ...300300150FL 12B 142250 200 350 mm 10000 ...500350200FL 12B 143400 250 450 mm 10000 ...800450250FL 12B 144600 300 500 mm 10000 ...1200500300FL 12B 1451000 400 600 mm 10000 ...2000600400FL 12B 1461500 500 800 mm 10000 ...3000800500FL 12B 147WPH-W-ZF-I-N...15 50 200 mm 1000 ...030200050FL 12B 18225 65 200 mm 1000 ...050200065FL 12B 18340 80 225 mm 1000 ...080225080FL 12B 18460 100 250 mm 1000 ...120250100FL 12B 185100 125 250 mm 1000 ...200250125FL 12B 186150 150 300 mm 10000 ...300300150FL 12B 187250 200 350 mm 10000 ...500350200FL 12B 188

Ordering data for WS metersModelNominal diameterm³/hDNLengthl / pulseTypeOrder-No.WS-K-ZF-NPN 10/1630°CWS-K-ZF-N...15 50 270 mm can be chosen ...030270050FL 11B 02525 65 300 mm can be chosen ...050300065FL 11B 02640 80 300 mm can be chosen ...080300080FL 11B 02760 100 360 mm can be chosen ...120360100FL 11B 028150 150 500 mm can be chosen ...300500150FL 11B 029WS-K-ZF-Nstandard versionpulser can be retrofittedWS-W-ZF-NPN 10/1690°CWS-W-ZF-N...15 50 270 mm can be chosen ...030270050FL 11B 03625 65 300 mm can be chosen ...050300065FL 11B 09840 80 300 mm can be chosen ...080300080FL 11B 07860 100 360 mm can be chosen ...120360100FL 11B 079150 150 500 mm can be chosen ...300500150FL 11B 080WS-W-ZF-Nstandard versionpulser can be retrofittedWS-K-ZF-I-NPN 10/1630°CWS-K-ZF-I-N...15 50 270 mm 1000 ...030270050FL 11B 03025 65 300 mm 1000 ...050300065FL 11B 06440 80 300 mm 1000 ...080300080FL 11B 06560 100 360 mm 1000 ...120360100FL 11B 066150 150 500 mm 10000 ...300500150FL 11B 067WS-K-ZF-I-Npulse version complete with pulser KG-ZR,available up to DN 150WS-W-ZF-I-NPN 10/1690°CWS-W-ZF-I-N...15 50 270 mm 1000 ...030270050FL 11B 09925 65 300 mm 1000 ...050300065FL 11B 10040 80 300 mm 1000 ...080300080FL 11B 10160 100 360 mm 1000 ...120360100FL 11B 102150 150 500 mm 10000 ...300500150FL 11B 103WS-W-ZF-I-Npulse version complete with pulser KG-ZR,available up to DN 150All WS meters are available in length according to ISO standard15

Bulk Water Meter ZF-seriesOrdering data for accessoriesModel DescriptionTypeOrder No.Pulse counter moduleIZM 208(All pulse counter moduls are alsoavailable with mains connection)Standard IZM208-ST 50W276for M-Bus IZM208-BM 50W274for ZR-Bus IZM208-BZ 50W177for RS232 IZM208-BR 50W275Radio wave module RDM 802(version with cable)for Woltman meters RDM 802-PK-LP 65L150ModelPacking unit Pcs.DNLengthTypeOrder No.Reed sensor for type ZF-N 1 KG-R 65B 006Opto sensor for type ZF-N 1 IG-IR 65B 008Namur sensor for type ZF-N 1 IG-IN 65B 00950 WGR-050 65B 01065 WGR-065 65B 011Combinedhoneycombrectifier180 WGR-080 65B 012100 WGR-100 65B 013125 WGR-125 65B 014150 WGR-150 65B 015200 WGR-200 65B 018Filter forWoltman meterfor cold water 30° C150 PN 10-4 200 FWZ-050 65B 01965 PN 10-4 200 FWZ-065 65B 03480 PN 10-4 225 FWZ-080 65B 020100 PN 10-4 250 FWZ-100 65B 021125 PN 10-4 250 FWZ-125 65B 035150 PN 10-4 300 FWZ-150 65B 031200 PN 10-4 350 FWZ-200 65B 032250 PN 10-4 450 FWZ-250 65B 037Magnetfilter forWoltman meterfor hot waterup to 150° C150 PN 10-4 200 WMF-050 65B 04165 PN 10-4 200 WMF-065 65B 04280 PN 10-4 225 WMF-080 65B 044100 PN 10-4 250 WMF-100 65B 045125 PN 10-4 250 WMF-125 65B 046150 PN 10-4 300 WMF-150 65B 047200 PN 10-4 350 WMF-200 65B 048250 PN 10-4 450 WMF-250 65B 049For further detailed information on the CHEKKER ® system request our brochure „ System CHEKKER ® “.N°97A006_060303GB16All rights to technical modifications reserved. We accept no liability for any mistakes or printing errors.ZENNER ® is a registrated trademark of ZENNER GmbH & Co. KGaA..