Landis+Gyr 750 Installation, Commissioning And Maintenance Manual Download Page 16

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Model 750 Gas Meter

Installation, Commissioning and Maintenance Manual

Page 16 of 17

17-May-2016

Due to continuous product development the details above are subject to change without notice. Whilst Gyr has taken all reasonable

care in reviewing the information in this document, Gyr makes no representations in respect of, gives no guarantees or undertakings in

relation to, and to the maximum extent permitted by law, excludes all warranties in relation to, the accuracy or completeness of the information

in this document. Prospective users of this information should make their own enquiries as to its accuracy and reliability.

ASSEMBLY DRAWINGS

FRONT VIEW CUTAWAY

TOP VIEW WITHOUT HOUSING AND INDEX

Summary of Contents for 750

Page 1: ... other database of these documents requires the written approval of Landis Gyr Due to continuous product development these details are subject to change without notice Model 750 Gas Meter Installation Commissioning and Maintenance Manual Revision 750002 Model 750 Installation Commissioning and Maintenance Manual 17th May 2016 Landis Gyr ...

Page 2: ...______________________________________________________________8 STORAGE ________________________________________________________________________________8 TRANSPORTATION ________________________________________________________________________8 INSTALLATION ____________________________________________________________________________8 PUTTING INTO OPERATION ___________________________________________...

Page 3: ...s that demonstrate the long life and high accuracy for in excess of 20 million cycles Exceeds the endurance testing requirements of both the European Standard EN1359 1999 and the Australian Gas Association AG702 which are in excess of the endurance testing requirements as specified in OMIL Recommendation 31 Pressure Absorption The slow revving operation 2 litres cycle the low friction valve assemb...

Page 4: ...IMENSIONS MATERIAL OF CONSTRUCTION For more details refer to Document Number 750004 Model 750 Material Weight and Recyclability Table 1 Materials of Construction Material Housing Diecast Aluminium Centre Block PBT polybuylene terephthalate Grid Valves PF Phenoplastic Diaphragm Plates Pans Steel Rods Shafts Steel Valve Guide Steel Diaphragms Moulded PET and Elastomer Index window PC UV Stabilised P...

Page 5: ...ation to pass initial testing however sustained accuracy over time comes down to the quality the design and construction of the meter Landis Gyr has always recognised that the cost of changing meters in the field coupled with repair costs is significant and a meter with a shorter field life also attracts other costs including uncertain revenue collection and hidden but real cost associated with a ...

Page 6: ...ge Although magnahelic and transducers can be used to determine absorption and oscillation these devices must be calibrated to the reference standard a the British Slope Gauge as described in AG702 The acceptance criteria for pressure absorption is no greater than 125Pa through all flow rates and for oscillation 75Pa through all flow rates METER ACCURACY TREND Trend is the accuracy at 100 Qmax min...

Page 7: ...mpleteness of the information in this document Prospective users of this information should make their own enquiries as to its accuracy and reliability INDEPENDENT ENDURANCE TESTING RESULTS 0 2 Qmax EN1359 1998 Endurance Test Results Conducted by Independent Accredited Laboratory DVGW Forschungstelle 3 2 1 0 1 2 3 0 5000 10000 15000 20000 25000 30000 Volume m3 5000h Qmax Percentage Error 13627419 ...

Page 8: ...paired resulting in improper measurement and loss of revenue STORAGE Diaphragm meters should be stored upright in a clean dry place and fitted with dust caps on the inlet and outlet connections This will exclude debris that can be detrimental to the meter s internal components TRANSPORTATION Diaphragm meters should be transported upright be suitably restrained and properly cushioned to prevent the...

Page 9: ...eam of the meter to be sure that all connections are made up and tight or that the downstream valve if there is one is closed CARE must be taken to prevent excessive flows and high pressure drops across the meter If CARE is not exercised when pressurising the meter over speeding of the meters internal mechanism may result in internal damage to the meter To prevent over speeding the pressure drop a...

Page 10: ...phide and water Therefore the service life will be dramatically affected accordingly WARNING PURE OXYGEN All regulators and meters supplied by Landis Gyr are NOT SUITABLE for pressure regulating or measuring PURE OXYGEN Special meters and regulators made from specific materials are required to prevent heat build up as a result of friction etc SERVICE LIFE INTERNAL CORROSION Service life varies acc...

Page 11: ...ning and closing of the reed switch All meters are fitted with a magnet in the last index wheel and hence each meter is pulse retro fittable while in service by use an External Pulse Module without the need to interfere with the metrology of the meter or the meter seals The pulse output is 1 pulse per 10 litres No other pulse output values are available Picture right shows the Model 750 Meter with...

Page 12: ... 750085 PULSE OUTPUT INSTALLATION INSTRUCTIONS IN Z41 Assembly 1 Push connect pulse cable into Pulse Module Housing 1 IN Z41 Security Sealing Pin Wire 1 Insert sealing Pin 6 into Pulse Module Housing 1 2 Seal using wire length 9 and Lead Seal 10 if desired IN Z41 Installation to Index 1 Attach the pulse module to the meter index 2 Insert Copper Ring 3 and Lead Pin 2 3 Squash Lead Pin 2 using plier...

Page 13: ...ed Plastic Seal Z4 Z5 3 Reqd 32446710 750013 X Red Plastic Seal NSW EL 3 Reqd 750014 X Red Plastic Seal 750 NZ 3 Reqd 750101 Change Gear for gas meter 3747000 750102 Change Gear for index 3747500 750020 Index Front Facing Complete 750021 Index Screw ISO 7045 M4x8 4 8 H Zn galv 4 Reqd 750022 Index Cover hydrophilic coated 7502XX X Index Plate Printed Customer Specific 750023 index plate source part...

Page 14: ... o ring 34x2 5 NBR 70 Shore A 3110496 750070 X Meter Assembled w o Index or Badge c w Non Return 750065 Outlet Pipe Complete c w Non Return Valve 750064 Non Return Assembly 750061 Outlet Pipe Moulded 32319623 750062 Top o ring 27x2 NBR 70 Shore A 3110001 750063 Bottom o ring 34x2 5 NBR 70 Shore A 3110496 750031 O ring Top Bottom 3 5x190 NBR 70 Shore A 750066 Replaced by 750031 was 4x190mm 610019 M...

Page 15: ...lation to the accuracy or completeness of the information in this document Prospective users of this information should make their own enquiries as to its accuracy and reliability Miscellaneous L0331 Grease Kluber Isoflex Topas NB5051 L0332 Oil Kluber Constant OY32 A0339 Pressure Test Nipple Sealant Accessories BKNut M5 Nyloc Nut 15006 M5x12 Screw Molybond Coated 750080 Box for Four 4 Meters 75008...

Page 16: ...ng the information in this document Landis Gyr makes no representations in respect of gives no guarantees or undertakings in relation to and to the maximum extent permitted by law excludes all warranties in relation to the accuracy or completeness of the information in this document Prospective users of this information should make their own enquiries as to its accuracy and reliability ASSEMBLY DR...

Page 17: ...able care in reviewing the information in this document Landis Gyr makes no representations in respect of gives no guarantees or undertakings in relation to and to the maximum extent permitted by law excludes all warranties in relation to the accuracy or completeness of the information in this document Prospective users of this information should make their own enquiries as to its accuracy and rel...

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