Positive displacement meters have an outstanding record for durability and reliability. Initial accuracy coupled with proven accuracy retention, results in a long life meter. Good meter initial accuracy is easy to achieve through calibration however accuracy retention is dependant on a number of factors; Cyclic capacity (speed, stress, wear rate); Material selection (dimensional stability); adjustable tangents for precise accuracy adjustment (Model 750, Model 1010 and AL Series all have adjustable tangents); Diaphragm Area (minimising the forces on the diaphragm, mechanism and valves) and Quality construction materials that provide smooth operation and long life with sustained accuracy.
Landis+Gyr maintains a testing, repair and certification facility for meters from domestic through to large industrial, flow rates from 0.5 to 6500 m3/h. Our test equipment is certified to the highest local, national and internationally recognized standards of gas measurement. Landis+Gyr is a Verifying Authority for the verification and re-verification of reference standards of measurement under Regulation 13 of the National Measurement Regulations 1999 (Cth) for volume measurement.
Meter boss threads vertical inlet/outlet 10 Light 1" to BS746 1987 at 152mm ( 6" ) centres. 1" 10 Lt
Pressure die cast aluminium.
Pulse Output Module
10 litres per pulse using IN-Z61 or IN-Z62 pulse module.
Gas ( SGO.62)
Housed in a compact aluminium case, the Model 750 is a slow revving high capacity gas meter. Its 2 litre per cycle diaphragm operates at a rate of 40% slower than its 1.2 litre rivals. This design minimises the speed of internal components and coupled with high quality materials wear rates are reduced ensuring long term accuracy retention.
The Model 750 has of Natural Gas (SG0.62) or 6m³/h of Air at 125Pa pressure drop, a standard proven in Australia and throughout the world to ensure durability and reliable accuracy for periods of beyond 20 years.
The outstanding design features of the Model 750 gas meter such as its tangent control, large cyclic capacity and magnetic drive index provide unparalleled accuracy from 10 litres/h to 7.5m³/h. Our modern calibration and test facilities are accredited to ISO/IEC 17025.
The Model 750 meter has a low pressure absorption due to the tangent assembly, sliding low friction valves, and large cyclic volume (2 dm³/cycle), which ensures extended field life and long term accuracy retention.
Pressure absorption across the meter reflects how hard the meter is working and is directly proportional to the component wear rate and subsequent meter life. The pressure absorption of the Model 750 is 125 Pascals (Pa) at a flow rate of 6m³/h of Air (7.5 m³/h of Natural Gas).