General Details :
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 a capacity of 7.5m³/h 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.
Pressure Absorption :
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).
Accuracy Retention :
The initial accuracy of a meter is easy to achieve by using calibration to pass initial testing. However, sustained accuracy over time comes down to the quality, design and construction of the meter. The Model 750 has been designed for long-term stability and extended field life.
Model 750 Specifications :
Natural gas, town gas, propane, butane, LPG and inert gases. For other gases please consult Landis+Gyr.
Temperature Range –10 °C to +65 °C.
Cyclic Volume 0.002 cubic metres (2 litres)
Working Pressure Refer to meter index badge
Index Drive Magnetically driven index ensuring low mechanical wear.
Threads Meter boss threads vertical inlet/outlet 10 Light 1” to BS746 1987 at 152mm ( 6” ) centres. 1” 10 Lt. to ¾” BSP Cap Nut and Liner set available part number SK5.
Case Construction Pressure die cast aluminium. The Model 750 meter weighs 2.75 kg
Pulse Output Ready All meters are fitted with a magnet in the far right index wheel and hence each meter is pulse retro fittable in the field 1 pulse / 10 lts.
Corrosion Protection Alodine internal and external pretreatment of castings followed by baked polyester powder coat for maximum corrosion protection.
Pulse Output Module 10 litres per pulse using IN-Z61 or IN-Z62 pulse module.