มิเตอร์ แก๊ส Extending meter life with proven accuracy retention

GasMeter

 

 

 

 

 

AMPY EMAIL METERING
Model 750 Domestic Gas Meter

Extending meter life
with proven accuracy retention

Model 750
Designed for long life and superior performance

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FEATURES INCLUDE

Slow Revving

2 lite Cyclic Volume

Capacity 7.5m?/hr (Gas)

Corrosion Resistant

Rugged Compact Construction

Exceptional Accuracy

Superior Low Flow Performance

Designed to EN1359 & AG702

Low Pressure Drop

8 Digit Sealed Index

Manetic Drive

Pulse Ready
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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 7.5m?/h of Natural Gas (SG0.62) or 6m?/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.

Accuracy
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 7.5m?/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 dm?/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
6m?/h of Air (7.5 m?/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.

Endurance Testing
Endurance testing to the most stringent world requirements has been conducted on the Model 750 that show long term accuracy retention. The Model 750 meter exceeds the endurance testing requirements of the European Standard EN1359:1999, American National Standard ANSI B109.1, Australian Standard
AS4647:2005, and OIML Recommendation 31.

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SPECIFICATIONS
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Gases

 

Natural gas, town gas, propane, butane, LPG and inert gases.
For other gases please consult AMPY Email Metering.

 

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

Index
Anti-Fog hydrophilic coated
8 digit index 5 whole cubic
meters (white numbers on black
wheels) and 3 decimal places
(white numbers on red wheels).

 

Threads
Meter boss threads vertical
inlet/outlet 10 Light 1" to
BS746 1987 at 152mm ( 6" )
centres. 1" 10 Lt. to 3/4" BSP
Cap Nut and Liner set
available (part number SK5).

 

Case Construction
Pressure die cast aluminium.

Pulse Output Ready
All meters are fitted with a
magnet in the first index wheel
and hence each meter is easily
pulse retro fittable in the field             
1 pulse / 10 lts.

 

Corrosion Protection           
Chromium chromate internal
and external pre-treatment     
of castings followed by baked
polyester powder coat for
maximum corrosion protection. 

 

Pulse Output Module
10 litres per pulse using
either the IN-Z31 or IN-Z62