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This and any attached documentation is
CONFIDENTIAL.
Any disclosure, use, reproduction, copying, or storage
in any electronic or other database of these documents requires the written approval of Gyr.
Due to continuous product development these details are subject to change without notice.
50 Cyanamid Street Laverton North Victoria 3026 Australia
Phone +61 3 8368 1600 • Fax +61 3 8368 1699
Model 750 Gas Meter
Installation, Commissioning and Maintenance Manual
GENERAL INFORMATION ___________________________________________________________________ 3
SPECIFICATIONS __________________________________________________________________________ 3
OVERALL DIMENSIONS _____________________________________________________________________ 4
MATERIAL OF CONSTRUCTION ______________________________________________________________ 4
SCREW TORQUE SPECIFICATIONS __________________________________________________________ 4
METER ACCURACY ________________________________________________________________________ 4
LOW FLOW ACCURACY ____________________________________________________________________ 5
ACCURACY RETENTION ____________________________________________________________________ 5
PRESSURE ABSORPTION ___________________________________________________________________ 6
ABSORPTION AND OSCILLATION ____________________________________________________________ 6
METER ACCURACY TREND _________________________________________________________________ 6
ENDURANCE TESTING _____________________________________________________________________ 6
INDEPENDENT ENDURANCE TESTING RESULTS _______________________________________________ 7
HANDLING ________________________________________________________________________________ 8
STORAGE ________________________________________________________________________________ 8
TRANSPORTATION ________________________________________________________________________ 8
INSTALLATION ____________________________________________________________________________ 8
PUTTING INTO OPERATION _________________________________________________________________ 9
SPECIAL NOTE FOR BOTTLED OR TANK LPG GAS SYSTEMS ____________________________________ 9
INSPECTION & MAINTENANCE_______________________________________________________________ 9
SUITABLE GASES ________________________________________________________________________ 10
BIO-GAS _______________________________________________________________________________ 10
WARNING! PURE OXYGEN _______________________________________________________________ 10
SERVICE LIFE
– INTERNAL CORROSION ___________________________________________________ 10
METER BAR OPTIONS _____________________________________________________________________ 10
METER CONNECTION OPTIONS ____________________________________________________________ 10
PULSE OUTPUT (OPTIONAL) _______________________________________________________________ 11
PULSE OUTPUT INSTALLATION INSTRUCTIONS _______________________________________________ 12
IN-Z41 Assembly ________________________________________________________________________ 12
IN-Z41 Security Sealing Pin & Wire __________________________________________________________ 12
IN-Z41 Installation to Index_________________________________________________________________ 12
Notes _________________________________________________________________________________ 12
Table 8 : PARTS LIST ______________________________________________________________________ 13
ASSEMBLY DRAWINGS ____________________________________________________________________ 16
