BS 4161-4:1970
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
Gas meters Plate constructed positive displacement diaphragm meters for a pressure of 350 mbar (5 lbf/in2) and up to 170 cubic meters (6000 cubic feet) per hour rating
Hardcopy , PDF
01-12-2003
English
31-03-1970
Cooperating organizations
Foreword
Specification
1. Scope
2. Definitions
3. Ratings
4. Materials
5. Design and dimensions
6. Assembly and workmanship
7. Connections
8. External leakage and distortion
9. Internal leakage
10. Performance
11. Type tests
12. Finish
13. Transit disc or cap
14. Marking
Appendices
A. Method of ordering
B. Test requirements for synthetic diaphragms
C. Requirements and tests for plastics index windows
D. Test requirements for sealing glands
E. External leakage test
F. Accuracy test for registration
G. Tests for pressure loss and pressure oscillation
H. Life test
J. Paint scratch test
K. Paint resistance to humidity test
L. Requirements for the inclined pressure gauge
M. Conversion factors
Tables
1. Case dimensions and ratings
2. Case thickness
3. Internal leakage test rates
4. Pressure loss and oscillation
5. Connector socket dimensions
Figures
1. Connector sockets
2. Meter index, direct reading with test drum, from
20 m cubed/h up to 100 m cubed/h badged rating
3. Meter index, direct reading with test drum, over
100 m cubed/h badged rating
4. Meter index, direct reading with test dial, from
700 ft cubed/h up to 3000 ft cubed/h badged rating
5. Meter index, direct reading with test dial, over
3000 ft cubed/h badged rating
6. Case durability test apparatus
7. Escape badge
8. External leakage test apparatus
9. Paint scratch test apparatus
10. Inclined pressure gauge - 7.5 mbar range
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