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BS 4151:1967
BS 4151:1967 Method of evaluating pneumatic valve positioners with input signal of 3 to 15 lbf/in^2 (gauge)
standard by BSI Group, 03/22/1967
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M00017475
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Full Description
Specifies tests to determine performance of pneumatic valve positioners with 3 to 15 lbf/in^2 (gauge) input signal. Method of evaluation specifies use of a valve operator of a spring-opposed or double-acting diaphragm or piston type in order to allow a ready comparison to be made between different types of positioner.Cross References:
BS 1523
BS 1780
BS 2643
BS 3512
