规定使用3至15 lbf/in^2（仪表）输入信号确定气动阀门定位器性能的试验。评估方法规定使用弹簧对置式或双作用隔膜式或活塞式阀门操纵器，以便在不同类型的定位器之间进行现成的比较。交叉引用:BS 1523BS 1780BS 2643BS 3512

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 1523BS 1780BS 2643BS 3512