Method of evaluating pneumatic valve positioners with input signal of 3 to 15 lbf/in2 (gauge).
NORMA vydaná dňa 22.3.1967
Označenie normy: BS 4151:1967
Dátum vydania normy: 22.3.1967
Počet strán: 14
Približná hmotnosť: 42 g (0.09 libier)
Krajina: Britská technická norma
Kategória: Technické normy BS
Specifies tests to determine performance of pneumatic valve positioners with 3 to 15 lbf/in2 (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. Status: Confirmed