BS 5995:1980

Foreword
Cooperating organizations
Methods of test
1 Scope
2 References
3 Symbols and units
4 Definitions
5 Standard test conditions
6 Test installation
7 Electrical tests
8 Steady-state tests
9 Dynamic tests
10 Endurance test
11 Pressure impulse test
12 Environmental tests
13 Presentation of test results
Appendices
A Typical plots
B Errors and classes of measurement
Tables
1 Symbols and units
2 Permissible systematic errors of measuring
    instruments as determined during calibration
Figures
1 Steady-state test circuit
2 Frequency response test circuit
3 Transient response test circuit
4 Servovalve coil impedance test
5 Voltage vector diagram
6 Load pressure drop versus input current
7 No-load flow versus input current
8 Internal leakage versus input current
9 Control flow versus load pressure drop
10 Null bias versus supply pressure
11 Null bias versus return pressure
12 Null bias versus temperature
13 Frequency response
14 Transient response

Methods of test, i.e. production acceptance and type tests, primarily for electrohydraulic flow control servovalves without interstage electrical feedback. Many sections are equally applicable to other types of servovalve.