Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and units
5 Test conditions
5.1 Gas supply
5.2 Temperature
5.3 Pressures
5.4 Electrical supply
6 Test procedures
6.1 Test conditions
6.2 Inlet pressure
6.3 Static tests
7 Control signal - pressure static characteristics test at
null forward or relief flow rate
7.1 Test installation
7.2 Test procedures
7.3 Calculation of characteristics
8 Flow - pressure static characteristics test
8.1 Test circuit for flow rate measurement
8.2 General requirements
8.3 Test procedures
8.4 Calculation of characteristics
9 Pressure regulation characteristics test
9.1 Test circuit
9.2 Test procedure
10 Leakage at null forward flow rate or relief flow rate
characteristic test
10.1 Test circuit
10.2 Test procedure
10.3 Calculation of characteristic
11 Dynamic characteristics
11.1 Step responses
11.2 Frequency responses
12 Presentation of test results
12.1 Control signal - pressure static characteristics
12.2 Flow rate - pressure characteristics
12.3 Pressure regulation characteristics
12.4 Leakage characteristic
12.5 Dynamic characteristics
Annex A (informative) - Calculation Procedures of Gain and
Phase Lag
A.1 Ideal case
A.2 Real cases
Bibliography