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BS ISO 16399:2023

BS ISO 16399:2023

$198.66

Agricultural irrigation equipment. Meters for irrigation water

Published By Publication Date Number of Pages
BSI 2023 66
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PDF Catalog

PDF Pages PDF Title
2 National foreword
7 Foreword
9 1 Scope
2 Normative references
3 Terms and definitions
13 4 Metrological requirements
4.1 Values of Q1, Q2, Q3 and Q4
4.1.1 Permanent flow rate (Q3)
14 4.1.2 Measuring range
4.1.3 Relationship between permanent flow rate (Q3) and overload flow rate (Q4)
4.1.4 The ratio Q2/Q1 shall be 1,6
4.2 Maximum permissible error (MPE)
4.2.1 Formulation
4.2.2 Accuracy class
15 4.2.3 Meter temperature classes
4.2.4 Reverse flow
4.2.5 Absence of flow or of water
16 4.2.6 Static pressure
4.3 Requirements for meters and ancillary devices
5 Water meters equipped with electronic devices
6 Technical characteristics
6.1 Materials and construction of water meters
6.2 Adjustment and correction
17 6.3 Installation conditions
6.4 Rated operating conditions
6.5 Pressure loss
18 6.6 Marks and inscriptions
19 6.7 Indicating device
6.7.1 General requirements
20 6.7.2 Types of indicating device
21 6.8 Sealing and security
6.8.1 Meter security and protection against manipulations
6.8.2 Mechanical protection devices
6.8.3 Electronic sealing devices
6.9 Other devices
7 Performance tests
7.1 General conditions for the tests
7.1.1 Water quality
7.1.2 Reference conditions
22 7.1.3 General rules concerning test installation and location
7.2 Static pressure test
7.2.1 General
7.2.2 Preparation
7.2.3 Test procedure
23 7.2.4 Acceptance criteria
7.3 Determination of errors
7.3.1 General
7.3.2 Preparation
28 7.3.3 Test procedure
29 7.3.4 Acceptance criteria
7.4 Pressure loss test
7.4.1 General
7.4.2 Preparation
7.4.3 Test procedure
32 7.4.4 Calculation of the actual Δp of a water meter
7.4.5 Acceptance criteria
7.5 Reverse flow test
7.5.1 General
7.5.2 Preparation
7.5.3 Test procedure
33 7.5.4 Acceptance criteria
7.6 Flow disturbance tests
7.6.1 General
34 7.6.2 Objective of the test
7.6.3 Preparation
7.6.4 Test procedure
7.6.5 Acceptance criteria
36 7.7 Endurance tests
7.7.1 Durability test
41 7.7.2 Resistance to solid particles test
43 7.8 Magnetic field testing
7.9 Test on ancillary devices of a water meter
8 Tests related to the influence quantities and perturbations
44 Annex A (informative) Pulse input solutions
50 Annex B (normative) Flow disturbers
64 Bibliography

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BS ISO 16399:2023
$198.66