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BS ISO 21622-2:2023

BS ISO 21622-2:2023

$198.66

Irrigation techniques. Remote monitoring and control for irrigation – Tests

Published By Publication Date Number of Pages
BSI 2023 62
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PDF Catalog

PDF Pages PDF Title
2 National foreword
7 Foreword
8 Introduction
9 1 Scope
2 Normative references
3 Terms, definitions and symbols
3.1 Terms and definitions
10 3.2 Symbols
4 Functionality
4.1 General
11 4.2 Power tests
4.2.1 Consumption
12 4.2.2 Power loss
16 4.3 Solenoid valve outputs
4.3.1 Opening/closing solenoid valves
17 4.3.2 Voltage and current, simulating SV
18 4.3.3 Solenoid valve pulse width duration
19 4.3.4 Short circuit and open circuit
21 4.3.5 Remote unit operation with real solenoids
22 4.3.6 Association of sensors with solenoid valve outputs
24 4.4 Counter entries
4.4.1 Sensor power supply
4.4.2 Flow calculation
25 4.4.3 High flow alarm
4.4.4 Low flow alarm
4.4.5 Hardware pulse filtering — Maximum pulse rate and minimum pulse width
4.4.6 Maximum frequency between pulses
26 4.4.7 Minimum frequency between pulses
4.4.8 Pulse filtering by software with fixed time
4.4.9 Software pulse filtering with configurable time
27 4.4.10 Minimum time between pulses
4.4.11 Maximum time between pulses
28 4.4.12 “Open contact” test
4.4.13 “Closed contact” test
29 4.4.14 Random pulse counting test
4.4.15 Concurrent pulse count test
4.4.16 Counter events and alarms
30 4.5 Analogue inputs
4.5.1 General
31 4.5.2 Measurement accuracy
32 4.5.3 Events and alarms generated by the analogue input
35 4.6 Other inputs and outputs
4.6.1 Purpose of the test
4.6.2 External signals
36 4.6.3 Internal signals
37 4.7 Operating logic
4.7.1 General
4.7.2 Low supply voltage safety interlock (lockout) test
38 4.7.3 Low-pressure safety lockout test
4.7.4 Excess flow (flow rate) safety shutdown test
39 5 Robustness
5.1 Environmental conditions
5.1.1 General
40 5.1.2 Solenoid valve actuation (SV)
5.1.3 Counter pulses
41 5.1.4 Analogue readout
5.2 Power supply
5.2.1 Polarity reversal in main power supply
5.2.2 Short-circuit at the SV solenoid valve output
42 5.3 Accidental wiring errors on inputs and outputs
5.3.1 Purpose of the test
43 5.4 Analogue input
5.4.1 Overvoltage (analogue voltage input)
5.4.2 Overcurrent (analogue input by current)
44 5.4.3 Short circuit
5.5 Communications
5.5.1 Antenna short circuit test
45 5.5.2 Antenna open circuit test
5.6 Long-term behaviour
5.6.1 Purpose of the test
5.6.2 Test procedure
46 5.6.3 Acceptance criteria
47 Annex A (Informative) Questionnaire for testing irrigation control systems
61 Bibliography

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BS ISO 21622-2:2023
$198.66