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PD ISO/TR 15155 — Test Facilities for Agricultural Irrigation Equipment Standard Series
Test Facilities for Agricultural Irrigation Equipment — Series Overview (ISO/TR 15155 and ISO/TR 15155-2)
🌾 PD ISO/TR 15155 is a British Standards Institution (BSI) Published Document adopting the ISO technical report, covering the system composition, operation and test procedures of test facilities for agricultural irrigation equipment. The series was prepared by BSI technical committee AGE/30 (Irrigation and drainage equipment) and carries the ICS classification 65.060.35 (agricultural machinery and equipment). Comprising the base part ISO/TR 15155:2005 and the operating-manual part ISO/TR 15155-2:2012, the series offers a common framework for irrigation equipment manufacturers, test laboratories and agricultural engineering professionals to build, describe and operate credible test facilities.
💡 The reliable evaluation of irrigation equipment depends on a properly specified test facility. This series defines both the system components and procedures a facility should have, and the facility description and operating-manual requirements, providing a basis for traceable, repeatable irrigation testing.
1. Series Structure and Scope 📌
The series comprises two parts that together form a complete framework for irrigation test facilities:
| Part | Document | Subject | Main Content |
|---|---|---|---|
| Base part | PD ISO/TR 15155:2005 (ISO/TR 15155:2005) | Test facilities for agricultural irrigation equipment | Scope, normative references, terms and definitions, system components, facility procedures and policies, plus annexes on hydraulic properties of sprinklers, drip emitters and valves in clear water |
| Operating manual | PD ISO/TR 15155-2:2012 (ISO/TR 15155-2:2012) | Test facility operating manual | Facility description and functions, facility name, range of testing, organizational structure, organization chart and operational points |
⚠️ Technical reports are non-mandatory documents; they do not purport to include all necessary provisions of a contract, and users are responsible for their correct application. The series concentrates on test facilities rather than product performance limits for irrigation equipment.
2. System Components and Key Parts 🔧
The 2005 edition systematically sets out the system components of an irrigation test facility, normally configured according to the type of product under test:
- Water supply and pressure regulation: provides a stable, adjustable water source and working pressure so that test conditions remain controllable.
- Flow and pressure measurement devices: measure the flow and pressure characteristics of sprinklers, emitters and valves — the core of hydraulic performance testing.
- Test rigs and mounting devices: hold the equipment under test, ensuring its position, orientation and spacing meet the requirements of the relevant product test.
- Data acquisition and recording: record flow, pressure, time and other parameters automatically or manually to keep results traceable.
- Auxiliary facilities: such as water filtration and temperature control, to simulate realistic irrigation conditions with clear water.
💡 Treat the “system components” as a whole: stable supply pressure, accurate flow metering and complete data recording all directly influence measured values such as sprinkler throw, uniformity and drip emitter discharge coefficients.
3. Facility Procedures, Policies and Operating Manual 📋
Reliable operation depends on well-defined procedures and policies. The 2005 edition includes a section on “test facility procedures and policies”, requiring the facility to establish procedures for pre-test preparation, in-test control, data recording and reporting, equipment maintenance and calibration, and personnel training, together with quality policies that safeguard impartiality and repeatability.
The 2012 operating-manual part further requires each facility to prepare and maintain an operating manual covering:
- Facility description and functions: location, scale and the types of tests that can be carried out.
- Test facility name and range of testing: the identifying name and the scope of test items accepted.
- Organizational structure and chart: structure, responsibilities and staffing, presented as an organization chart.
- Operational points: day-to-day operation, safe working practices and record management.
✅ The core value of an operating manual is traceability: when results are disputed or a facility is re-assessed, the manual and test records demonstrate precisely under what conditions the tests were performed, supporting the validity of the outcomes.
4. Hydraulic Property Measurement Methods 🔥
The 2005 edition provides, in its annexes, methods for measuring the hydraulic properties of three typical categories of irrigation equipment in clear water — the methodological basis for tests carried out in the facility:
| Annex | Object | Key Measured Parameters | Typical Application |
|---|---|---|---|
| Annex A | Sprinkler hydraulic properties in clear water | Working pressure, discharge, throw radius, application rate and uniformity | Sprinkler system performance evaluation and selection |
| Annex B | Drip emitters and emitting pipe hydraulic properties in clear water | Discharge-pressure relationship, discharge coefficient, manufacturing variation and uniformity | Drip system design and emitter quality assessment |
| Annex C | Valve hydraulic properties in clear water | Flow coefficient, pressure-drop-flow relationship and opening characteristics | Irrigation network hydraulics and valve selection |
⚠️ Hydraulic tests should ideally be run with clear water to avoid the influence of impurities, temperature and water quality on the measured results; records should be compared with product standard values or manufacturer-declared data.
5. Engineering Practice Essentials 🛠️
- 🔍 Facility planning: new irrigation test facilities should be designed using the system components and operating-manual requirements of the series, ensuring coverage of sprinklers, drip emitters and valves.
- 🔧 Calibration and maintenance: flowmeters and pressure gauges should be calibrated regularly and supply systems maintained to guarantee accurate, stable test conditions.
- 📊 Data management: keep complete test records and reports, including facility name, test date, environmental conditions, product details and raw measurements.
- 📋 Quality and personnel: test staff should be trained and familiar with procedures; quality policies should ensure impartial processes and reproducible results.
6. Frequently Asked Questions ❓
❓ Q: How does PD ISO/TR 15155 differ from ordinary product standards?
A: It is a technical report focused on the test facility itself rather than product performance limits; product requirements are set by the relevant irrigation equipment standards, with this series providing the testing and evaluation platform.
A: It is a technical report focused on the test facility itself rather than product performance limits; product requirements are set by the relevant irrigation equipment standards, with this series providing the testing and evaluation platform.
❓ Q: Why is the operating manual part (15155-2) needed?
A: A facility’s credibility rests on management and operation as much as hardware. This part standardizes facility description, organizational structure, test range and operational requirements for orderly management and third-party review.
A: A facility’s credibility rests on management and operation as much as hardware. This part standardizes facility description, organizational structure, test range and operational requirements for orderly management and third-party review.
❓ Q: How do the measurement methods for drip emitters and sprinklers differ?
A: Sprinklers emphasize throw radius, application rate and spatial uniformity; drip emitters emphasize pointwise discharge-pressure behaviour, discharge coefficient and manufacturing variation. Facilities need appropriate rigs and instrumentation for each.
A: Sprinklers emphasize throw radius, application rate and spatial uniformity; drip emitters emphasize pointwise discharge-pressure behaviour, discharge coefficient and manufacturing variation. Facilities need appropriate rigs and instrumentation for each.
🔍 Q: Is this series mandatory for all irrigation testing?
A: No. Technical reports are not mandatory; adoption depends on contractual or user requirements. When results need mutual recognition and traceability, building the facility system to this series is recommended.
A: No. Technical reports are not mandatory; adoption depends on contractual or user requirements. When results need mutual recognition and traceability, building the facility system to this series is recommended.