Evaluation of Horizontal Patternators According to International Standard Requirements for Boom Sprayers

2021 ◽  
Vol 64 (5) ◽  
pp. 1635-1646
Author(s):  
Emilio Gil ◽  
Mariana Bueno ◽  
Javier Campos ◽  
Montserrat Gallart ◽  
Joao P. A. R. Da Cunha
Keyword(s):  
Distribution Patterns ◽  
Volume Distribution ◽  
List Type ◽  
Operating Pressure ◽  
Spray Pattern ◽  
Iso Standard ◽  
Iso Standards ◽  
Technical Requirements ◽  
Spray Distribution ◽  
Technical Specifications

HighlightsHorizontal distribution according ISO Standard 16119 is a measurement procedure to evaluate boom sprayers.ISO Standards 5682-1 and 5682-2 establish technical requirements for horizontal patternators.In this study, three types of patternators were evaluated to test their capability to meet the standards.The evaluated patternators showed similar results for spray distribution patterns.Minor deviations from ISO Standard 5682 did not imply differences according ISO Standard 16119.Abstract. Uniformity of spray volume distribution is one of the officially established measurements for the evaluation of horizontal boom sprayers according to ISO Standard 16119 and requirements established by ISO Standard 16122. Measurement of spray distribution patterns requires the use of specific devices such as horizontal patternators, which are included in the technical specifications for ISO Standards 5682-1 and 5682-2. Three such devices were tested, including two manual patternators (fixed and mobile) and one electronic patternator. According to information provided by the manufacturers, all three patternators align with ISO requirements. This study evaluated and compared the results obtained with the three patternators. Specifically, the horizontal distributions measured by the patternators were evaluated and compared using four nozzle types (XR 11003, AIXR 11003, TTJ60 11003, and AITTJ60 11003), three boom heights, and three operating pressures. Tests were conducted to quantify single-nozzle spray patterns, the coefficient of variation (CV) of the entire boom distribution, the liquid recovery capability of the three patternators, and the ability to simulate the entire boom spray distribution from a single-nozzle spray pattern. Results demonstrated correct functioning of all three patternators, resulting in identical conclusions considering the requirements established in the ISO standards. The CV values of the horizontal distributions were less than 10% for all cases. Moreover, the trends in values for all the evaluated factors (nozzle type, boom height, and operating pressure) were the same, independent of the patternator used. Keywords: ISO 16119, ISO 16122, ISO 5682, Liquid recovery, Nozzle spray pattern, Patternator, Spray boom, Transverse distribution, Uniformity.

Anniversary of the first national standards for geodetic instruments

2019 ◽  
Vol 946 (4) ◽  
pp. 20-25
Author(s):  
O. K. Golubkova ◽  
A.I. Spiridonov
Keyword(s):  
Public Service ◽  
Positive Impact ◽  
State Standards ◽  
National Standards ◽  
Technical Level ◽  
Instrument Making ◽  
The Public ◽  
Technical Requirements ◽  
Basic Parameters ◽  
Technical Specifications

State standards on the types, basic parameters of levels and theodolites as well as technical requirements were developed in CNIIGAiK in 1962–1963. The authors indicate the experience of developing the first State standards for geodetic instrument making, the difficulties encountered in developers. In this article the main stages of preparation of State standards, including action algorithm from technical specifications to submissions for the approval of the public service are marked step-by-step. The types of levels and theodolites, and the basic technical characteristics for each type are described. During 55 years the positive impact in the areas of production and application of standardized levels and theodolites, inter alia, streamlining the issuance of standard sizes of devices, increased production and improved their quality and technical level was revealed.

scholarly journals GENERAL TECHNICAL ISSUES AS TO INTRODUCTION OF ILLUMINATING AND ORIENTING AND LIGHTING FIRE EQUIPMENT

2018 ◽  
Vol 1 (2) ◽  
pp. 37-42
Author(s):  
O Тymoshenko ◽  
O Borys ◽  
T Skorobahatko
Keyword(s):  
Light Flux ◽  
Test Methods ◽  
Technical Committee ◽  
Performance Standard ◽  
Light Power ◽  
Power Sources ◽  
Technical Requirements ◽  
Technical Specifications ◽  
Conducting Research ◽  
General Technical

The issue of the necessity of developing state standards in the sphere of illuminating and orienting and lighting fire equipment in Ukraine as for classification and general requirements in general and general technical requirements and methods of fire-rescuer lantern tests, in particular, are considered. The main provisions of these standards, which are developed in the Ukrainian Civil Protection Research Institute (UkrCPRI) and on the recommendation of the Standardization Technical Committee of Ukraine TC 25 "Fire safety and fire protection equipment" are outlined and have been earlier introduced to the Program of works for the national standardization for the year of 2018. The application of the basic provisions of these standards will contribute to the introduction of the leading world scientific and technological achievements in Ukraine in the development and production of illuminating and orienting and lighting fire equipment in general, and in particular testing of purchased foreign lanterns for compliance with standardized technical requirements, which will allow more objectively evaluate and compare their technical specifications. In this case, the results of the testing of some test methods and test equipment are presented, according to ANSI/NEMA FL1-2009 Flashlight Basic Performance Standard, when conducting research in UkrCPRI of the best world models of lanterns equipped with modern LED sources of light, power sources, electronics, etc., in particular two fire-rescuer lanterns: Peli 3765 LED (USA) and Vantage®180 (USA), a group fire lantern VULCAN® LED ATEX LANTERN (USA), which are currently supplied domestic fire trucks ООО «VК «Pozhmashyna» and experimental model of  personnel fire lantern developed in UkrCPRI. The specified test methods apply to the following basic lighting technology characteristics of the lantern, such as: light flux, peak power of light and duration of operation of the lantern, useful range of light beam.

PELANGGARAN PERSYARATAN TEKNIS DAN LAIK JALAN PENGGUNAAN “KNALPOT RACING”

2016 ◽  
Vol 2 (1) ◽  
pp. 103-116
Author(s):  
Yuda Riyansah
Keyword(s):  
Road Traffic ◽  
Public Awareness ◽  
Exhaust System ◽  
Road Transport ◽  
Limiting Factor ◽  
Road Transportation ◽  
Police Station ◽  
Traffic Police ◽  
Technical Requirements ◽  
Technical Specifications

Bogor City Traffic Police have cracked down on the use of "racing exhaust" is the exhaust that create noise that should not be for the user "racing exhaust" that use will be dealt with by imposing a speeding ticket for anyone who is found to be using it. The using of "racing exhaust" the actual traffic police focus with a noisy exhaust, but for uniformity police finally cracked / menilang all types of non-standard exhaust. For the problem of "racing exhaust" did not meet the technical requirements specified Ministry of Transportation, car manufacturers as a product marketer must obtain permissions from the Ministry of Transportation regarding Technical Specifications and motor products to be marketed. Identify the problem in this research are: 1) What level of legal awareness violation technical requirements and road worthy in term of the use of "exhaust racing"? and 2) How to measure the traffic police in the discipline for violation of technical requirements and road worthy with the using of "racing exhaust" is associated with Law No. 22 of 2009 on Road Traffic and Road Transport ?. The purpose of the study are: 1) To determine, assess and analyze the level of legal awareness violation technical requirements and road worthy in terms the use of "exhaust system" and 2) To determine, assess and analyze the actions of the police traffic discipline for violation of technical requirements and acceptance way with the using of "racing exhaust" is associated with Law Number 22 Year 2009 regarding Traffic and Road Transportation. The method used is a normative juridical research method that is conceived as the norm of law, rules, principles or dogmas. The conclusion of this study is public awareness against the use of exhausting racing in the jurisdiction of Police Bogor City is still low and need to be enforced through the implementations of the traffic rules properly. Constraints are the limiting factor in the using of repression racing exhaust Bogor City Police jurisdiction is given the severity of the sanctions and the lack of awareness of traffic, but it is also caused by the presences of shops selling car accessories such tools freely. Factors that led to the use of racing exhaust that prestige factor, factor adolescent age, race factors, factors influence others. Efforts are being made the police to minimize the using of motor racing that preventive measures and repressive efforts. Efforts by the police in the jurisdiction of the police station in the city of Bogor minimize these violations carried out preventive and repressive that is by cracking down on traffic violators in juridical and non-juridical.

Economic Lirowth and Human Rights in Brazil: The First Nine Years of Military Tutelage

1973 ◽  
Vol 67 (5) ◽  
pp. 208-213
Author(s):  
Brady Tyson
Keyword(s):  
Distribution Patterns ◽  
Police Brutality ◽  
List Type ◽  
Type Number ◽  
Political Democracy ◽  
The Past ◽  
The People ◽  
The Military ◽  
The City

This is an interim, summary and provisional judgment on the Brazilian experiment of the past nine years, that is, since the military took power on April 1, 1964. To try to give an impression of the results of the interaction among the values of political democracy, equality, and economic growth, and the present levels compared with those of 1964 as well as what appear to be the trends. I have chosen six “indicators”:(1)the autonomy and integrity of the legal system;(2)torture and police brutality;(3)freedom of the mass media;(4)income distribution patterns;(5)education distribution patterns; and(6)the quality of life of the people of the city of greater São Paulo.

scholarly journals Suitability of aggregates gradation for base and subbase layers of pavement

Tehnika ◽  
2021 ◽  
Vol 76 (3) ◽  
pp. 291-301
Author(s):  
Marijana Nikolić-Ivanović ◽  
Olivera Đokić ◽  
Vladimir Milićević ◽  
Suzana Stefanović ◽  
Bratislav Milić
Keyword(s):  
Comparative Analysis ◽  
Granulometric Composition ◽  
Road Construction ◽  
The Other ◽  
Crushed Stone ◽  
Quality Requirements ◽  
Technical Requirements ◽  
Field Control ◽  
Technical Specifications ◽  
The Republic

The assessment of the suitability of the granulometric composition of the crushed stone aggregates (CSA) for an unbound base and subbase layers of pavement, in the Republic of Serbia is done based on the defined gradation bands, uniformity degree (Cu), coefficient of curvature (Cz), percentage of fines and percentage of particles passing a 0.02 mm sieve. On the other hand, standards which define the quality requirements of aggregates and unbound mixtures for road construction SRPS EN 13242 and SRPS EN 13285 introduce a significantly different approach to the assessment of the granulometric composition suitability. Categories are defined. Each category includes a particular boundary band, tolerances on sieves, differences in values passing each sieve. The categories are defined depending on the field of the application. For seven CSA 0/31.5 mm used for the construction of Corridor XI, a comparative analysis of the granulometric composition suitability was performed according to the requirements of the existing Technical Specifications (TS) of PE "Roads of Serbia" (PERS) and the specified SRPS EN standards. The analysed curves satisfy those technical requirements, but vary in categories from the most severe mixtures of the normal granulometric composition of the GA category, to the open mixtures of the GP category. It was concluded that the principle based on the defining allowed tolerances on the sieves and between the sieves, is more suitable for field control of of the granulometric composition and the good granularity of the aggregates. Technical Specifications should be modified to this approach.

scholarly journals Effect of Nozzle Angle, Size and Pressure on Spray Distribution based on Laboratory Conditions

2019 ◽  
Vol 9 (1) ◽  
pp. 2522-2525
Keyword(s):  
Peak Height ◽  
Liquid Volume ◽  
Distribution Data ◽  
Spray Parameters ◽  
Spray Pattern ◽  
Angle Size ◽  
Laboratory Conditions ◽  
Nozzle Size ◽  
Spray Distribution ◽  
Pattern Width

The objective of this study is to investigate spray parameters for different 40°– 95° even flat fan nozzle angles for banding spraying application, such as spray pattern width and spray volumetric distribution at pressures of 2 and 3bar using different nozzle sizes (0.15, 0.2, 0.3, 0.4 gpm). Spray distribution data was extracted from spray analyzer system or patternator. The results showed that nozzle angle and pressure significantly affected the spray pattern width. In addition, as the nozzle size increased, the liquid volume and the peak height under the nozzle center increased. These results suggest that the use of bigger nozzle angles improved the spray volumetric distribution.

scholarly journals Development and Prototype Testing of an Agricultural Nozzle Clog Detection Device

2021 ◽  
Vol 64 (1) ◽  
pp. 49-61
Author(s):  
Chin Nee Vong ◽  
Peter Ako Larbi
Keyword(s):  
Droplet Size ◽  
Detection System ◽  
New Technology ◽  
Quality Characteristics ◽  
List Type ◽  
Spray Application ◽  
Nozzle Clogging ◽  
Spray Pattern ◽  
Extended Range ◽  
Low Drift

HighlightsPrototypes of an agricultural nozzle clog detection system (for 18 nozzles) have been successfully developed.Spray quality characteristics (droplet size, pattern, and coverage) were not significantly affected when testing the device with extended-range nozzles (TeeJet XR8004).Most of the spray quality characteristics were significantly affected when testing the device with ultra low-drift nozzles (John Deere PSULDQ2004).Abstract. Agricultural nozzles are the main components that perform the spraying of agrochemicals, and their proper functionality is a key element for uniform spray application on crops. Because nozzles have small orifices, they can become clogged when there is debris from the agrochemical in the tank. Nozzle clogging during spray application results in poor pest and weed management and increased cost for re-spraying the affected crop row. Measures used to prevent nozzles from clogging include using screens or strainers to filter out debris before it reaches the nozzle tip, as well as performing regular checks on the nozzles. However, nozzle clogging still occurs during spraying despite the precautions taken. Thus, a device that can detect nozzle clogging during spraying is necessary to enable a quicker response that will ensure uniform application across each row of the crop. A novel, patented device for detecting clogged nozzles that is externally attachable to each nozzle on a sprayer boom was developed in the Precision Application Technology Lab at Arkansas State University. The main objective of this article is to present a general description of this prototype nozzle clog detection device and the nozzle clog detection system. Spray droplet size and pattern tests under controlled conditions and spray coverage tests under field conditions were conducted with and without the device to determine if there were significant differences in droplet size, spray pattern, or spray coverage between using and not using the device. The tests demonstrated that this new technology has potential for detecting clogged nozzles without significantly influencing spray quality for extended-range nozzles but not for ultra low-drift nozzles. To increase the reliability of the performance of this new technology, further improvements in the design need to be considered. Keywords: Clogged nozzle, Detection, Droplet size, Prototype device, Spray coverage, Spray pattern.

The Effect of Nozzle Breakaway Pressure on the Spray Pattern Formed

2012 ◽  
Vol 248 ◽  
pp. 173-178
Author(s):  
Adedamola Najeem Peleowo
Keyword(s):  
Fuel Injection ◽  
Travel Speed ◽  
Main Function ◽  
Operating Pressure ◽  
Fuel Injector ◽  
Test Rig ◽  
Spray Pattern ◽  
Injector Nozzle ◽  
Schlieren Photography ◽  
Optical Mirrors

The main function of a fuel injector nozzle is to break fuels into droplets, form the spray pattern, and propel the droplets into a combustion chamber. The amount of spray volume at a given operating pressure, the travel speed, and spacing between the jets of fuel can also be determined by the nozzle. In fuel injection, the smallest possible droplet size is desired for the most flow. This work presents an opportunity to use the Schlieren arrangement as a visualization method to view the flow of fuel from a three-hole fuel injector nozzle which cannot be seen by the naked eye. The jet flow of diesel Fuel was investigated by Schlieren photography. A test rig was designed and constructed to accommodate the nozzle; optical mirrors were arranged according to Schlieren specifications in order to allow the jet to be photographed. The breakaway pressure of the nozzle was varied between 60bar to 80bar. Each hole of the nozzle is 0.26mm in diameter and 120° apart; the third jet could not be seen from the images because the camera took x-y dimension images. The spray pattern observed from the two dimensional images of the jets developed were seen to be well dispersed. Su et al [3] found that emissions could be reduced in diesel engines if the injector nozzle produces smaller and more dispersed droplets.

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