1、DEUTSCHE NORM July 1999 DIN IS0 5682-1 Equipment for crop protection - Spraying equipment Part 1 : Test methods for sprayer nozzles (IS0 5682-1 : 1996) ICs 65.060.40 Landmaschinen und Traktoren - Pflanzenschutzgerte - Teil 1 : Prfverfahren fr Dsen (IS0 5682-1 : 1996) This standard incorporates Inter
2、national Standard IS0 5682-1 Equipment for crop protection - Spraying equipment - Part 1: Test methods for sprayer nozzles. A comma is used as the decimal marker. National foreword This standard has been prepared by ISO/TC 23. The responsible German body involved in its preparation was the Normenaus
3、schu Maschinenbau (Mechanical Engineering Standards Committee). IS0 Standard comprises 18 pages. No part of this standard may be reproduced without the prior permission of IN Deutsches Institut fr Normung e. V., Berlin. leuth Verlag GmbH, D-10772 Berlin, has the exclusive right of sale for German St
4、andards (DIN-Normen). Ref. No. DIN IS0 5682-1 : 1999-07 Sales No. 0408 12.99 English price group 08 Page 1 IS0 5682-1 : 1996 Equipment for crop protection - Spraying equipment Part 1 : Test methods for sprayer nozzles Content Page 1 Scope . 2 Normative reference 3 Definitions 4 Test liquids 5 Appara
5、tus . 6 General test conditions . i 7 Determination of the characteristics of the sprayer nozzles 8 Test report . 2 2 2 2 3 5 5 10 Annexes A Specification of the aluminium oxide . 11 B Model test report for hydraulic energy nozzles in accordance with IS0 5682-1:1996 13 Foreword IS0 (the Internationa
6、l Organization for Standardization) is a worldwide federation of national standards bodies (IS0 member bodies). The work of preparing International Standards is normally carried out through IS0 technical committees. Each member body interested in a subject for which a technical committee has been es
7、tablished has the right to be represented on that committee. International organizations, govern- mental and non-governmental, in liaison with ISO, also take part in the work. IS0 collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standar
8、dization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an Inter- national Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard IS0 5682-1 was prepared by Technical C
9、ommittee ISOTTC 23, Tractors and machinery for agriculture and forestry, Subcommittee SC 6, Equipment for crop protection. This second edition cancels and replaces the first edition (IS0 5682-1 :I 981 1, which has been technically revised. Page 2 IS0 5682-1 : 1996 IS0 5682 consists of the following
10、parts, under the general title Equipment for crop protection - Spraying equipment: - Part I : Test methods for sprayer nozzles - Part 2 : Test methods for hydraulic sprayers - Part 3 : Test method for volume/hectare adjustment systems of agricultural hydraulic pressure sprayers Annex A forms an inte
11、gral part of this part of IS0 5682. Annex B is for information only . 1 Scope This part of IS0 5682 specifies methods for estimating the accuracy of hydraulic sprayer nozzles for hydraulic spraying. It applies only to hydraulic energy nozzles of mounted, towed and self-propelled agricultural sprayer
12、s used for crop protection and fertilization. 2 Normative reference The following standard contains provisions which, through reference in this text, constitute provisions of this part of IS0 5682. At the time of publication, the edition indicated was valid. All standards are subject to revision, an
13、d parties to agreements based on this part of IS0 5682 are encouraged to investigate the possibility of applying the most recent edition of the standard indicated below. Members of IEC and IS0 maintain registers of currently valid International Standards. IS0 5681 :I 992, Equipment for crop protecti
14、on - Vocabulary. 3 Definitions For the purposes of this part of IS0 5682, the definitions given in IS0 5681 apply 4 Test liquids 4.1 Clean water, free from solids in suspension. 4.2 Clean water with 20 g/1 of micro grains of aluminium oxide (according to annex A), renewed after 50 passages. 4.3 Clea
15、n water with the addition, if necessary, of a soluble colouring agent, such as dark coloured aniline dye or a similar product. The surface tension of the mixture shall be (35 I51 mN/m at 20 “C and the agent and concentration necessary for achieving this shall be stated in the test report. Page 3 IS0
16、 5682-1 : 1996 5 Apparatus 5.1 Equipment 5.1.1 Pressure gauge, with an accuracy of k 1 YO at the effective working pressure. 5.1.2 Rubber or plastics hose for each nozzle. 5.1.3 Collecting vessel for each nozzle 5.1.4 Measuring tube with dimensions compatible with the requirements of 7.1.3, or balan
17、ce, for measuring the quantity of liquid collected. 5.1.5 Watch, with an accuracy of +0,5 s. 5.1.6 Scale, with an accuracy of k 1 mm. 5.1.7 Angle meter, with an accuracy of k0.5“. 5.1.8 Device enabling the nozzles to be moved at a given speed 5.1.9 Petri dishes, of diameter 50 mm. 5.1.10 Microscope,
18、 with a measuring accuracy of 10 pm 5.1.11 Photographic device with electronic flash. 5.1.12 Liquid or solid suitable for collecting the drops. 5.2 Distribution bench, equipped with a device allowing collection of the liquid when the test pressure is stabilized and the sprayer nozzles are supplied n
19、ormally (see figure 1 for an example). Components of the bench shall conform to the requirements given in 5.2.1 and 5.2.2. 5.2.1 Groove characteristics The walls of the grooves shall be vertical. The upper edges of the walls shall form a plane with, in the longitudinal direction (perpendicular to th
20、e grooves), a tolerance of k 1 % (IO mm/l m) on the horizontal and, in the lateral direction (parallel with the grooves), a tolerance of f2 % (see figure 2). The maximum thickness of the groove walls shall be 4 mm. The distance between two consecutive ridges shall be (50 +0,5) mm. The minimum height
21、 of the vertical walls of the grooves shall be at least equal to twice the width of the grooves. In the case of a distribution bench composed of grooves spaced at 25 mm intervals, these conditions apply by comparing two adjacent grooves with one 50 mm groove. The total width of the distribution benc
22、h shall not be affected by the sum of the tolerances permitted for the upper part of each ridge. Page 4 IS0 5682-1 : 1996 Dimensions in millimetres Figure 1 - Example of a distribution bench Figure 2 - Groove characteristics Page 5 IS0 5682-1 : 1996 5.2.2 Upper part of the walls The upper part of th
23、e walls is formed by a symmetrical chamfered edge with may be rounded off and shall have the following characteristics: althe height of the chamfered edge shall be at least equal to three times the thickness of the wall; bkhe thickness of the chamfered edge at its upper part shall be not greater tha
24、n 1 mm; clthe rounding-off radius shall be not greater than 0,5 mm; d)no point of the ridges shall be more than 2 mm above or below the mean plane of the ridges. 6 General test conditions All the operational data and test parameters shall be stated in the test report, of which an example is given in
25、 annex B. 6.1 Temperature and relative humidity The temperature of the test liquid and the air temperature of the test premises shall be between 10 “C and 25 “C during the test. The relative humidity of the test premises shall be normally not less than 50 %. The temperature and the relative humidity
26、 shall be stated in the test report. 6.2 Pressures During the test period, the pressure shall not vary by more than f 2,5 % of the test pressure. The test pressures shall be stated in the test report. The pressure shall be taken downstream of the anti-drip device, the measurement being taken without
27、 the nozzle fi Iter. 7 Determination of the characteristics of the sprayer nozzles For each test, the general test conditions shall be in conformity with those specified in clause 6. 7.1 Uniformity of discharge rate of the nozzles 7.1.1 Sampling Take 20 complete nozzles of the same type at random. S
28、tate the sampling conditions in the test report and note, in particular, the size of the stock, the place of sampling, etc. In addition, state in the test report the complete designation of the nozzles, including the discs and tips for the cone spray nozzles. The sample shall be taken by a person au
29、thorised by the test centre. This person shall also take a second sample, in the same conditions, which will be kept in the test centre in case of control. The two samples shall be taken out of a lot of at least 200 nozzles. 7.1.2 Test liquid Use the test liauid described in 4.1 Page 6 IS0 5682-1 :
30、1996 7.1.3 Measurements Measure, for each complete nozzle, the volume discharged at the test pressure of 0,3 MPa (3 bar) with an error of less than 1 YO. The measuring time, measured with a watch (5.1.5) and with an error of less than 1 s, shall be greater than or equal to 60 s. 7.1.4 Results The re
31、sults shall be presented in the test report in the form of a graph or table in which the discharge rate of each nozzle is expressed as a percentage of the mean discharge rate of 20 complete nozzles. 7.2 Variations in discharge rate according to pressure Perform this test with a nozzle for which the
32、discharge rate is closest to the mean value determined in 7.1. 7.2.1 Test liquid Use the test liquid described in 4.1 7.2.2 Pressure Perform the tests at the maximum and minimum pressures indicated by the manufacturer and at least two intermediate pressures. The differences between two consecutive p
33、ressures shall be less than or equal to 0,5 MPa (5 bar). 7.2.3 Measurements Measure the discharge rate, in litres per minute, at each of the pressures indicated in 7.2.2, with an error of less than 1 %. The measuring time, measured with a watch (5.1.5) and with an error of less than 1 s, shall be gr
34、eater than or equal to 60 s. 7.2.4 Results The results shall be presented in the test report in the form of either a graph in which the discharge rate is indicated on the y-axis and the pressure on the x-axis, or a table. 7.3 Distribution of the spray Perform this test with a nozzle for which the di
35、scharge rate is closest to the mean value determined in 7.1. 7.3.1 Test liquid Use the test liquid described in 4.1. 7.3.2 Pressure Perform the test at the maximum and minimum pressures stated by the manufacturer and at least two intermediate pressures. 7.3.3 Position of the nozzle During the test,
36、the nozzle shall be positioned vertically above a ridge of the distribution bench and in its normal working attitude in order to direct its spray onto the bench. If the manufacturer indicated one particular position, the test shall be made in this position. Page 7 IS0 5682-1 : 1996 If the manufactur
37、er states an optimum height for use, carry out the test at the height stated and 150 mm above and below this height. If the manufacturer does not indicate any heights, carry out the tests at the following heights: 400mm. 500mm. 600mm, 700mm and, if necessary, at 300mm and 800mm. The height shall be
38、measured between the edge of the ridge and the orifice of the nozzle. Flat spray nozzles shall be positioned for the test so that the longest dimension of the spray pattern is perpendicular to the grooves. Cone nozzles shall be tested in the following configurations (see figure 3): a)in their initia
39、l configuration; b)in a second configuration resulting from a 90“ rotation of the nozzle disc or nut in its assembly; c) when the spiral can turn in relation to the disc with the nozzle reassembled with the swirl plate turned through 90“ in relation to configuration b). I I I l ai 90“ / b) Figure 3
40、- Configuration for testing cone nozzles 7.3.4 Measurements Stop the test as soon as the amount of liquid collected in one of the tubes has reached 90 ?O of its capacity. Record the quantities collected in each tube. 7.3.5 Results Represent the distribution of the spray by a graph or a table indicat
41、ing the values as percentages of the mean quantity of liquid collected in all the grooves. 7.4 Variations in flow rate and spray distribution due to abrasion (accelerated wear test) This test does not prejudge the life of the nozzle in the actual conditions of use, but is used to compare the resista
42、nce of the nozzles to wear and the resulting deterioration in their distribution. It shall be carried out on five nozzles, for which the discharge rate is closest to the mean value determined in 7.1 7.4.1 Test liquid Use the test liquid described in 4.2. The temperature of the liquid shall be (20 13
43、) “C throughout the test. Page 8 IS0 5682-1 : 1996 Ensure that the abrasive material is always well dispersed throughout the liquid (for example, by means of a controlled escape of compressed air with a pressure such that after 5 min of operation, there is no longer any deposit at the bottom of the
44、tank). Ascertain, if need be by a preliminary test, that the test liquid retains its abrasiveness in relation to the material of the nozzles throughout the duration of the test defined in 7.4.3. If it does not, replace the abrasive liquid as often as necessary. NOTE - A preliminary test can be carri
45、ed out using identical metering orifices from the same batch and manufactured from a suitable material for the nozzles being tested, measuring the increase in discharge rate after passing through a given volume of the test liquid at the specified pressure. 7.4.2 Test pressure The test pressure, pt,
46、shall be chosen as follows, according to the maximum pressure, pc, recommended by the supplier: a)0,05 MPa cps 4 0,3 MPa: pt = 0,l MPa b)0,3 MPa 63 pm from O to 2 YO from 63 pm to 45 pm from 5 % to 15 Yo from 45 pm to 1 O pm from 60 YO to 75 % 10pm from 10 % to 30 Yo c) Medium primary crystal size:
47、= 6 pm A.4 Instructions No special measures of security. A.5 Protective measures, storing and operation a) Technical protective measures: dry storing, otherwise tendency to agglomerate. b Personal security equipment: breathing equipment: none; eye equipment: none; hand protection: none; others: dust
48、 guard at the most. c) d) Fire and explosion protection: not necessary. e) Work hygiene: no special demands except normal hygiene. Waste disposal: through permitted dust tip according to local governmental prescriptions Page 13 IS0 5682-1 : 1996 A.6 Measures at accidents and burning After spilling,
49、or running out or gas leakage, absorption with normal mechanical purifying agents. A.7 Details to toxicology No toxic effects known. A.8 Details to ecology No influence known. Annex B (i nf or mat ive) Model test report for hydraulic energy nozzles in accordance with IS0 5682-1 :I996 B.l General Orderer of the test: Test reference number: . Name and address of the testing laboratory: . . . Name of the engineer in charge of the test: Name of the technician in charge of the test: . . . Complete designation of the nozzles: NOTE - For cone nozzles, give appropriate information for the
