ISO 19932-2:2013 pdf download.Equipment for crop protection -Knapsack sprayers -Part 2:Test methods.
This part of Iso 19932 specifies test methods for the verification of requirements of ISO 19932-1 for knapsack sprayers carried on the back or shoulder of the operator for use with plant protection products.
It is applicable to lever-operated knapsack sprayers, knapsack compression sprayers and knapsack sprayers driven by an engine or electric motor using hydraulic pressure atomization of the spray liquid, with a nominal volume of more than 3 1 for their intended use primarily in agriculture and horticulture.
It does not apply to knapsack mistblowers covered by ISO 28139.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 568 1:1992, Equipment for crop protection — Vocabulary
ISO 19932-1:2013, Equipment for crop protection — Knapsack sprayers — Part 1: Safety and
environmental requirements
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 5681 and ISO 19932-1 apply.
4 Test liquids and equipment
4.1 Water, clean and free from solids.
4.2 Preconditioning device, allowing holding of the sprayer and the operation of the lever-operated knapsack sprayer pump lever continuously. The stroke and frequency shall be adjustable. An example is given in Annex A.
4.3 Shut-off device test equipment, consisting of a frame to fix the hand-held part of the shut-off device and a unit for moving the shut-off device control, e.g. valve lever, to open it periodically with an induced flow at the prescribed rate and pressure. The stroke shall be adjustable. An example is given in Annex 13.
4.4 Strap test device, capable of dropping the sprayer, vertically guided, onto each strap from a height of 200 mm using a horizontal restraining bar that is 75 mm in diameter. The device is to be capable of testing sprayers with one or two upper and/or lower fixing points. An example is given in Annex C. Other devices with equivalent performance can be used.
WARNING — This test device presents an element of risk when the test is underway. All personnel shall either be kept out of the test area or otherwise protected from hazards such as parts displaced from the sprayer on test.
4.5 Drop test device, to drop the upright sprayer, vertically guided, from a height of (600 ± 20) mm onto a flat level surface, 800 mm x 800 mm x 50 mm in height, made of high density polythene (HDPE) or hard wood placed on a flat level floor. The device shall not affect the impact force of the dropped sprayer. An example is given in Annex D. Other devices with equivalent performance can be used.ISO 19932-2 pdf download.