BS ISO 15727:2020 pdf free.UV-C devices一Measurement of the output of a UV-C lamp. This document specifies the measurement of the output of a UV-C lamp, types of UV-C lamp, lamp ballast, and safety issues. It is applicable to the output measurement of linear UV-C disinfection lamps. This document specifies a measurement method for evaluating output power of UV-C lamps installed in heating, ventilation and air conditioning (HVAC) systems. The method includes the simulation measurement of UV-C output power of UV-C lamps under various temperatures and various air velocities, and under conditions that the axial direction of the lamp is parallel or perpendicular to the air flow direction. It can reliably evaluate and compare the UV-C output power of UV-C lamps in the ultraviolet germicidal irradiation (UVGI) device based on the testing results. If the microbial inactivation rate of a particular UVGI device equipped with the same type of UV-C lamp is known, the microbial inactivation rate of the UVGI device at various temperatures and at various air velocities can be evaluated. 2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For…

ISO 2811-1:2016 pdf free download.Paints and varnishes Determination of density Part 1:Pycnometer method Peintures et vernis — Determination de Ia masse volumique — Pa rtie 1: Méth ode pycnométrique. 8.2 Determination If working with a temperature-controlled chamber (see A), put the pycnometer (i) and the test sample next to the balance (±Z) in the chamber maintained at the specified or agreed temperature. If working with a water bath (see A) rather than a temperature-controlled chamber, put the pycnometer and the test sample in the water bath, maintained at the specified or agreed temperature. Allow approximately 30 mm for temperature equilibrium to be reached. Using the thermometer (), measure the temperature, tT, of the test sample. Check throughout the determination that the temperature of the chamber or water bath remains within the specified limits. Weigh the pycnometer and record the mass, ml, to the nearest 10 mg for 50 cm3 to 100 cm3 pycnometers and to the nearest 1 mg for pycnometers less than 50 cm3 in volume. Fill the pycnometer with the product under test, taking care to avoid the formation of air bubbles. Place the lid or stopper of the pycnometer firmly in position and wipe off any excess…

ISO 2903:2016 pdf free download.ISO metric trapezoidal screw threads Tolerances Filetages métriques trapézoidaux ISO — Tolerances. This ISO 2903 specifies a tolerance system for metric trapezoidal screw threads in accordance with Iso 2902. The tolerances refer to the design profile in accordance with ISO 2901. The tolerance system does not apply to trapezoidal screw threads with special requirements on axial displacement, for example, machine tool lead and feed screws and nuts. 2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 965-1, ISO general purpose metric screw threads — Tolerances — Part 1: Principles and basic data ISO 2901, Iso metric trapezoidal screw threads — Basic and design profiles ISO 2902, Iso metric trapezoidal screw threads — General plan 3 Terms and definitions For the purposes of this document, the terms and definitions given in 150 5408 apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses: — IEC Electropedia: available at http://www.electropedia.org/ —…

ISO 3040:2016 pdf free download.Geometrical product specifications (GPS) Dimensioning and tolerancing Cones Spécifi cation géométrique des produ its (GPS) — Cotation et tolérancement — Cones. This ISO 3040 specifies graphical indication applicable to a cone (right-angle circular cones) to define its dimensioning or to specify its tolerancing. For the purposes of this International Standard, the term “cone” relates to right-angle circular cones only (any intersection by a plane perpendicular to the axis of the nominal cone is a circle). NOTE 1 For simplicity, only truncated cones have been represented in this International Standard. However, this International Standard can be applied to any type of cone within its scope. NOTE 2 This International Standard is not intended to prevent the use of other methods of dimensioning and tolerancing. 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 1119:20 11, Geometrical product specifications (GPS) — Series of conical tapers and taper angles ISO 81714-1, Design of graphical symbols for use in the technical documentation of…

ISO 3466:2016 pdf free download.Machine taper pin reamers with parallel shanks Alésoirs a machine pour trous degoupilles coniques, a queue cylindrique. This ISO 3466 lays down the dimensions of machine taper pin reamers with parallel shanks. It covers only metric dimensions, which are the only recommended dimensions in the future for these types of reamers. The reamers have been designed to produce holes for taper pins manufactured to ISO 2339, in the range of 2 mm to 12 mm nominal diameter. Unless otherwise stated, these reamers will be right-hand cutting. The flutes may be straight or left-hand spiral at the option of the manufacturer. Hand taper pin reamers are dealt with in ISO 3465, and machine taper pin reamers with Morse taper shanks in ISO 3467. 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 4203, Parallel shank tools — Driving tenons and sockets — Dimensions 3 Driving tenons The dimensions of the driving tenons for machine taper pin reamers with parallel shanks,…

ISO 3536:2016 pdf free download.Road vehicles Safety glazing materials Vocabulary Véhicules routiers — Vii rages de sécurité — Vocabulaire. This ISO 3536 defines terms relating to safety glazing materials for road vehicles. 2 Terms and definitions For the purposes of this document, the Following terms and definitions apply. 2.1 safety glazing material glazing material consisting of organic and/or inorganic materials so constructed or treated to minimize the likelihood of injury to persons as a result of contact with these safety glazing materials when used in a vehicle and which complies with specified requirements for visil)ility, strength, and durability 2.2 toughened safety glass glazing material consisting of a single layer of glass which has been subjected to special thermal or chemical treatment to increase its mechanical strength and to condition its fragmentation after shatter 2.3 laminated safety glass glazing material consisting of two or more layers olgiass held together by one or more inter! ayers (2A) Note 1 to entry: The following two types are recognized: — ordinary: when none of the layers of glass, of which it is composed, has l)eefl treated, i.e. normal annealed glass; — treated: when at least one of the layers of glass, of which it…

ISO 3764:2016 pdf free download.Timekeeping instruments Movements Types, dimensions and nomenclature Instruments horaires — Mouvements — Formes, dimensions et nomenclature. This ISO 3764 specifies the types and fitting dimensions of mechanical and electromechanical watch-movements. This International Standard is applicable to the five following types of movements: — Type 1: round; — Type 2: shaped round; — Type 3: round with double cutting; — Type 4: 5 ½”; — Type5:6¾x8”. 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 2 86-1, Geometrical product specifications (GPS) — ISO code system for tolerances on linear sizes — Part 1: Basis of tolerances, deviations and fits ISO 6426-2, Horological vocabulary — Part 2: Technical and commercial definitions 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 28 6-1 and ISO 6426-2, and the following apply. 3.1 Diameters of movements 3.1.1 casing diameter d1 diameter of a plate, or an equivalent part or an assembly unit, by which the movement…

ISO 3917:2016 pdf free download.Road vehicles Safety glazing materials Test methods for resistance to radiation, high temperature, humidity fire and simulated weathering Véhicules routiers — Vitrages de sécurité — Méth odes d’essai de résistance a u rayon n em en t, a ux temp era tu res élevées, a I ‘h urn idi té, a u feu et aux conditions climatiques simulées. 10.2 Exposure apparatus The exposure apparatus3) shall use a long arc xenon lamp as the source of irradiation, which shall comply with ISO 4892-2:2013, Method A (artificial weathering). The long arc xenon lamp is advantageous in that it can, when correctly filtered and maintained, yield a spectrum most closely approximating that of natural sunlight. To this end, the quartz xenon burner tube shall be fitted with suitable borosilicate glass optical filter(s)4). The xenon lamps employed shall be operated from a suitable 50 Hz or 60 Hz power supply through suitable reactance transformers and electrical equipment. The exposure apparatus shall include equipment necessary for measuring and/or controlling the following: a) irradiance; b) black standard temperature; c) water spray; d) operating schedule or cycle. The exposure apparatus shall be made from inert materials which do not contaminate the water employed…

ISO 4207:2016 pdf free download.Counterbores with Morse taper shanks and detachable pilots Outils a lamer a queue cone Morse et pilote amovible. This ISO 4207 specifies the dimensions of counterbores with Morse taper shanks and detachable pilots for general use. NOTE Figure 1 is diagrammatic only and is not intended to indicate details of design. 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 296, Machine tools — SelJ-holding tapers for tool shanks 3 Dimensions The dimensions for the counterbores, Morse taper shanks and detachable pilots are given in Table 1 and shown in Figure 1. It specifies dimensions in metric units only, these being regarded as the only recommended dimensions in the future. 4 Tolerances The tolerances relating to the counterbores, Morse taper shanks and detachable pilots are as follows: — cutting diameter d1: z9; — pilot diameter d2: e8; — pilot hole diameter d3: h8;ISO 4207:2016 pdf free download.

ISO 4204:2016 pdf free download.Countersinks, 900, with Morse taper shanks and detachable pilots Outils (1 chanlieiner (1 9Q0, ( queue cone Morse et pilote amovible. This ISO 4204 specifies the dimensions of 90° countersinks with Morse taper shanks and detachable pilots for general use. Figure 1 is diagrammatic only and is not intended to indicate details of design. 2 Normative references ‘l’he 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 ol the relerenced document (including any amendments) applies. ISO 296, Machine tools — Selj4iolding tapers for tool shanks 3 Dimensions The dimensions for 90° countersinks with Morse taper shanks and detachable pilots are given in Table .1. It specifies dimensions in metric units only, these being regarded as the only recommended dimensions in the future. 4 Tolerances The tolerances relating to the countersink, Morse taper shanks and detachahle pilots are as follows: — cutting diameter d1 :z9; pilot diameter d2: e8; — pilot hole diameter d3: H8;ISO 4204:2016 pdf free download.