Normy

Obsah

ČSN EN ISO 1 This document defines the concepts of a reference temperature and the standard reference temperature and specifies the standard reference temperature value for the specification of geometrical and dimensional properties of an object. Some examples of geometrical and dimensional properties include size, location, orientation (including angle), form and surface texture of a workpiece. This document is also applicable to the definition of the measurand used in verification or calibration.

Obsah

ČSN EN ISO 4015 This document specifies the characteristics of hexagon head bolts with reduced shank (shank diameter approximately equal to pitch diameter), in steel and stainless steel, with metric coarse pitch threads M3 to M20, and with product grade B. If in certain cases other specifications are requested, property classes and stainless steel grades can be selected from ISO 898-1 or ISO 3506-1, and dimensional options from ISO 888 or ISO 4753. NOTE - For hexagon head bolts with full shank, see ISO 4014.

Obsah

ČSN EN ISO 4016 This document specifies the characteristics of hexagon head bolts, in steel, with metric coarse pitch threads M5 to M64, and with product grade C. If in certain cases other specifications are requested, property classes can be selected from ISO 898-1 and dimensional options from ISO 888 or ISO 4753.

Obsah

ČSN EN ISO 4018 This document specifies the characteristics of hexagon head screws, in steel, with metric coarse pitch threads M5 to M64, and with product grade C. If in certain cases other specifications are requested, property classes can be selected from ISO 898-1, and dimensional options from ISO 888 or ISO 4753.

Obsah

ČSN EN ISO 22479 Norma specifikuje metody hodnocení odolnosti materiálů nebo výrobků proti vlhké atmosféře obsahující oxid siřičitý. Tyto metody jsou použitelné ke zkoušení kovů a slitin, kovových a jiných anorganických povlaků i organických povlaků. Norma nahrazuje ČSN EN ISO 3231 (67 3096) z listopadu 1998 a ČSN ISO 6988 (03 8130) z listopadu 1994. Sloučením obou norem, z nichž jedna platila pro zkoušení nátěrů a druhá pro zkoušení materiálů a kovových a anorganických povlaků, vznikl jednotný dokument s obecnou platností. Nově jsou zařazeny přílohy B (kontrola funkce komory) a C (doplňující informace).

Obsah

ČSN EN ISO 6149-1 This document specifies dimensions for metric ports for use with the adjustable and non-adjustable stud ends as described in ISO 6149-2 and ISO 6149-3. Ports in accordance with this document can be used at working pressures up to 63 MPa (630 bar1)) for non-adjustable stud ends and 40 MPa (400 bar) for adjustable stud ends. The permissible working pressure depends upon port size, materials, design, working conditions, application etc. See ISO 6149-2 and ISO 6149-3 for pressure ratings. NOTE - The Introduction of this document gives recommendations for ports and stud ends to be used for new designs in hydraulic fluid power applications.

Obsah

ČSN ISO 2537 Tato norma specifikuje požadavky na provoz, konstrukci, kalibraci a údržbu zařízení s rotačním prvkem určených pro měření rychlosti proudění v otevřených korytech. ISO 748 poskytuje informace o použití těchto zařízení.

Obsah

ČSN ISO 3455 Tento dokument specifikuje postup kalibrace mechanických, elektromagnetických a akustických měřidel rychlosti proudění vody používaných pro měření bodové rychlosti proudící vody. Tato metoda vyžaduje vlečení přístroje klidnou vodou v přímé otevřené nádrži. Tento dokument zahrnuje měřicí přístroj, postup kalibrace, metodu prezentace výsledků a nejistoty spojené s metodou.

Obsah

ČSN EN ISO 7622-2 This document specifies a method for the determination of the tensile strength, in the longitudinal, of steel cords constituting the carcass of conveyor belts. It applies exclusively to conveyor belts with a steel carcass. NOTE - A method for the determination of elongation is specified in ISO 7622 1.

Obsah

ČSN EN 13732 This document specifies requirements for design, performance, safety and hygiene of refrigerated bulk milk coolers and the related methods of test. NOTE - The informative Annex K gives some elements regarding the estimation and calculation of energy consumption. This document deals with all significant hazards, hazardous situations and events relevant to bulk milk coolers on farm, when they are installed, used and maintained as intended by the manufacturer (see informative Annex A). It applies to refrigerated bulk milk tanks with air-cooled condensing units and automatic control intended for installation on farms or at milk collection points. It applies to tanks for two milkings (24 h), four milkings (48 h) and six milkings (72 h), in which the cooling takes place totally (non-pre-cooled milk) or partially (in case of pre-cooled milk) within the tank. It also applies to tanks in combination with a continuous system of milking (e.g. milking with robot). This document does not cover: - mobile tanks; - tanks intended to be tilted for drainage; - equipment for delivering the milk to the tank; - equipment for pre-cooling of the milk; - the hazards due to the use of other energy than electrical energy; - pressure aspect of vacuum tanks (tank of which the inner vessel is designed to operate at a pressure below atmospheric pressure); - calibration requirements for the measurement of the milk volume. This document is not applicable to bulk milk coolers on farms which are manufactured before the date of its publication as EN.

Obsah

ČSN EN 16603-50-22 This document identifies the clauses and requirements modified with respect to the standard CCSDS 132.0-B-2, TM Space Data Link Protocol, Issue 2, September 2015, for application in ECSS.