Normy

Obsah

ČSN EN ISO 5211 This document specifies requirements for the attachment of part-turn actuators, with or without gearboxes, to industrial valves. The attachment of part-turn actuators to control valves in accordance with the requirements of this document is subject to an agreement between the supplier and the purchaser. This document specifies: - flange dimensions necessary for the attachment of part-turn actuators to industrial valves [see Figures 1 a) and 1 c)] or to intermediate supports [see Figures 1 b) and 1 d)]; - driving component dimensions of part-turn actuators necessary to attach them to the driven components; - reference values for torques for interfaces and for couplings having the dimensions specified in this document. The attachment of the intermediate support to the valve is beyond the scope of this document.

Obsah

ČSN EN 12541 This document is applicable to flushing valves for WCs and valves for urinals, with automatic hydraulic closure, intended for: - WC pans EN 997; - single flush urinals EN 13407; - siphon acting urinals EN 13407. It does not apply to no-contact detection valves. It is intended to specify: - marking and identification, physico-chemical, dimensional, leaktightness, pressure behaviour, hydraulic, mechanical endurance and acoustic characteristics of flushing valves for WCs and urinals with automatic closure; - test methods used to verify these characteristics; - and to determine requirements for the atmospheric interrupter which shall be an integral part of the WC flushing valve.

Obsah

ČSN EN IEC 62541-24 This part of IEC 62541 specifies an OPC UA information model to expose information, at what dates and times specific actions are executed by the OPC UA Server. Those schedules can optionally also be manipulated via the information model.

Obsah

ČSN EN 9300-210 From Clause 8 to Clause 15, the scope includes: - Management Information; - Product Design; - Change Management; - Documents; - Application of PDM-specific metadata (in accordance with EN 9300-021); - Definition of PDM-specific metadata for Archive Information Packages (AIP) (Annex A). Common Meta Data archive package requirements defined in accordance with EN 9300-021. This document does not attempt to specify how to create an OAIS/LOTAR information package. Nor does it address common issues in the archive domain, such as: snapshot vs. incremental archival methods (which are determined as part of the implementation of an archive system), or package-to-package linkages (Meta Data WG) or how to identify metadata for an archival package (Meta Data WG). Integration of PDM metadata with other domain and common metadata will be in EN 9300-021.

Obsah

ČSN EN 50483-3 ed. 2 The EN 50483 series applies to overhead line fittings for tensioning, supporting and connecting aerial bundled cables (ABC) of rated voltage U0/U (Um): 0,6/1 (1,2) kV. This document applies to tensioning devices consisting of tension and suspension clamps, and tension and suspension assemblies used for the installation of ABC with either insulated or bare neutral messenger. The tension and suspension clamps are designed to be installed on neutral conductors of ABC defined in HD 626 S2. Tests described in this document are type tests.

Obsah

ČSN EN IEC 60352-7 ed. 3 This part of IEC 60352 is applicable to spring clamp connections made with stripped wire of the following types and sizes according to IEC 60228 or IEC 60189-3, without further preparation (later described "unprepared"): - solid conductors (e.g. class 1 of IEC 60228) of 0,32 mm to 3,7 mm nominal diameter (0,08 mm2 to 10 mm2 cross section), or - stranded conductors (e.g. class 2 of IEC 60228) of 0,08 mm2 to 10 mm2 cross-section, or - flexible conductors (e.g. class 5 or 6 of IEC 60228) of 0,08 mm2 to 10 mm2 cross-section, for use in electrical and electronic equipment and components. Information on materials and data from industrial experience is included in addition to the test procedures to provide electrically stable connections under prescribed environmental conditions. The object of this document is to determine the suitability of spring clamp connections under specified mechanical, electrical and atmospheric conditions. NOTE - IEC Guide 109 advocates the need to minimize the impact of a product on the natural environment throughout the product life cycle. It is understood that some of the materials permitted in this document can have a negative environmental impact. As technological advances lead to acceptable alternatives for these materials, they will be eliminated from this document.

Obsah

ČSN EN IEC 61757-1-4 Tato norma definuje terminologii, strukturu a metody měření distribuovaných optických vláknových senzorů pro absolutní měření deformace na základě spektrální korelační analýzy Rayleighova zpětného rozptylu v jednovidových vláknech, kde vlákno je distribuovaným prvkem pro měření deformace v měřicím rozsahu od přibližně 10 m do desítek km. Norma se také vztahuje na hybridní senzorové systémy, které kombinují výhody Brillouinova a Rayleighova jevu zpětného rozptylu pro dosažení optimální kvality měření. Norma rovněž specifikuje nejdůležitější vlastnosti a výkonnostní parametry těchto distribuovaných optických vláknových senzorů pro měření deformace a definuje postupy pro měření těchto vlastností a parametrů. Tato norma není použitelná pro bodová měření nebo pro dynamické měření deformace. Distribuovaná měření deformace využívající Brillouinův rozptyl v jednovidových vláknech jsou uvedena v IEC 61757-1-2. Nejvýznamnější aplikace této techniky měření deformace jsou uvedeny v příloze A, zatímco příloha B poskytuje stručný popis základního principu měření.

Obsah

ČSN EN IEC 63350 This document specifies generic requirements for creating a digital system that is used for measuring the characteristics of visually detectable performance, such as browning intensity and lightness. It defines the metrological requirements of this digital system and demonstrates the procedures for compliance. The digital system contains the measuring instrument, the software, and the reference materials necessary to realize the measurement process. References to this document can be made by a customer when specifying the digital system and by the suppliers when specifying products offered. Interested parties can agree to use this document as an input for satisfying measurement management system requirements in any activities.

Obsah

ČSN EN 18082 This document specifies a method for the analysis of pesticide residues in foods of animal origin with a low fat content, such as meat/muscle, egg or milk by LC-MS/MS. Because of the low material requirements for miniaturized processing and the few work steps, the process is particularly time and cost-saving with high reliability and effectiveness. The method has been collaboratively studied on a number of commodity/pesticide combinations. Precision data are summarized in Table B.1. Guidelines for calibration are outlined in CEN/TS 17061:2019.

Obsah

ČSN EN ISO 1825 This document specifies the dimensions and construction of, and requirements for, four types of hose and hose assembly for use in all operations associated with the ground fuelling and defuelling of aircraft. All four types are designed for: a) use with petroleum fuels having an aromatic-hydrocarbon content not exceeding 30 % by volume; b) operation within the temperature range of -30 °C to +65 °C and such that they will be undamaged by climatic conditions of -40 °C to +70 °C when stored in static conditions. For LT hose, the temperature range of -40 °C to +65 °C and such that they will be undamaged by climatic conditions of -48 °C to +70 °C when stored in static conditions; c) operation at up to 2,0 MPa (20 bar) maximum working pressure, including surges of pressure which the hose can be subjected to in service.

Obsah

ČSN EN ISO 18704 This document specifies requirements and provides recommendations for the pre-examination process of cell-free DNA (cfDNA) from body fluid specimens other than blood, including but not limited to the collection, handling, storage, transport, processing and documentation of human body fluids, such as urine, pleural effusions, ascites, cerebrospinal fluid (CSF), and saliva, intended for cfDNA examination. Processing includes multiple steps, such as centrifugation for specimen purification and isolation of cfDNA. This document does not cover dedicated measures for cytohistological analysis of nucleated cells derived from body fluid, nor measures for preserving and handling of pathogens, and other bacterial or whole microbiome DNA in body fluids described. Dedicated measures for preserving circulating cell-free DNA (ccfDNA) from blood are covered in ISO 20186-3. This document is applicable to medical laboratories, health institutions including facilities collecting and handling specimens, laboratory customers, in vitro diagnostic examination developers and manufacturers, biobanks, institutions and organizations performing biomedical research, and regulatory authorities. NOTE - International, national or regional regulations or requirements can also apply to specific topics covered in this document.