Normy

Obsah

ČSN EN IEC 61158-3-2 ed. 3 This part of IEC 61158 provides common elements for basic time-critical messaging communications between devices in an automation environment. The term "time-critical" is used to represent the presence of a time-window, within which one or more specified actions are required to be completed with some defined level of certainty. Failure to complete specified actions within the time window risks failure of the applications requesting the actions, with attendant risk to equipment, plant and possibly human life.

Obsah

ČSN EN IEC 61158-3-24 ed. 2 This part of IEC 61158 provides common elements for basic time-critical messaging communications between devices in an automation environment. The term "time-critical" is used to represent the presence of a time-window, within which one or more specified actions are required to be completed with some defined level of certainty. Failure to complete specified actions within the time-window risks failure of the applications requesting the actions, with attendant risk to equipment, plant and possibly human life.

Obsah

ČSN EN IEC 61158-6-4 ed. 4 The fieldbus application layer (FAL) provides user programs with a means to access the fieldbus communication environment. In this respect, the FAL can be viewed as a "window between corresponding application programs." This part of IEC 61158 provides common elements for basic time-critical and non-time-critical messaging communications between application programs in an automation environment and material specific to Type 4 fieldbus. The term "time-critical" is used to represent the presence of a time-window, within which one or more specified actions are required to be completed with some defined level of certainty. Failure to complete specified actions within the time window risks failure of the applications requesting the actions, with attendant risk to equipment, plant and possibly human life.

Obsah

ČSN EN IEC 61158-4-4 ed. 4 The data-link layer provides basic time-critical messaging communications between devices in an automation environment. This protocol provides a means of connecting devices through a partial mesh network, such that most failures of an interconnection between two devices can be circumvented. In common practice the devices are interconnected in a non-redundant hierarchical manner reflecting application needs.

Obsah

ČSN EN 17694-1 This document specifies general requirements, minimum performance requirements and test procedures for open channel instrumentation used to determine either volumetric flow-rate and/or total volume passed of waters in artificial open channels. It covers the following technology categories: - Level sensors with associated electronics designed to be used with a conventional gauging structure. (The requirements and test procedures for gauging structures, such as weirs and flumes, are excluded. The stage discharge characteristics for many of these structures are established and published in national and international standards). - Water velocity sensors. - Integrated velocity area instruments comprising level and velocity sensors that may be separate or combined in a single assembly. - Velocity sensors that determine the mean water velocity through a channel. It is recognized that for some OCIs, certain tests cannot be carried out.

Obsah

ČSN EN 17694-2 This document specifies general requirements, minimum performance requirements and test procedures for instrumentation used to measure either volumetric flow-rate and/or total volume passed of water in closed conduits. It covers all closed conduit instrument (CCI) technologies intended to operate in closed pressurized pipes and partially filled pipes. Requirements are expressed in volumetric units which may be converted to mass using the density of the water. It is recognized that for some CCIs certain tests cannot be carried out. The data obtained from the testing of CCIs in accordance with the requirements of the Measuring Instruments Directive [1] or EN ISO 4064-1 [2] can be used to meet, in part, the requirements specified in this document. However, for the avoidance of doubt, compliance with the requirements of this document does not equate

Obsah

ČSN EN ISO 18246 This International Standard specifies safety requirements for conductive connection to an external electric power supply of electrically propelled mopeds and motorcycles. It is not applicable to vehicles not in normal conditions, such as damaged vehicles and vehicles which have mechanical and/or electrical failure. It applies only to on-board charging systems between the plug or vehicle couplers and RESS circuits. The safety requirements for vehicles not connected to external power supply are specified in ISO 13063. NOTE - This International Standard does not contain requirements for bidirectional power flow. It does not provide comprehensive safety information for manufacturing, maintenance and repair personnel.

Obsah

ČSN EN 4863 This document specifies requirements for immersion suits for use by helicopter crew members and passengers in the event of a ditching or water impact, to ensure minimum levels of performance. It applies to immersion suits for use by adults only.

Obsah

ČSN EN IEC 61076-3-126 Tato norma se vztahuje na 5pólové obdélníkové konektory pro elektrické napájení do 16 A na pól. Tyto konektory se skládají z pevných i volných konektorů, ať už rozebíratelných, nebo nerozebíratelných. Norma využívá obecné funkční principy systému západkového spojení pouzdra konektoru popsaného v IEC 61076-3-117 se stupněm krytí IP65/IP67 podle IEC 60529 pro drsné aplikace. Vidlice mají kolíkové kontakty čtvercového průřezu se stranou délky 1 mm. Konektory podle této normy jsou bez vypínací schopnosti COC podle IEC 61984, proto nejsou určeny ke spojování nebo rozpojování při běžném použití pod napětím nebo pod zátěží.

Obsah

ČSN EN ISO 8586 This International Standard specifies criteria for the selection and procedures for the training and monitoring of selected assessors and expert sensory assessors. It supplements the information given in ISO 6658.

Obsah

ČSN EN 17037+A1 (73 0582) This document specifies elements for achieving, by means of natural light, an adequate subjective impression of lightness indoors, and for providing an adequate view out. In addition, recommendations for the duration of sunshine exposure within occupied rooms are given. This document gives information on how to use daylighting to provide lighting within interiors, and how to limit glare. This document defines metrics used for the evaluation of daylighting conditions and gives principles of calculation and verification. These principles allow to address the issue of variability of daylight over the days and the year. This document applies to all spaces that may be regularly occupied by people for extended periods except where daylighting is contrary to the nature and role of the actual work done. The specification of lighting requirements for humans in indoor work places including visual tasks are given in EN 12464-1 and are not part of this document.

Obsah

ČSN EN 16479 This document specifies general requirements, performance requirements and conformity test procedures for automatic sampling devices (samplers) for water and waste water that: - sample water and waste water from non-pressurized (i.e. open to atmosphere) channels or vessels; - sample over extended periods to collect discrete or composite samples based on time, event or flow proportional sampling. It does not include sampling systems built into online and in-line analysers. The general requirements include functional facilities that samplers need to meet users' applications and information that needs to be included in associated documents. The test procedures specify uniform methods to be used when determining key performance characteristics of samplers at one or more set sample volume. It is for the sampler manufacturer and/or user to decide on the required set sample volume(s). All of the test procedures are to be carried out under laboratory conditions. It is recognized that for some samplers, certain test procedures are not applicable. Statistical procedures are specified for evaluation of the test data. Some example calculations are provided. Specific sample integrity requirements are specified for samplers to be used for the collection of samples of final effluent or influent for the purpose of monitoring the performance of urban waste water treatment works. Samplers to be used for other industrial applications do not need to be assessed against these specific sample integrity requirements. This document does not cover the installation and on-going use of samplers.