Esileht»Infoteenus

17 METROLOOGIA JA MÕÕTMINE. FÜÜSIKALISED NÄHTUSED

Tagasi peagrupi juurde

Uued standardid


ISO 11665-4:2020
Hind 127,01 EUR
Measurement of radioactivity in the environment -- Air: radon-222 -- Part 4: Integrated measurement method for determining average activity concentration using passive sampling and delayed analysis
This document describes radon-222 integrated measurement techniques with passive sampling. It gives indications for determining the average activity concentration of the radon-222 in the air from measurements based on easy-to-use and low-cost passive sampling, and the conditions of use for the sensors. This document covers samples taken without interruption over periods varying from a few days to one year. This measurement method is applicable to air samples with radon activity concentrations greater than 5 Bq/m3.
Asendab ISO 11665-4:2012

IEC 61322:2020
Hind 257,71 EUR
Radiation protection instrumentation - Installed ambient dose equivalent rate meters, warning and monitoring assemblies for neutrons with energies from thermal to 20 MeV
IEC 61322:2020 applies to installed dose equivalent rate meters, warning assemblies and monitors, as defined below. It covers equipment intended to measure neutron radiation in dose equivalent rates in the energy region between thermal and 20 MeV for the purposes of radiation protection. Assemblies of this type are commonly defined as area radiation monitors. They are normally employed to determine continuously the radiological situation in working areas in which the radiation field may change with time, for example, nuclear power plants, particle accelerators, high-activity laboratories, fuel reprocessing plants, etc., and provide alarms when the radiation field goes outside predetermined limits. The assemblies considered in this document comprise at least: - a detector assembly, which may, for example, consist of a detector probe (for thermal neutrons such as BF3 proportional counter, 3He proportional counter, 6LiI(Tl) scintillation detector, etc.) and a moderating and absorbing medium surrounding the detector; - a processing assembly, which may be fitted into a centralized panel, which, in the case of warning assemblies and monitors, provides signal outputs and contacts capable of activating alarm or other trip circuits; - alternatively, the case when all the processing electronics are placed within the detection unit (so called "smart blocks") may be considered. In this case the functions of the processing assembly will be composed of only the indication, the providing signal outputs and contacts. This second edition cancels and replaces the first edition published in 1994 This edition includes the following significant technical changes with respect to the previous edition: - this document has been updated to take account of the requirements of the relevant IEC standards, IEC 60532:2010 and IEC 61005:2014.
Asendab IEC 61322:1994

IEC 63145-22-10:2020
Hind 161,07 EUR
Eyewear display - Part 22-10: Specific measurement methods for AR type - Optical properties
IEC 63145-22-20:2020(E) specifies the standard measurement conditions and measuring methods for determining the see-through optical properties and imaging quality of augmented reality (AR) eyewear displays. This includes the transmission characteristics and ambient optical performance of the eyewear displays. Contact lens type displays are out of the scope of this document. NOTE The relationship between the scope and other documents (IEC 63145-20-10, IEC 63145-22-10) is shown in Annex A.

Asendatud või tühistatud standardid


Puuduvad

Kavandite arvamusküsitlus


prEN IEC 60584-3:2020
Identne IEC 60584-3:201X; prEN IEC 60584-3:2020
Tähtaeg 15.03.2020
Thermocouples - Part 3: Extension and compensating cables - Tolerances and identification system
This part of IEC 60584 specifies manufacturing tolerances for extension and compensating cables (other than mineral insulated cables) provided directly to users of industrial processes. These tolerances are determined with respect to the electro-motive force (abbreviated as e.m.f. hereafter) - temperature relationship of Part 1 of the standard. The method for identification of insulated thermocouple extension and compensating cables other than mineral insulated cables is described. Furthermore, requirements for extension and compensating cables for use in industrial process control are specified.
Keel: Inglise

EN 50566:2017/prA1
Tähtaeg 15.03.2020
Product standard to demonstrate the compliance of wireless communication devices with the basic restrictions and exposure limit values related to human exposure to electromagnetic fields in the frequency range from 30 MHz to 6 GHz: hand-held and body mounted devices in close proximity to the human body
This product standard applies to wireless communication devices used at distances up to and including 200 mm from the human body, i.e. when held in the hand or in front of the face, mounted on the body, combined with other transmitting or non-transmitting devices or accessories (e.g. belt-clip, camera or Bluetooth add-on), or integrated into garments. The applicable frequency range is from 30 MHz to 6 GHz. The objective of this standard is to demonstrate the compliance of such devices with the basic restrictions and exposure limit values related to human exposure to radio frequency electromagnetic fields. For devices used next to the ear the applicable product standard is EN 50360:2017 [1]. For low power devices the applicable product standard is EN 50663:2017 [2].
Keel: Inglise