Dimensions for panel-mounted indicating and recording electrical measuring instruments
Defines a system of dimensions for electrical and electrically operated indicating measuring instruments of the panel type. The aim of this recommendation is to promote interchangeability of panel-mounted instruments and for this purpose a modular system based on the module of 12.5 mm has been established.
Gives rules defining the checks and tests suitable for verifying the operating characteristics. Applies to pantographs used on rolling stock supplied from a d.c. or single-phase overhead contact system with a nominal voltage of 600 V and above.
Low-voltage fuses Part 4: Supplementary requirements for fuse-links for the protection of semiconduc...
For application in equipment containing semiconductor devices for circuits up to 1000 V a.c. to circuits of nominal voltages up to 1500 V d.c.
Establishes characteristics of semiconductor fuse-links in such a way that they can be replaced by other fuse-links having the same characteristics provided their dimensions are identical. Defines standard conditions for operation in service,…
Information processing - Unpunched paper cards - Specification
Defines the characteristics of general-purpose unpunched paper cards to be used information interchange between different punched card devices. References: ISO/R534; ISO/R 536; ISO/R 1974; ISO/R 2144; ISO 2493; ISO 2494; ISO 2758.
Commercial refrigerated cabinets — Methods of test — Part 3: Temperature test
Describes methods for the determination of test package temperatures in commercial refrigerated cabinets intended for the sale and/or display of food products. A so-called M-package (test package with temperature sensor) is defined. Specifications related to loading the cabinet, running-in, and test period are included.
Information processing — Unpunched paper tape — Specification
Defines characteristics of paper tape to be used for data interchange, when the tape is in the unpunched condition. To be used in conformance with ISO/R 1974 and 2144.
Information processing — Unpunched paper cards — Specification
Defines the characteristics of general-purpose unpunched paper cards to be used information interchange between different punched card devices. References: ISO/R534; ISO/R 536; ISO/R 1974; ISO/R 2144; ISO 2493; ISO 2494; ISO 2758.
Specifies a method for the indentation test under well-defined conditions on a single coating or multicoat system of coating materials or related products. It shall used a specified instrument (Buchholz). The length of the indentation is indicative of the residual deformation of the paint film. The result is expressed as a function of the reciprocal of the indentation length. The test gives…
Sodium fluoride for industrial use — Determination of fluorine content — Modified Willard-Winter met...
The principle consists in separation of the fluorine from a test portion by distillation with sulphuric acid or perchloric acid. Titration with thorium nitrate solution using sodium alizarinsuphonate and methylene blue as indicators. Alternatively the thorium nitrate titration may be carried out using sodium alizarinsuphonate alone as indicator, the end-point being determined…
