BS EN 15758:2010 pdf free.Conservation of Cultural Property—Procedures and instruments for measuring temperatures of the air and the surfaces of objects.
BS EN 15758 This European Standard recommends the procedures for measuring the temperature of the air and of the surfaces of cultural property in indoor and outdoor environments, as well as specifying the minimum characteristics of instruments for such measurements.
This document contains recommendations for accurate measurements to ensure the safety of objects and it is addressed to any people with the responsibility of the environment, its diagnosis, the conservation or maintenance of buildings, collections, or single object.
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN ISO 7726:2001, Ergonomics of the thermal environment一Instruments for measuring physical quantities (ISO 7726:1998)
Terms and definitions For the purposes of this document, the fllowing terms and definitions apply.
air temperature temperature read on a thermometer which is exposed to air in a position sheltered from direct solar radiation or other energy sources
NOTE This is expressed in degrees Celsius (°C).
black-globe thermometer thermometer consisting of a black globe in the centre of which is placed a temperature sensor, and which records the effective air-radiant temperature which results from a thermal balance between air temperature, radiation coming from the different heat sources and convective motions.
blackbody strip target low thermal inertia, blackbody target, like a strip of black textile, which assumes an effective air-radiant temperature resulting from a thermal balance between air temperature, radiation coming from light, heat sources and convective motions.
emissivity relative power of a surface to emit heat by radiation expressed as the ratio of the radiant energy emitted by a surface to that emitted by a blackbody at the same temperature.
infrared thermometer thermometer which permits remote measurements of surface temperature by measuring the flux of infrared radiation emitted and reflected from the target.
measuring range interval of values that are intended to be measured, or that are potentially measurable, or that have been measured, specified by their upper and lower limits.BS EN 15758 pdf download.