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> Indoor lighting / General requirements / Lighting measurement / Emergency lighting
For emergency lighting, the following additional measuring conditions apply:
measurement in battery-operated installations at the end of the nominal service life
measurement in installations with power stand-by unit or particularly secured grids at lowest voltage supply
The standard illuminance values for emergency lighting specified in EN 1838 are exclusively direct values, without reflected components. An approximate measurement of illuminance without reflected components can be executed by placing a lens tube in front of the receiver. The relation of lens tube diameter and lens tube length must be selected in a fashion that allows light from every part of the luminaire to reach every part of the receiver. A further possibility is to measure average luminaire luminance with an image-resolution measuring instrument and to determine illuminance on this basis.
Luminance of luminaires Safety signs
Preconditions Measuring grid Measuring plane Illuminance Luminance Reflectance values CRF measurement UGR value Light colour and colour rendering Luminance of luminaires Emergency lighting Safety signs Recording and evaluation Repair and maintenance
Introduction Visual needs Need for orientation Non visual needs
Guidelines Overview Work places Visual task area Surrounding area Illuminance Luminance distribution Limitation of glare Lighting direction, modelling Aspects of colour Flicker and stroboscopic effects Daylight
Maintenance Factor Light and safety at work Light and non-visual effects Light and economy Light and environment Lighting design Lighting measurement Emergency lighting
Lighting of traffic zones and geneal areas in buildings Lighting of industrial activities and crafts Lighting of offices and VDU workstations Lighting of design and CAD offices Lighting of sports facilities Lighting of health care facilities Lighting of geriatric care facilities and nursing homes Lighting of public areas Lighting of salesrooms Lighting of educational facilities Lighting of traffic areas Lighting of car parks Ligthing of further indoor spaces
Luminaires The enhanced concept of quality Photometric classification Photometric properties Photo biology safety Mounting and electrical connection Luminaire labelling Luminaire operation LED luminaire operation Operation of FL luminaires Electrical safety Fire protection Electromagnetic safety Mechanical safety Chemical and miscellaneous impact Acoustic properties Ventilation properties
Firehazardous locations Room with bathtubs and showers Swimming baths Exterior installations Agricultural and gardening plant locations Food industry Clean rooms Requirements on mediacal rooms Emergency light installations
Luminaire selection chart
Light management application and function Presence detection Daylight-dependent regulation Interfaces Building management, KNX and other bus systems
Light sources types Characteristics of light sources
ABC, DF, G, ILM, NO, P, QRSUV, W
Subject index
StandardsGuidelines and instructionsEuropean directives and regulationsFurther publications
Lighting societies
Standardisation institutes
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