Despacho n.º 9143/2008, de 28 de Março de 2008
Despacho n.º 9143/2008 Despacho de aprovação de modelo n.º 245.70.08.3.03 No uso da competência conferida pela alínea
b), do n.º 1, do artigo 8.º, do Decreto -Lei 291/90, de 20 de Setembro e nos termos do n.º 5.1 da Portaria 962/90, de 9 de Outubro e da Portaria n.º 1069/89 de 13 de Dezembro, aprovo o sonómetro da marca Brüel & Kjaer, modelo 2250 Light, fabricado por Brüel & Kjaer Sound & Vibration measurement A/S fabrica em Naerum, Dinamarca, e requerido pela firma.
Brüel & Kjaer Ibérica, Sucursal em Portugal com sede em Edifício Monsanto, Rua Alto do Montijo, n.º13, 2.º Esq., Portela de Carnaxide, 2790 -177 Carnaxide, Portugal. 1 -- Descrição sumária. -- O 2250 Light é um sonómetro integrador de classe de exactidão I, de acordo com o estabelecido na Recomendação Internacional n.º 58 da Organização Internacional da metrologia Legal e na norma IEC 61672.2 -- Constituição. 2.1 -- Sonómetro: Marca: Brüel & Kjaer; Modelo: 2250 Light; Microfone: Brüel & Kjaer modelo 4950 pré -polarizado de campo livre e ½ "de diâmetro; Pré -amplificador Brüel & Kjaer modelo ZC0032 2.2 -- Calibrador: Marca: Brüel & Kjaer; Modelo: 4231. 3 -- Características metrológicas. 3.1 -- Sonómetro: Classe de exactidão: I; Resolução: 0,1 dB; Nível acústico de referência: 94 dB; Frequência de referência: 1 kHz; Ponderação em frequência: A, C e Linear; Ponderação no tempo exponenciais: Rápida, Lenta, Pico, Impulso; Nível máximo de Pico: 140dB; Gamas de medição: 20dB (A, C) a 140dB (A, C); 26dB (Linear) a 140dB (Linear); Condições ambientais para funcionamento: ( -10 a +50).ºC (30 a 90) % HR 3.2 -- Calibrador: Classe de exactidão: I...
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