BASIC SPECIFICATION FOR OPACIMETERS. 2.1 The gas to be measured shall be confined in an enclosure having a non-reflecting internal surface. 2.2 In determining the effective length of the light path through the gas, account shall be taken of the possible influence of devices protecting the light source and the photoelectric cell. This effective length shall be indicated on the instrument. 2.3 The indicating dial of the opacimeter shall have two measuring scales, one in absolute units of light absorption from 0 to β (m -1 ) and the other linear from 0 to 100; both scales shall range from 0 at total light flux to full scale at complete obscuration.
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Samples: Agreement Concerning the Adoption of Uniform Conditions of Approval and Reciprocal Recognition of Approval for Motor Vehicle Equipment and Parts, Agreement Concerning the Adoption of Uniform Conditions of Approval and Reciprocal Recognition of Approval for Motor Vehicle Equipment and Parts, Agreement Concerning the Adoption of Uniform Conditions of Approval and Reciprocal Recognition of Approval for Motor Vehicle Equipment and Parts
BASIC SPECIFICATION FOR OPACIMETERS. 2.1 The gas to be measured shall be confined in an enclosure having a non-reflecting internal surface.
2.2 In determining the effective length of the light path through the gas, account shall be taken of the possible influence of devices protecting the light source and the photoelectric cell. This effective length shall be indicated on the instrument.
2.3 The indicating dial of the opacimeter shall have two measuring scales, one in absolute units of light absorption from 0 to β 4 (m -1 ) and the other linear from 0 to 100; both scales shall range from 0 at total light flux to full scale at complete obscuration.
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