Laserfiche WebLink
• <br />• <br />0 <br />Pt. 60, App. A-4, Meth. 9 <br />percent readings are produced without ad- <br />justment. Simulated 0 percent and 100 per- <br />cent opacity values may be produced by al- <br />ternately switching the power to the light <br />source on and off while the smoke generator <br />is not producing smoke. <br />3.3.2 Smoke Meter Evaluation. The smoke <br />meter design and performance are to be eval- <br />uated as follows: <br />3.3.2.1 Light Source. Verify from manufac- <br />turer's data and from voltage measurements <br />40 CFR Ch. 1 (7-1-07 Edition) <br />made at the lamp, as installed, that the lamp <br />is operated within t5 percent of the nominal <br />rated voltage. <br />3.3.2.2 Spectral Response of Photocell. <br />Verify from manufacturer's data that the <br />photocell has a photopic response; i.e., the <br />spectral sensitivity of the cell shall closely <br />approximate the standard spectral-lumi- <br />nosity curve for photopic vision which is ref- <br />erenced in (b) of Table 9-1. <br />314