ID#: 9471
Caption:
This historical drawing, provided by the Center for Disease Control's (CDC), National Institute for Occupational Safety and Health (NIOSH), detailed a design for a floating scale electrostatic precipitator flow meter. Electrostatic precipitators are used to catch loose airborne particles leftover from incomplete industrial burning processes, like those which take place in coal fired electrical power plants. By electrically charging, or ionizing the particles, the positively-charged particles then move toward negatively-charged collecting electrodes, where they are trapped. The particles adhere to the collection plates and build up into larger particles. The plates are then tapped, or rapped, which loosens the particles that then fall into hoppers, for collection and disposal. The flow meter design is an example of a measure meant to improve workplace safety through the accurate measurement of air quality.
High Resolution: Click here for hi-resolution image (14.05 MB)
Content Provider(s): CDC/ Barbara Jenkins, NIOSH
Creation Date: 1952
Photo Credit: Unknown
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