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Determining The Minimum Specific Gravity Difference Between Two Liquids
Attempting to read and understand certification markings on a sensor designed for hazardous locations is a bit like learning a new language.
One of the most popular hazardous location protection methods for sensors is intrinsic safety.
Somewhere on the plains of Texas is an APG level sensor on an oil production tank. It reads the levels of both the condensate (oil) and the water that is a natural by-product of the pumping process.
Hazardous locations are classified because of three different types of hazards. We’ve covered quite a bit about hazardous locations in the past month.
We touched on this briefly a few weeks ago when we introduced hazardous locations. You may want to give that post a read as a refresher. Today, we’ll decode the CSA Class 1 certifications.
What is CSA?
We’ve spent some time in the last two weeks discussing hazardous locations and the intrinsic safety protection method.
Taking redundant level measurements is an important precautionary tactic to prevent spills in the event of sensor failure.
Measuring the level of bulk solids in bins, tanks, silos and other types of vessels is difficult. Bulk solids present many challenges including the shape of the material surface, material characteristics, internal vessel structure, dust inside the vessel (especially during filling) and others.
Last week we defined hazardous locations, and discussed the basics of both protection methods and hazardous area classifications. This week, I want to discuss intrinsic safety, what it is, and how it prevents igniting a disaster.
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