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What is Wastewater, and How is it Treated?

Every day, billions of gallons of wastewater are collected from our homes, businesses, and industries. Wastewater is exactly what it sounds like: water that has already been used and disposed of via a tub, toilet, sink, or storm drains. Because it is full of contaminants that make the water no longer suitable for use, it is collected in the sewer system and delivered to plants for treatment to make the water safe to be returned to the environment. Continue reading “What is Wastewater, and How is it Treated?”

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What is Radon, and Why are We Testing for it in Our Homes?

For anyone who has recently purchased or sold a home, they may have noticed a radon inspection clause in the purchasing agreement. What is radon, and why are we testing for it in our homes?

Radon is an odorless, colorless gas that is naturally released into the environment as a decay byproduct of radium. Radium is a decay byproduct of uranium which can be found in certain types of rock, soil, or water. Some areas have higher concentrations of radon due to the soil composition which leads to additional testing for radon. Continue reading “What is Radon, and Why are We Testing for it in Our Homes?”

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What is Deadband? Switch Actuation and Deactuation

Electrical Switch Products

Dwyer Instruments offers many electrical switch products that make or break a contact based on sensing a parameter such as pressure, temperature, level, and so on.

Most switches are single pole double throw, often referred to as SPDT. This type of switch has one normally open contact and one normally closed contact.  Switches can also be double pole double throw, or DPDT, that have two normally open and two normally closed contacts.  Single pole single throw switches with just one contact are also available and are specified to be either normally open or normally closed.

Continue reading “What is Deadband? Switch Actuation and Deactuation”