Measuring digester process variables
As a part of the wastewater treatment process, sludge is separated from liquid in settling tanks and is then pumped into a series of digesters. Anaerobic bacteria inside the digester further decompose the sludge, releasing carb...
Measuring wastewater level and bar screen on/off status in a municipal wastewater treatment plant
In a typical wastewater treatment plant, a mechanical bar screen separates insoluble material like trash and rags from the wastewater stream. Motorized scrapers on each bar screen remove accumulated debris from the screen to ma...
Keeping the water flowing in freezing temperatures
In the northern parts of the Northern Hemisphere, freezing temperatures can be a risk to normal water flow every winter. When it gets cold enough, water in belowground pipes will freeze, so it is essential to monitor the so-cal...
Electric motor bearing and winding temperature monitoring
Large wastewater treatment plants often rely on lift stations to move wastewater from the sewer system to the treatment plant.
Monitoring chemical flow and tank level in a wastewater treatment process
One of the first steps in treating municipal wastewater is separating sludge from the wastewater liquid. To speed up this separation process, a chemical flocculant like Aluminum Sulfate is added to the wastewater. A flocculant...
Process measurements in corrosive environments caused by saltwater or salt in air
One of the primary challenges facing field instrumentation in offshore and marine applications is the corrosive nature of the environment in which they are installed.
Heat Exchanger Differentials
Heat exchangers form an integral part of many industrial processes from chemical plants to water treatment facilities. They enable processes to run effectively and offer energy recovery possibilities for use in other areas of a...
Common isolation application in wastewater plants using the 3186B Output loop-powered current isolator
Using a 4-wire level transmitter for monitoring the level in a storage tanks for clarified water is very common in wastewater plants. The challenge here is to connect the active output signal from the level transmitter to an ac...
