Sensors play a vital role in maintaining the efficiency and quality of water and wastewater treatment processes. These technologies, ever-evolving in precision and efficiency, serve as the industry's vigilant eyes, monitoring real-time quality and process parameters. From detecting sludge levels to maintaining the perfect pH balance, sensors ensure that treatment processes meet stringent standards while maximizing operational efficiency.

Sensorex S8000 Series 
The Sensorex S8000 Series modular pH/ORP sensor platform delivers accurate pH and ORP measurement in water and wastewater treatment. The modular platform is a custom configured system that can grow and change with process needs, saving users time and money. Users first choose the pH or ORP (Redox) electrode suited to their process. Mounting interface choices enable retrofit, submersion and inline installations. Optional electronic modules include unity gain pre-amplifiers for longer installation distances, 4 – 20mA outputs or Modbus for direct interface to plant control systems. If monitoring needs change, users simply update the applicable module without the need to replace the entire system. 714-895-4344; www.sensorex.com

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In-Situ TurbiTech Suspended Solids and Turbidity Sensors
TurbiTech Suspended Solids and Turbidity Sensors from In-Situ use a solid-state infrared light source to deliver stable measurements of mixed liquor suspended solids, total suspended solids and turbidity. Their radial cleaning system eliminates the need for expensive compressors required for air-blast cleaning. Within each six-hour cleaning cycle, scrapers take only 90 seconds to completely remove any ragging or smearing on the optics, leaving the sensor available 99.5% of the time. A large optical surface and sample volume prevent deposits from covering the sensing area, leaving it clear to take representative measurements and ensuring the sensor remains fouling-resistant between cleanings. 800-446-7488; www.in-situ.com

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Keller America Econoline
The redesigned Econoline pressure transmitter from Keller America is built for consistent performance. The Lean Production cell provides maximum versatility for customer-specific applications with short lead times, thus negating the need for the user to maintain extra inventory on-site. It combines a media-isolated piezoresistive silicon sensor with signal conditioning electronics to provide a compact pressure transmitter with < ±1% total error band accuracy over 0-50 degrees C. The industry standard 4-20mA analog output is compatible with most existing monitoring infrastructure and SCADA systems and provides meaningful output in ranges from 30 to 10,000 psi. The design makes it suitable for use under harsh environmental conditions, including those with high levels of electromagnetic radiation, both conducted and radiated. As a result, it provides trouble-free service and sufficient accuracy for almost any application, including those involving aggressive media and/or high levels of electromagnetic interference and where small size, low weight and reasonable cost are required. 877-253-5537; www.kelleramerica.com

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Markland Specialty Engineering Automatic Sludge Blanket Level Detector
The Automatic Sludge Blanket Level Detector from Markland Specialty Engineering uses high-intensity infrared light that, along with its slim profile, enables it to measure the sludge bed depth even in water and wastewater clarifiers and tanks that have obstructed or constricted areas, such as the inclined plates of lamellae. Beam intensity of the LED-phototransistor sensors automatically adjusts for thick or thin biosolids concentration or even light flocs. This detector allows operators to program desludge pumps to run only when necessary for maintaining the preferred liquid-solids interface level, saving wear and tear on pumps. It helps maximize water removal and optimize sludge feed density. In DAF units, it can adjust surface skimmer speeds to match variations in the thickness of the floating sludge layer. In SBRs, it can control the decant valve to minimize cycle times. Calibration is not required. 855-873-7791; www.sludgecontrols.com