Global Water WL705 Ultrasonic Water Level Sensors
Features
- Great for flumes, weirs, wastewater, open channel flow, and more
- Rugged transducer in a stainless steel sealed housing
- Easy installation with built-in threaded housings
- Free ground shipping
- Expedited repair and warranty service
- Lifetime technical support
- More
Overview
The Global Water WL705 Ultrasonic Water Level Sensor uses the latest ultrasonic distance measuring technology for accurate non-contact water level monitoring. The sensor contains a rugged transducer in a stainless steel sealed housing for long life and provides an industry-standard 4-20mA output. There are three ranges available, including 3, 12, and 48 ft to meet a wide variety of applications, including flumes, weirs, tanks, streams, rivers, and lakes.
Mechanics
Installation is simple and requires no programming or calibration. The sensor comes with a 6 ft cable for interface to PLC's, SCADA systems, and data loggers using the 3-wire 4-20 mA output. The WL705 Ultrasonic Water Level Sensor is also compatible with the Global Water FC220 Open Channel Flow Monitor for water level display and control.
In The News
Cal Poly, San Luis Obispo Manages Monitoring Efforts in Morro Bay
California Polytechnic State University, San Luis Obispo (Cal Poly, SLO), has been monitoring Morro Bay for decades, and while the monitoring program has changed over the years, the dedication to monitoring the bay has remained the same. 
 
The project started in 2006 as a Packard Foundation-funded initiative to monitor water quality flowing in and out of Morro Bay. The goal at the time was to use the data collected to develop and inform an ecosystem-based management plan in collaboration with the Morro Bay National Estuary Program (MBNEP). 
 
Since the estuary was the focus at the time, researchers were monitoring water flowing into the estuary from Chorro Creek and Los Osos Creek.
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 The Fox River flows into the bay, carrying excess nutrients largely the result of non-point source runoff from the watershed. With a history of deterioration extending well into the last century, the bay ecosystem suffered significant declines in water quality. 
 
 This, in turn, stimulated major clean-up and ongoing restoration efforts to improve water quality. Tracking these changes is an important aspect of ecosystem management.
Read MoreCross-Border Sewage Contaminated Flows: Monitoring the Tijuana River
The Tijuana River runs across the US-Mexico boundary, flowing into and throughout southern California, carrying with it nutrients and contaminants throughout the estuary. In recent decades, the flows have been heavily polluted with untreated sewage from the City of Tijuana. 
 
The wastewater enters the greater Tijuana River estuary, impacting coastal communities and disrupting the natural environment. In order to better understand these cross-border flows, researchers out of San Diego University sought to monitor the waterway test the capabilities of in-situ sensors to measure the contaminated water. 
 
Natalie Mladenov and Trent Biggs were two of the researchers involved in the project, deploying a real-time monitoring system in May of 2021.
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