Global Water WQ201 pH Sensor
Features
- Fully encapsulated electronics
- 4-20 mA output
- Replaceable pH sensor element
- Free ground shipping
- Expedited repair and warranty service
- Lifetime technical support
- More
Overview
The Global Water WQ201 pH sensor is a rugged, reliable water pH measuring device. Sensors are mounted on 25 ft of marine grade cable, with lengths up to 500 ft available upon request. The WQ201 sensor output is 4-20 mA with a three-wire configuration. The pH sensor's electronics are completely encapsulated in marine-grade epoxy within a stainless steel housing. Sensors also use removable shields and replaceable pH sensor elements for easy maintenance.
Options
As with all of Global Water’s 4-20 mA output sensors, you can add recording and control capabilities to the WQ201 with the GL500 Datalogger and the PC320 Controller. The GL500 connects to the pH sensor’s 4-20 mA output to record data, and the PC320 Controller connects to the sensor's output to control pumps or alarms.
| Output | 4-20 mA |
| Range |
0-14 pH |
| Accuracy | 2% of full scale |
| Maximum Pressure |
40 psi |
| Operating Voltage | 10-30 VDC |
|
Current Draw |
5.5 mA plus sensor output |
| Warm Up Time |
3 seconds minimum |
| Operating Temperature | 23 to +131°F (-5 to +55°C) |
| Size of Probe | 1-1/4" Diameter x 10" L (3.2 cm dia. x 25.4 cm long) |
| Weight | 1 lb. (454 g) |
Select Options
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.
Read More
Green Water in Green Bay: Using Data Buoys to Monitor the Southern Bay
While the bay of Green Bay has been referred to as the largest freshwater “estuary” in the world, the watershed hosts intensive agriculture and contributes one-third of Lake Michigan’s total phosphorus load. 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 More
Cross-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.
Read More
