Global Water WL400 Vented Water Level Sensor

Global Water's WL400 Water Level Sensor provides highly accurate water level measurements with 4-20mA output for a wide variety of applications.

Features

  • Monitor levels in groundwater wells, rivers, streams, tanks, lift stations and open channels
  • Dynamic temperature compensation system for high accuracy and reliability
  • Vented pressure sensor for automatic barometric pressure compensation
List Price $903.00
Starting At $857.85
Stock Check Availability  
Global Water's WL400 Water Level Sensor provides highly accurate water level measurement for a wide variety of applications, including those in severe environments. The submersible pressure transducers have a dynamic temperature compensation system, enabling high accuracy measurements over a wide temperature range. The water level sensor is easily adapted to all dataloggers, telemetry, monitoring equipment, and displays.

Each of the water level sensors consist of a solid state submersible pressure transducer encapsulated in a stainless steel 13/16 inch diameter housing. The water level sensor has a molded waterproof cable and a two-wire 4-20mA output for connection to a monitoring device. A 25 ft cable is standard, and optional cable lengths are available up to 500 ft.

The Water Level Sensor's submersible pressure transducer is fully encapsulated with marine-grade epoxy so that moisture can never leak in or work its way down the vent tube to cause drift or level sensor failure. The sensor uses a unique, highly flexible silicon diaphragm to interface between water and the sensing element. This silicon diaphragm protects the water level sensor's electronics from moisture and provides each sensor with exceptional linearity and very low hysteresis.

Water level ranges of 0-3, 0-15, 0-30, 0-60, 0-120, and 0-250 feet are available. The 0-3 ft low-level range is ideal for measuring shallow flows or small water level changes like those encountered in sewers, storm drains, weirs, and flumes. The 0-3 ft water monitoring sensor accurately measures small changes in water, even when the water's depth is only a few inches deep.
Questions & Answers
Is this sensor difficult to maintain?
No, but standard care and calibration methods are suggested. The screen on the end of the sensor should be periodically checked for clogging from mud, sludge, and other debris. If it is fouled, wash the screen with clean water and/or scrub it gently with a toothbrush. Do not insert objects through the screen, as this may cause damage to the sensor. Global Water recommends verifying the sensor's calibration with a sounder or other measuring device once every 6 months
Did you find what you were looking for?

Select Options

  Products 0 Item Selected
Image
Part #
Description
Price
Stock
Quantity
Global Water WL400 Vented Water Level Sensor
400738-25
WL400 vented water level & temperature sensor with 25 ft. cable, 3 ft. range
Your Price $857.85
Check Availability  
Global Water WL400 Water Level Sensor
400740-25
WL400 vented water level & temperature sensor with 25 ft. cable, 15 ft. range
$840.75
Check Availability  
Global Water WL400 Water Level Sensor
400742-50
WL400 vented water level & temperature sensor with 50 ft. cable, 30 ft. range
$897.75
Check Availability  
Global Water WL400 Water Level Sensor
400744-100
WL400 vented water level & temperature sensor with 100 ft. cable, 60 ft. range
$1,036.45
Check Availability  
Global Water WL400 Water Level Sensor
400746-150
WL400 vented water level & temperature sensor with 150 ft. cable, 120 ft. range
$1,176.10
Check Availability  
Global Water WL400 Water Level Sensor
400748-300
WL400 vented water level & temperature sensor with 300 ft. cable, 250 ft. range
$1,530.45
Check Availability  
  Accessories 0 Item Selected
Notice: At least 1 product is not available to purchase online
×
Multiple Products

have been added to your cart

There are items in your cart.

Cart Subtotal: $xxx.xx

Go to Checkout

In The News

The Birds and the Bees: Understanding the Diversity of Pollinators

Pollinators of all shapes and sizes are vital to ecosystems around the world. From the wide array of food people eat to the diversity of life around the planet, life would be very different without them. Pollinators are organisms that help carry pollen from one plant to another, and over 350,000 species can be found worldwide, according to The California Department of Fish and Wildlife . With the strong relationship between plants and pollinators, losing either would have detrimental impacts on ecosystems.  Over millions of years, both plants and pollinators have evolved alongside each other and formed unique adaptations that allow them to work together, expediting and enhancing the process of pollination.

Read More

Monitoring Volcanic Activity in Hawaii: Safeguarding Public Safety with the Hawaiian Volcano Observatory

The eight main Hawaiian Islands are made up of 15 volcanoes, six of which are active as of 2023 . Many locals live on or near an active volcano, making the monitoring and understanding of volcanic activity a core issue of public safety on the islands. Organizations like the Hawaiian Volcano Observatory (HVO) have spent decades monitoring the islands’ volcanoes to protect the public, develop a deeper understanding of the islands’ volcanos and forecast eruptions whenever possible. Even those who live away from edifices like Mauna Loa often have connections to the people living near the volcano.

Read More

Crystal Clear Problems: Impacts of Water Transparency in Aquatic Ecosystems

From crystal clear alpine lakes to muddy rivers and boggy swamps, water transparency is an easily observable water quality parameter to anyone who takes a few moments to peer into the (sometimes) murky depths. Water transparency varies dramatically based on the location of bodies of water among different watershed environments, but it can also change quickly due to a variety of internal and external factors. At Miami University (OH), the Global Change Limnology Lab explores the many ways that water transparency impacts aquatic ecosystems. Operational for nearly 20 years, the lab trains undergraduate and graduate students and has conducted work from the midwest Great Lakes to Alaska, South America and New Zealand.  The Global Change Limnology Lab, headed by Dr.

Read More