Van Essen Micro-Diver Water Level Loggers
The Van Essen Micro-Diver is designed to measure water pressure and temperature autonomously after being programmed to suit user needs.
Features
- Compact size: 18mm diameter x 88mm length
- Stores 48,000 records of time, pressure and temperature
- Pre-programmed and user defined pumping tests
- Free ground shipping
- Expedited repair and warranty service
- Lifetime technical support
- More
Overview
The Van Essen Micro-Diver is the smallest Diver capable of accurately recording groundwater levels and temperature. The Micro-Diver is specifically designed for monitoring wells or drive-points too small to accommodate larger dataloggers. In addition to its compact size, the Micro-Diver’s memory capacity can store up to 48,000 measurements per parameter - almost one measurement every ten minutes for an entire year.
Compact Pressure Sensor
The Van Essen Micro-Diver is the smallest Diver with a diameter of 18 mm and a stainless steel (316 L) casing. The Micro-Diver is suitable for pipes with a diameter of at least 20 mm (0.787 in). The Diver consists of a pressure sensor, a temperature sensor and memory for storing measurements and a battery. The Diver is an autonomous datalogger that can be programmed by the user. The Diver has a completely sealed enclosure. The communication between Divers and Laptops/field devices is based on optical communication.
In The News
Van Essen Diver Loggers Join Fondriest Product Lineup
New to Fondriest Environmental’s product portfolio are the Van Essen Instruments Diver loggers, which are ideal for monitoring groundwater and surface water in a variety of applications. See below for a short description of each new addition. 
 
 Van Essen CTD-Diver Water Level & Conductivity Logger 
 
If you need to monitor groundwater levels and saltwater intrusion, injected wastewater, or contamination from chemical discharges and landfill sites, the CTD-Diver is a good choice. It features a rugged, corrosion-proof ceramic housing and is equipped with a four-electrode conductivity sensor to measure electrical conductivity from 0 to 120 mS/cm. There are two options for measuring conductivity: true or specific conductivity at 25 degrees Celsius.
Read MoreClimate Change and Microplastics: Monitoring Lake Champlain
Most people go to Lake Champlain for its exceptional views and thrilling boating, but it’s also home to a wide variety of interesting aquatic research projects. From studying microplastics to thermal dynamics of the lake, Timothy Mihuc, director of the Lake Champlain Research Institute (LCRI) at the State University of New York at Plattsburgh (SUNY Plattsburgh), has spent his career studying aquatic ecosystems. 
 
 As an aquatic biologist, he’s the main investigator on Lake Champlain’s research studies while also managing their grants, employees, and their hands-on buoy work. 
 
 Over the years, LCRI has received a number of environmental grants that aid in its monitoring research.
Read MoreCurrent Monitoring after the Francis Scott Key Bridge Collapse
On March 26th, according to The Baltimore Sun , a 984-foot, 112,000-ton Dali lost propulsion and collided with a support column of the Francis Scott Key Bridge, collapsing the structure. Soon after the event, search and rescue, salvage crews, and other emergency responders were mobilized after the collision. 
 
As salvage efforts progressed in early April, NOAA’s Center for Operational Oceanographic Products and Services (CO-OPS) responded to a request for real-time tidal currents data and deployed a current monitoring buoy—CURBY (Currents Real-time BuoY)—into the Patapsco River north of the Francis Scott Key Bridge.
Read More