VanEssen CTD-Diver Differential Pressure Recorders the 1640 actuates the sampler

the 1640 actuates the sampler only while the liquid is touching the probe

and repeatability

34 built-in LEL correction factors

allowing you to reach conduits beyond the range of your vehicle

Quality Is Our Hallmark

VanEssen CTD-Diver Differential Pressure Recorders the 1640 actuates the samplerWhere there is a need to monitor groundwater levels and saltwater intrusion, injected wastewater, or contamination from chemical discharges and landfill sites, the CTD Diver with its 22 mm diameter rugged, corrosion proof ceramic (zirconium oxide) housing, is the instrument of choice. The CTD Diver is a submersible datalogger for long term uninterrupted, real time water level monitoring using a pressure sensor when submerged at a fixed level under the