Diver® water level loggers by Schlumberger Water Services are small, smart and easy to use groundwater monitoring instruments. Tens of thousands of these units are in place, worldwide. Each is accurately, reliably and conveniently recording water level, temperature, conductivity, 24 hours a day, seven days a week. This smart monitoring technology complements the e-Sense range of remote sensing data-loggers, instruments and modems for the automatic measurement and registration of groundwater information.
Diver® water level loggers can be read and programmed onsite or linked to a telemetry system for complete offsite management. They are available in various designs, suitable for all environments and come with a 3 year warranty and built in battery life of 10 years.
The original Diver, updated and improved, and still acknowledged as the market leader for measuring and recording of groundwater level and temperature. Easy to operate software makes programing, either in the field or in the office, a matter of seconds.
Available in four measuring ranges, the Mini-Diver has an internal memory of 24,000 measurements and a long battery life. For each measurement the Diver registers the date and time, groundwater level and temperature, the measuring frequency can be fixed from 0.5 seconds up to 99 hours.
Just 22 x 90 mm in size the Mini-Diver fits most wells and can be simply suspended from a cable so no part of the equipment is visible, reducing the risk of vandalism. The logger operates in a temperature range of -20°C to +80°C.
The Micro-Diver is the smallest and at just 18mm in diameter it fits wells too small to accommodate larger data loggers. It is available in four measuring ranges to monitor groundwater levels and temperature. It has various measurement methods including fixed, event dependent and averaging, plus an inbuilt defined multiple pumping test schemes and also the ability for you to set up your own at a variable frequency of 0.5 seconds to 99 hours. The internal memory capacity is 48,000 measurements.
Like its larger counterpart the Micro-Diver is hermetically sealed in a stainless steel housing so is less sensitive to moisture and external electrical influences.
The same size as the Mini-Diver the Cera-Diver has been designed for groundwater monitoring under potentially corrosive conditions where a robust, durable data-logger is required. Constructed entirely in ceramic it is corrosion resistant and has a typical accuracy of +/- 0.05% and a memory for 48,000 measurements. Like the Micro-Diver there is a defined multiple pumping test scheme and the ability to set up your own at a variable frequency of 0.5 seconds to 99 hours.
The CTD-Diver monitors conductivity, temperature and water levels In corrosive waters so you are able to establish saltwater intrusion, injected wastewater and contaminated waste from chemical or landfill sites for example. It is ideal to take multiple measurements to track contamination plume in groundwater. In addition to the pressure and temperature sensor this model has a conductivity sensor for a range of 0-120mS/cm. There are two options for measuring conductivity: measured or specific conductivity at 25°C.
The Baro-Diver accurately captures changes in atmospheric pressure and just one will cover a radius of up to 15km, depending on the topography. So for each measurement the Baro-Diver simultaneously registers barometric pressure, air temperature, date and time with up to 24,000 measurements.
A Baro-Diver is critical when you need the absolute groundwater pressure as its readings are subtracted from the Diver measurements to give you the exact and compensated values.
e+WATER L Surface Water Level Loggers are for the measurement and logging of water level/depth and temperature and the depth of rivers, canals, lakes. The loggers are able to cope with a water fluctuation from 0m to 200cm and are capable of storing up to 28,000 measurements. These vented surface water level loggers have built in barometric compensation so are more accurate than standard down well unvented water level loggers. They are also frost resistant if exposed to the elements.
They form part of our telemetry systems for remote programming and data interrogation.