Van Essen Instruments Micro-Diver Data Logger

The Micro-Diver is our smallest Diver for accurately recording groundwater levels. Measuring only 88 mm (3.46") in length an d18 mm (0.71") in diameter, the Micro-Diver is Van Essen's smallest Diver. The Micro-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 water surface. The pressure sensor measures the equivalent hydrostatic pressure of the water above the sensor diaphragm to calculate the total water depth. The Diver autonomously measures pressure and temperature and records them in its internal memory. The Diver is ideal for ground and surface water level applications. 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 (date/time, pressure, and temperature) - almost one measurement every ten minutes for an entire year. The Micro-Diver has the following sample methods: fixed length intervals, event-dependent, averaging , and pumping tests. It is available in the following pressure ranges: 10 m, 20 m, 50 m, and 100m. Features & Benefits Click here to learn more about the product. Features Compact size: Ø 18 mm – length 88 mm 48,000 records of time stamp, pressure and temperature 30-Point Pressure Factory Calibration Pre-programmed and user defined pumping tests Benefits Fits ¾ inch drive points and piezometers Event based, averaging and pumping tests sample methods to conserve memory Cost effective frequent, long-term measuring Reliable and accurate data No need to search through extraneous data Fits any application Applications Click here to view product specifications. Engineering and construction: Pump tests Aquifer characterization: Pump and slug tests Shallow water monitoring: Drive-points Long-term groundwater monitoring: Small diameters wells Key Specifications Click here to view product specifications. General Length 88 mm Diameter 18 mm Memory 48,000 measurements Housing stainless steel 316L Weight 45 grams Battery life 10 years (dependent on usage) Sample interval 0.5 second to 99 hours Sample methods fixed, event dependent, averaging, and pumping test Pressure Part No DI601 DI602 DI605 DI610 Unit Range 10 20 50 100 meter Accuracy* ±1.0 ±2.0 ±5.0 ±10.0 cmH2O Resolution 0.2 0.4 1.0 2.0 cmH2O Temperature Value Unit Range -20 .. +80 °C Accuracy* ±0.1 °C Resolution 0.01 °C *typical, see product manual for full technical specification