Van Essen Instruments Micro-Diver

Pressure transducer with integrated logger

Part # 51144-6

micro-diver

The Micro-Diver provides reliable automatic measurement and registration of groundwater level and temperature data. Measuring a slim 0.7 inches (18 mm) in diameter and 90 mm in length, the Micro-Diver is the smallest groundwater level sensor in its class, and a great choice for monitoring wells that are too small to accommodate larger sensors.

The Micro-Diver is available in four ranges for monitoring the following depths:

  • 0 - 33 ft (0 - 10 m)
  • 0 - 66 ft (0 - 20 m)
  • 0 - 164 ft (0 - 50 m)
  • 0 - 328 ft (0 - 100 m)

In addition to internal data storage, the Micro-Driver can be connected to an external data logger, such as the DataLogIC 3000, or data telemetry systems with the Diver-DCX SDI-12 output adapter, allowing the Diver to be used for real-time data monitoring applications.

Manual data download in the field from a Diver’s internal storage can be done by utilizing the optional USB Interface Cable and connecting the diver directly to a desktop or laptop PC.

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The Answer's in the Cloud.

eTracker is a cellular modem and "virtual" cloud-based data logger in one (meaning you don't need to install a separate data logger). Simply connect your sensor and a power source to eTracker and you're done. Configure (or reconfigure) anytime from any Internet-connected device, and use Stevens-Connect to retrieve your data, or forward it to your favorite software system.

Technical Specifications

Power

Internal Battery, 10-year life with "typical" use

  • 5 million measurements
  • 2,000 readout cycles
  • 2,000 programming cycles

Sample interval

0.5 seconds to 99 hours

Data output options

  • SDI-12 when connected to Diver-DCX converter box
  • Manual data download using USB interface cable connected to computer
  • Manual data download using "Diver Mate" or "Diver USB Reading Unit" accessories

Operating temperature, compensated

32 °F to 122 °F (0 °C to 50 °C)

Temperature accuracy

± 0.18 °F

Temperature resolution

0.018 °F

Wetted parts materials

Housing: Stainless Steel (316L)
O-rings: Viton®
Pressure sensor: ceramic (AI2O3)
Cap / nose cone: Nylon PA6 30% glass fiber

Physical size

3.54 in (L) x Ø 0.71 in (90 mm x Ø18 mm) including suspension eye

Weight

2.46 oz (70 grams)

Depth Range Typical Accuracy Long-Term Stability Resolution
33 ft (10 m) ±0.05% FS ±0.2% FS 0.07 in (0.2 cm)
66 ft (20 m) ±0.05% FS ±0.2% FS 0.15 in (0.4 cm)
164 ft (50 m) ±0.05% FS ±0.2% FS 0.39 in (1 cm)
328 ft (100 m) ±0.05% FS ±0.2% FS 0.78 in (2 cm)