The Heron NANO-log is a brand new low cost groundwater logger designed to continuously monitoring water levels in groundwater monitoring wells, tanks and open bodies of water. Its small size allows the Heron NANO-log to be used in well diameters as small as 25mm. The newly redesigned NANO also features a marine grade Stainless Steel  housing, which makes it resistant to saline or corrosive water conditions.

The Heron NANO-log is a durable & reliable ground water data logger. It is easy to install, easy to programme and even easier to download data. Used in conjunction with a bar-log barometric logger (optional) the Heron NANO-log does it all for you. There is no need to open separate files and there is no requirement for elevation correction. Used at sea level of on a mountain to, the Heron NANO-log is spot on every time.

Optional Extras

  • Bar-log for barometric compensation.
  • Dipper-log on a reel.
  • Serial RS232 to USB converter.

Features & Benefits

  • Small size allows dipper-log to be used in well diameters down to 25mm.
  • Programmable to take readings from 1 sec to 255 hours.
  • Stores up to 32,000 readings, water depth and temperature.
  • Measures in both meters and feet.
  • Upload onto PC using Windows based software.
  • Programmable time, interval and prestart date.
  • Accurate to 0.05% full scale.
  • Casing size of 22.5mm (0.875 inch) diameter by 100mm (4”) long.
  • Various range available: 10m, 30m, 50m & 120m.
  • Top of casing fitting allows direct read from surface leaving probe insitu.
  • Battery life span of approximately 7 years (at 5 min readings).
  • 1 Year limited warranty.


  • Unattended monitoring of groundwater in environmental monitoring wells.
  • Tank pressure testing, Slug Tests and Pump Tests.

Technical Specifications

Refer to Product Brochure (Download below)