# Heron dipperLog 128+ Absolute Groundwater Data Logger

> Heron dipperLog 128+ absolute groundwater data logger: water level and temperature, 128,000 readings, up to 15-year battery, IP68. Quote from ERE Canada.

- **URL:** https://www.ereinc.com/products/heron-dipperlog-128-absolute-groundwater-data-logger
- **Type:** Water Level Datalogger
- **Brand:** Heron Instruments
- **Pricing:** request a quote at https://www.ereinc.com/products/heron-dipperlog-128-absolute-groundwater-data-logger
- **Tags:** brand:heron-instruments, cat:water-monitoring, dept:instruments-sales, ere-equip, Heron Instruments, heron-instruments-wave-2026-10, Type: Water Level Datalogger, Water Level

## Description

The Heron dipperLog 128+ is an absolute pressure data logger that records groundwater level and temperature in wells and open water, for long-term monitoring, pump tests and slug tests. It stores 128,000 readings, runs up to 15 years on its lithium battery and is built in 316 stainless steel.
- Records water level and temperature: 128,000 readings, downloaded in about 6 minutes
- Water level accuracy ± 0.05 % FS typical (0 to 50 °C), resolution 0.01 % FS
- Temperature ± 0.05 °C typical; sensor meets ASTM E1112 and ISO 80601-2-56, NIST traceable
- Lithium battery: up to 5 million readings or up to 15 years, depending on use
- 316 stainless steel body, PFAS-free wetted materials, IP68
- Overpressure rated to 2 times the factory calibrated range
- Deploys suspended on a cord, on a direct read cable or on a reel
- Measures absolute pressure: compensate with a Heron barLog barometric logger (one per site within 5 km)

## Images
- https://cdn.shopify.com/s/files/1/0561/7434/6433/files/d-128.jpg?v=1792765418