Description

The Levelogger 6 records highly accurate groundwater and surface water level and temperature measurements. It combines a pressure sensor, a temperature detector, a 10-year lithium battery, and a datalogger that stores up to 150,000 data sets.

Features:

Reliable Connectivity with 2X the Speed: Mk3 USB-C PC Interface Cable doubles communication speeds and provides in-field diagnostics for Direct Read Cables.
Upgraded Electronics: Enhanced stability and accuracy across temperature ranges, with improved capability to capture subtle data trends.
Improved Time Tracking: Stores date/time stamps to support multiple time zone displays, including local time, GMT, and UTC.
Advanced Data Analysis: Built-in functions to identify minimum, maximum, and average values over user-defined intervals, and filters to screen out noisy data.
Streamlined Data Management: Merge multiple files into a single file for easier long-term monitoring.
Data Loss Protection: Dedicated backup storage for latest 20,000 readings ensures data is never lost.
Instant Diagnostics: Get “up front” diagnostic information and real-time readings immediately upon connection.

Selecting The Correct Range:

The choice of pressure range largely depends on the accuracy of the water level required and the desired submergence depth. The selection, however, should be based on the maximum anticipated water level fluctuation. For Example: The Levelogger 6 M5 is designed for 5 meters or 15 feet submergence and provides a typical water level accuracy of ±3 mm (0.01 ft). This instrument is ideally suited for surface water and shallow groundwater applications, where precise water level measurements are essential.

If, however, the anticipated water level fluctuation will be greater than the designed range, then the next available range should be chosen for that application. For example: 10 meters (30 feet) water level fluctuation is expected. To protect from possible over-ranging, the next available pressure range instrument (Levelogger 6 M20) should be selected.

Applications:

Aquifer characterization: pumping tests, slug tests, etc.
Watershed, drainage basin and recharge monitoring
Stream gauging, lake and reservoir management
Harbour and tidal fluctuation measurement
Wetlands and stormwater run-off monitoring
Water supply and tank level measurement
Mine water and landfill leachate management
Long-term water level monitoring in wells, surface water bodies and seawater environments

Specifications:

Level Sensor	Piezoresistive Silicon with Hastelloy Sensor
Accuracy	± 0.05% FS (Barologger 6: ± 0.05 kPa)
Stability of Readings	Superior, low noise
Resolution	0.001% FS to 0.0006% FS
Units of Measure	m, cm, ft., psi, kPa, bar, ºC. ºF (Barologger 6: psi, kPa, mbar, ºC, ºF)
Normalization	Automatic Temperature Compensation
Temp. Comp. Range	0º to 50ºC (Barologger 6: -10 to +50ºC)
Temperature Sensor	Platinum Resistance Temperature Detector (RTD)
Temp. Sensor Accuracy	± 0.05ºC
Temp. Sensor Resolution	0.003°C
Battery Life	10 Years – based on 1 reading/minute
Clock Accuracy (typical)	± 1 minute/year (-20ºC to 80ºC)
Operating Temperature	-20ºC to 80ºC
Maximum Readings	150,000 sets of readings
Dedicated Backup Memory	20,000 sets of the most recent readings
Memory	Slate and Continuous
Communication	Optical high-speed: USB, SDI-12, MODBUS*; 9600 bps, 57600 with USB Desktop/Field Reader, 19.2k with Mk3 USB-C PC Interface Cable
Size	22 mm x 160 mm (7/8″ x 6.3″)
Weight	146 grams (5.2 oz)
Corrosion Resistance	Baked on coating using polymerization technology (inside and out).
Other Wetted Materials	Delrin®, Viton®, 316L stainless steel, Hastelloy, PFAS-free PTFE coating
Sampling Modes	Linear, Event & User-Selectable with Repeat Mode, Future Start, Future Stop, Real-Time View
Measurement Rates	1/8 sec to 99 hrs
Barometric Compensation	Software Wizard and one Barologger 5 in local area (approx. 30 km/20 miles radius)