Solinst Levelogger 5 Water Level Loggers
Features
- Single-eye optical interface - easier to clean, more scratch-resistant
- Increased memory: 150,000 sets of data
- Double o-ring seals for increased leakage protection
- Free ground shipping
- Expedited repair and warranty service
- Lifetime technical support
- More
Multiparameter Testing
The Solinst Levelogger 5 combines a pressure sensor, temperature detector, 10-year lithium battery, and datalogger, sealed within a 22mm x 160mm (7/8" x 6.3") stainless steel housing with a corrosion-resistant coating baked-on using polymerization technology.
Hastelloy Pressure Sensor
The Levelogger 5 measures absolute pressure using a Hastelloy pressure sensor and offers high resolution and an accuracy of 0.05% FS. Readings are stable in extreme pressure and temperature conditions. The Hastelloy sensor can withstand 2 times over-pressure without permanent damage. Combined with the durable coating inside and out, the Levelogger 5 has high corrosion and abrasion resistance in harsh environments.
Protective Design
The logger uses a Faraday cage design, which protects against power surges or electrical spikes caused by lightning. Its durable maintenance-free design, high accuracy and stability, make the Levelogger 5 the most reliable instrument for long-term, continuous water level recording.
Level Sensor: Piezoresistive Silicon with Hastelloy Sensor
Accuracy: ± 0.05% FS (Barologger 5: ± 0.05 kPa)
Stability of Readings: Superior, low noise
Resolution: 0.002% FS to 0.0006% FS
Units of Measure: m, cm, ft., psi, kPa, bar, ºC. ºF (Barologger 5: psi, kPa, mbar, ºC, ºF)
Normalization: Automatic Temperature Compensation
Temp. Comp. Range: 0º to 50ºC (Barologger 5: -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
Memory Mode: Slate and Continuous
Communication: Optical high-speed: USB, SDI-12 57,600 bps with USB
Size: 22 mm x 160 mm (7/8" x 6.3")
Weight: 166 grams (5.9 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)
In The News
2025 Essential Water Monitoring Gear
Stay ahead of the curve with five of the top water monitoring products for 2025. Technological advancements and manufacturing innovations are leading to better quality data, improved price points, and enhanced user experience. And, while the ‘essentials’ list includes several new products, two tried-and-true measurement instruments continue to take a top spot for portable instrumentation. 
 
 These five products were developed by industry-leading suppliers, and in addition to extensive manufacturer testing, our science team tested and verified each instrument’s performance at the Fondriest Center for Environmental Studies .
Read MoreMonitoring Lake Erie’s Eastern Basin: Building Long-Term Data and Real-Time Public Solutions
In the eastern basin of Lake Erie, off the coast of Dunkirk, New York, a data buoy collects valuable water quality, weather, and wave data that inform residents and regulatory groups of conditions on the water. 
 
Since 2011, Buffalo State University’s Great Lakes Center has maintained and operated the Dunkirk buoy with funding from the Great Lakes Observing System (GLOS) and field support from the NYSDEC Lake Erie Fisheries Research Unit. 
 
[caption id="attachment_38976" align="aligncenter" width="940"] The Dunkirk Buoy viewed from the research vessel after being deployed in early spring.
Read MoreSonTek CastAway-CTD Meter Review
Lightweight and easy to use, the SonTek CastAway offers a convenient 3-in-1 solution for measuring conductivity, temperature, and depth profiles. At a 5 Hz sampling rate, the CastAway is designed for up to 1 m/s free-fall through the water column. 
 
 With fast response and accurate conductivity, temperature, and depth measurements, the CastAway is ideal for thermocline and halocline profiling. The unit also reports salinity and speed of sound. 
 
[caption id="attachment_38732" align="alignnone" width="940"] Environmental scientist, Katelyn Kubasky, holding the SonTek CastAway in front of the pond at the Fondriest Center for Environmental Studies.
Read More