Solinst Levelogger 5 Junior Water Level Loggers
Features
- Maintenance-free, water-tight design with direct or optical data upload
- Increased memory of up to 75,000 readings of level and temperature
- Compatible with Levelogger Series Software & accessories
- Free ground shipping
- Expedited repair and warranty service
- Lifetime technical support
- More
Overview
The Solinst Levelogger 5 Junior provides an inexpensive alternative for measuring groundwater and surface water levels and temperature. The Levelogger 5 Junior combines a pressure sensor, temperature detector, a datalogger, and 5-year battery (based on a 1-minute sampling rate) in one compact 22mm x 160mm (7/8" x 6.3") stainless steel housing.
Durable
The Levelogger 5 Junior records absolute pressure using the same durable Hastelloy pressure sensor as the Levelogger 5. The Hastelloy sensor performs well in harsh environments and can withstand 2 times overpressure without permanent damage.
Data Storage
The Levelogger 5 Junior features a memory with a capacity of 75,000 sets of temperature and water level data points. Readings are linear at a user-defined interval between 0.5 seconds to 99 hours. Accuracy is 0.1% FS with lifetime factory calibration. Real Time View option allows immediate viewing of live water level and temperature readings, independent of scheduled programming intervals.
Level Sensor: Piezoresistive Silicon with Hastelloy Sensor
Ranges: 5,10 m
Accuracy: ± 0.1% FS
Resolution: 0.02% FS to 0.01% FS
Units of Measure: cm, m, ft, psi, kPa, bar, (ºC, ºF)
Normalization: Automatic Temp Compensation
Temp Comp. Range: 0ºC to 40ºC
Temperature Sensor: Platinum Resistance Temperature Detector
Accuracy: ± 0.1ºC
Resolution: 0.1ºC
Battery Life: 5 Years (based on 1 reading/minute)
Operating Temperature: - 20ºC to 80ºC
Clock Accuracy (typical): ± 1 minute/year (- 20ºC to 80ºC)
Memory Modes: Continuous or Slate
Maximum Readings: 75,000 sets of readings
Communication: Optical high-speed: 57,600 bps with USB
Size: 22 mm x 160 mm (7/8" x 6.3")
Weight: 166 grams (5.6 oz)
Wetted Materials: 316L Stainless Steel, Delrin®, Viton®, Hastelloy
Sampling Mode: Linear, Real Time View, Future Start
Measurement Rates: 0.5 sec to 99 hours
Barometric Compensation: Data Wizard and Barologger 5
In The News
Three Decades of Research at Acton Lake
A multi-disciplinary team at Miami University, Ohio, has been studying the environmental change at Acton Lake for over three decades. Using three different NexSens buoys over this time, the team has an incredible archive of data that is helping build a picture of Acton’s past, present, and future. 
 
Until recently, a NexSens CB-50 buoy was used alongside other environmental monitoring at Acton Lake. In May 2025, the Miami team deployed a new XB-200 buoy , future-proofing their ongoing monitoring using real-time buoy systems. 
 
Acton Lake, a small hypereutrophic reservoir in southwest Ohio, covers 2.4km² and has a maximum depth of about 8m. The dam was built in 1956, and the lake has a large agricultural watershed.
Read MoreSource Water Monitoring in Albany, New York: Tracing Water Quality throughout Tributaries
Thousands of US cities pull their drinking water from natural source waters like reservoirs, rivers, and streams, making overall watershed health a key consideration for water providers. In Albany, New York, the Albany Department of Water and Water Supply delivers drinking water to over 100,000 residents as well as monitors and manages the larger drinking water supply watershed. 
 
Hannah Doherty, Environmental Specialist at the Albany Department of Water and Water Supply , spends her days working with a small team to monitor the drinking supply and the connected water bodies. 
 
Doherty explains, “We’re the first to encounter the water that ends up being the drinking water.
Read MoreWildfire Prevention in the Sierra Nevada Region with the Yuba Watershed Institute
Though recent wildfires have sparked new conversations about wildfire management and response, groups like the Yuba Watershed Institute have been monitoring the forests and water resources of the Sierra Nevada region for decades, managing approximately 5,000 acres of land with the Bureau of Land Management (BLM) and about 7,000 acres in private land partnerships. 
 
The goal of the Institute is to work with local communities and land agencies to improve watershed and forestry management through informed practices and public outreach. The goals of the Yuba Watershed Institute are three-fold: 
 
 	 Improve the ability of fire suppression agencies like the California Department of Forestry and Fire Protection ( CAL FIRE ) and the US Forest Service.
Read More