Levelogger Junior

solinst levelogger junior water level dataloggers

The Levelogger Junior provides an inexpensive alternative for measuring groundwater and surface water levels and temperature.


Solinst recommends using the most recent Levelogger Junior firmware version with Levelogger Software Version 4.4.0. See Section 2.3.


Levelogger Junior Technical Specifications
Level Sensor: Piezoresistive Silicon in 316L Stainless Steel
Ranges: 15, 30 ft. (5, 10 m)
Accuracy: ± 0.1% FS
Normalization: Automatic Temperature Compensation
Temp Comp. Range: 10ºC to 40ºC
Temperature Sensor: Platinum Resistance Temperature Detector (RTD)
Accuracy: ± 0.1ºC
Resolution: 0.1ºC
Battery life: 5 years (based on 1 reading/minute)
Clock Accuracy (typical): ± 1 minute / year
Operating Temperature: -20ºC to 80ºC
Memory: Slate mode
Maximum # Readings: 32,000 (no data compression)
Com Interface: Optical Infra-red: USB, RS-232, SDI-12
Communication Speed: 9600 bps
Size: 22 mm x 140 mm (7/8" x 5.5 ")
Weight: 154 g (5.4 oz)
Wetted Materials: Delrin®, Viton®, 316L Stainless Steel
Sampling Mode: Linear, Future Start, Real Time View
Measurement Rates: 0.5 seconds to 99 hours
Altitude Input: -980 to 16,400 ft. (-300 to 5,000 m)
Barometric Compensation: High accuracy, air-only, Barologger Gold


LT Models Full Scale (FS) Accuracy
F15, M5 16.4 ft., 5 m ± 0.020 ft., 0.6 cm
F30, M10 32.8 ft., 10 m ± 0.032 ft., 1.0 cm



The Levelogger Junior looks very similar to the newer Levelogger Junior Edge. To determine the difference, look at the serial number on the body of the Levelogger. If the fourth number in the serial number is 1, it is a Levelogger Junior. If the fourth number is a 2, it is a Levelogger Junior Edge.

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