Levelogger LTC Edge Conductivity Data Logger (CTD) (DISCONTINUED - SEE LEVELOGGER 5 LTC)

  • Corrosion Resistant Titanium ceramic PVD coating and Hastelloy pressure sensor provide corrosion resistance
  • User Friendly Operation Levelogger Software, Calibration and Data Wizards guide you through setup, calibration and barometric compensation
  • Optional BioFoul Screen BioFoul Screen provides extra protection for sensors in harsh conditions
  • Cost-effective CTD from Solinst 8 year battery life
Product Options


Please note: the LTC Levelogger Edge has been discontinued and replaced by the Levelogger 5 LTC.

The LTC Levelogger Edge measures conductivity, water level and temperature. It combines a datalogger, pressure sensor, temperature detector and conductivity sensor within a compact Hastelloy, waterproof housing. Measuring 7/8" x 7.5" (22 mm x 190 mm), the LTC Levelogger Edge includes a titanium ceramic PVD coating to protect the sensor from corrosion.

The conductivity sensor is a 4-electrode platinum sensor that is capable of auto-ranging. The LTC Levelogger Edge is practical for field use as the datalogger requires minimal maintenance, is simple to clean and calibrate and has an 8 year battery life. It's memory is non-volatile and can store up to 27,000 readings.

The LTC Levelogger Edge can be installed with direct read cables or cord suspension for easy deployment. It is compatible with the 3001 Levelogger Series including Solinst Telemetry, Bluetooth App Devices and Data Grabber so data can be downloaded in the field.

Manufactured by: Solinst
Model: Levelogger LTC Edge Conductivity Data Logger (CTD) (DISCONTINUED - SEE LEVELOGGER 5 LTC)

Services offered for this product

  • Sales
  • Rental
  • Installation
  • Calibration
  • Maintenance


Salt water intrusion and soil salination monitoring
Plume remediation monitoring and studies
Leachate monitoring at landfills, mine tailings, waste disposal storage sites, and more
Agricultural and stormwater runoff monitoring
Tracer tests


Level Sensor Piezoresistive Silicon with Hastelloy Sensor
Ranges 5, 10, 20, 30, 100, and 200 m
Accuracy ±0.05% FS
Units of Measure cm, m, ft, psi, kPa, bar (ºC, ºF)
Normalization Automatic Temperature Compensation
Temp Compensation Range 0°C to 50°C
Temperature Sensor Platinum Resistance Temperature Detector (RTD)
Accuracy ±0.05°C
Resolution 0.003ºC
Conductivity Sensor 4-Electrode Platinum
Full Range 0 to 100,000 µS/cm
Calibrated Range 50 to 80,000 µS/cm
Accuracy ±1% > 30,000 µS/cm; ±2% 500 - 30,000 µS/cm; ±30µS < 500 µS/cm
Resolution ±0.1 µS/cm
Temp Compensation Range 0°C to 50°C
Normalization Specific Conductance @ 25°C
Battery Life 8 Years (1 reading every 5 minutes)
Clock Accuracy °1 minute/year (-20°C to 80°C)
Operating Temperature -20°C to 80°C
Maximum Readings 27,000 sets of readings in FRAM memory
Memory Slate or Continuous
Communication Optical Infra-red: USB, RS-232, SDI-12
Size 7/8" x 7.5" (22 mm x 190 mm)
Weight 7.05 oz. (200 grams)
Corrosion Resistance Titanium ceramic PVD coating
Wetted Materials Hastelloy, 316L Stainless Steel, Delrin®, Viton®, Titanium ceramic PVD coating
Sampling Mode Linear, Event & User-Selectable with Repeat Mode, Future Start, Future Stop, Real-Time View
Measurement Rates 2 seconds to 99 hours
Barometric Compensation Software Wizard and Barologger Edge




Water level data from remote Leveloggers can be sent using the model 9500 LevelSender, which uses a GSM cellular modem to send the data to a home computer station or mobile device via email/SMS.

The free app is available on both Apple® and Android™ smart devices.
Apple devices must be running iOS 11 or later on the following compatible devices:

  • iPhone
  • iPad
  • iPad mini
  • iPod touch.

Android devices must be running version 5.0 or higher. Solinst does not guarantee compatibility on all devices running 5.0, but testing confirms the following can be used:

  • Phone: Samsung Galaxy S4 - Model SGH-1337M
  • Phone: Samsung Galaxy S5 - Model SM-G900W8
  • Tablet: Samsung Tab 4 (10.1”) - Model SM-T530NU

As the Levelogger App Interface will not connect directly to the top of a Solinst datalogger, it is necessary to have connection accessories. With the Levelogger or Rainlogger, one of the following accessories is required:

  • Direct Read Cable, clients use this option to suspend dataloggers in the field when they wish to communicate downhole.
  • When working with Leveloggers that are suspended from wireline, or cord, the units must be removed from the well and connected to either a Direct Read Cable (as above) or an Optical Adaptor.
  • For the LevelVent, just connect to the unit via the Vented Cable and LevelVent Wellhead that all units are suspended from in the field – no other connection accessories are required.
  • The AquaVent communication connection is made from the App Interface to the AquaVent Wellhead using an App Connector Cable that is ordered separately.
The Levelogger App Interface is portable hardware that connects to the top of your Levelogger via a Direct Read Cable/Adaptor, to a LevelVent Wellhead, or to an AquaVent Wellhead cable. Bluetooth wireless technology allows communication between the Levelogger App Interface and the smart device with the app installed. It allows viewing/downloading of data, and programming of Solinst dataloggers, as well as many other features.
Solinst offers a wide range of dataloggers that can be used with the Leveloggger App Interface. They include the complete, current Levelogger Edge range of units (Edge, Junior Edge, LTC Edge, Rainlogger Edge), previous Gold Leveloggers/Barologgers, and the latest vented datalogger editions, the AquaVent and LevelVent.
  • Program and start dataloggers in the field.
  • Simplify data management in the field by transporting and using less equipment.
  • View real-time readings.
  • Download and e-mail logged data files.
  • Calibrate LTC Leveloggers (NEW).
  • Run the diagnostic utility (NEW) – used for troubleshooting

Leveloggers. Provides detailed information on the datalogger,
and includes options for running a self-test, doing a memory
dump and creating/emailing reports.

You can find an instructional video on how to calibrate the LTC Levelogger edge HERE.
The most recent version of the Android App available is 1.2.5 but that is only available for download if your Android device has Android version 8 (oreo) or above. That means, any device running older Android versions can not download the most recent App-This is a restriction that Google has set.