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In-Situ Instruments, Loggers and Systems

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In-Situ Environmental Monitoring Instrumentation and Systems

LevelTROLL InstrumentsIn-Situ instruments represent some of the most sophisticated data loggers and water quality measuring devices on the market today. Known for their durability, In-Situ instruments are strong enough to withstand the rigors of marine and brackish environments while providing accurate readings, multiple logging options and a host of other useful features. Designed to meet the needs of today's environmental professionals, In-Situ LevelTROLL are perfect for pumps tests and long-term water quality monitoring.

Water Level Monitoring Instruments
In-Situ water level monitoring instruments deliver accurate, dependable results for an economical price. We carry a variety of water level loggers to suit your needs and budget. Whether you need immediate readings or long-term results, these In-Situ instruments are designed to survive in extreme conditions, providing accurate results for the duration of use. These simple to operate water level loggers will help you save time and money in the field.

Water Level Monitoring Instruments

Water Quality Testing Equipment
Built to exacting standards, In-Situ water quality testing equipment is proven to provide results you can rely on. No matter what your water quality needs are, In-situ has you covered. Find instruments for measuring conductivity, pH, turbity, dissolved oxygen and many other parameters. In fact, In-Situ multiparameter sondes are fully customizable, allowing you to choose the sensors you need. In-Situ water quality testing equipment is built for endurance and accuracy in the field.

Water Quality Testing  Equipment

Rugged Reader
The Rugged Reader is a powerful palm-sized computer designed specifically for interfacing with In-Situ LevelTROLL and other instruments. Housed in a durable plastic construction that truly lives up to its name, the Rugged Reader is waterproof to IP-67 standards and protects against dust and other contaminants.

Rugged Reader

Designed for use in conjunction with LevelTROLL devices, the BaroTROLL and Rugged BaroTROLL provide barometric pressure logging for accurate post-corrected readings. The included Win-Situ® Baro Merge™ software automates the process by correcting LevelTROLL data to compensate for water level changes due to barometric fluctuation.


Environmental Equipment & Supply offers a wide range of In-Situ vented, non-vented and suspension cabling for precision deployment of the entire line of In-Situ products. Available in lengths up to 4000 ft., there's a high-quality In-Situ cable available for your instrument and application of choice.


All In-Situ LevelTROLL instruments feature an ultra-low power system for years of trouble-free use and full connectivity with RS-485 MODBUS, SDI-12, and 4-20mA devices.