Designed specifically for measuring water level in a stilling well, the Shaft Encoder Series (H-3301/3311/3342) sturdy design incorporates the use a float and pulley to produce accurate data within minutes of installation. Now, with the use of magnetic sensors, the WaterLOG Shaft Encoder features minimize static sensitivity for enhanced performance. You’ll enjoy the easy to read, ultra low power, built-in LDC display allowing you to view the last measured value at any time. And this series is compatible with most data loggers, to allow easy installation. With three models to choose from, you can be sure to get a Shaft Encoder that has all the features you are looking for and more.