E24R-155 SDI-12 Digital Rotary Encoder Level Sensor

Accurate, low-power level measurement.

The E24R-155 series Rotary Encoder has been developed for applications that use traditional encoders but with additional functionality for data loggers and telemetry systems that require connected sensors to connect with digital signals. The E24R-155, in particular, has embedded electronics and a microprocessor, enabling communications via the SDI-12 protocol.

E24R-155 Rotary Encoder Product Parameters

  • Output Signal: SDI-12 protocol, Version 1.4
  • Accuracy: 0.01% of FS (Example: 1mm accuracy over 10m range)
  • Electrical Connections: Cable Outlet with 2m screened PVC cable (alternative lengths available)
  • Special Features: High accuracy, low power consumption, internal battery backup, wide operating temperature range.

E24R-155 SDI-12 Digital Rotary Encoder Product Overview

The E24R-155 series Rotary Encoder has been developed for applications that use traditional encoders but with additional functionality to be used with data loggers and telemetry systems that require connected sensors to connect with digital signals.

The E24R-155, in particular, has embedded electronics and a microprocessor, enabling communications via the SDI-12 protocol.

In addition to the digital communications, the E24R-155 has an internal battery backup in case of power shortages on site. The encoder will remember its position without needing to reset the encoder’s position.

Product Features: E24R-155 Rotary Encoder

  • High accuracy and repeatable
  • Rotation speeds up to 10,000 rpm
  • Suitable for industrial & environmental applications
  • Low power consumption
  • Internal battery backup
  • Wide operating temperature range
  • Lightweight Anodised Aluminium body
  • 8mm steel shaft to fit many types of pulley

Applications include, but not limited to:

The E24R-155 Rotary Encoder is highly valued in tidal monitoring systems due to its precision and reliability in measuring water level changes. In these systems, the encoder is typically connected to a float or pulley mechanism that rises and falls with the tide. As the water level shifts, the encoder translates this movement into accurate digital signals, allowing for real-time tracking of tidal fluctuations. This data is crucial for coastal management, flood prediction, and navigation safety.

In the field of environmental monitoring: reservoir, river, canal and stream level, the E24R-155 plays a vital role in tracking water levels across various natural and man-made bodies of water. By providing continuous and precise measurements, the encoder helps authorities and researchers monitor changes in water volume, detect potential flooding events, and manage water resources more effectively. Its robust design ensures reliable operation even in harsh outdoor environments, making it ideal for long-term deployment in remote locations.

The encoder is also widely used in academic research, where accurate and repeatable measurements are essential for scientific studies. Researchers utilize the E24R-155 in experiments that require monitoring of water levels, flow rates, or other environmental parameters. Its compatibility with data logging systems and ease of integration into custom setups make it a preferred choice for universities and research institutions conducting hydrological or environmental studies.

For OEM installations, the E24R-155 offers flexibility and reliability for integration into custom equipment and monitoring solutions. Original Equipment Manufacturers (OEMs) can incorporate the encoder into their own products, such as automated water management systems or industrial monitoring devices. Its standardized output and robust construction ensure seamless operation within a wide range of OEM applications, supporting both commercial and industrial needs.

To download the latest datasheet click here: E24R-155 SDI-12 Rotary Encoder
To download the latest Manual click here: E24R Encoder Manual

Why Use an SDI-12 Digital Rotary Encoder Level Sensor for Remote Water Level Monitoring

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