SFS Sap Flow Sensor

Introduction

The SFS Sap Flow Sensor precisely measures plant water use using Heat Ratio Method (HRM). Providing calculated sap velocities, the sensor can also provide raw needle temperature for post-processing. Delivering six key metrics via SDI-12 v1.4, including sap flow rates and velocities, with low power consumption, and a rugged multi-probe design, it’s built for long-term field use in agriculture, forestry, and ecology. Using the proven Heat Ratio Method, the SDI-12 Sap Flow Sensor is designed for integration with irrigation systems, dataloggers, or IoT nodes.

• Plant water use measurement (in litres), for crops and trees
• Available in SDI-12 (v1.4) for use common SDI-12 data loggers. RS485 coming soon..
• Applications include irrigation scheduling, species selection, plant ecophysiological studies, climate change and forest carbon stock estimation
• Exchangeable needles for different crop and plant applications
  • 35 mm – suitable for woody stems
  • 22.5 mm – suitable for both woody and herbaceous stems
  • 12 mm – suitable for herbaceous stems with diameters up to 10 mm
  These probes, along with their corresponding heaters, are equipped with M8 connectors, and they all have outer and inner measurement points. For more information, please check the Needle Lengths Options document.

The SDI-12 Sap Flow sensor brings the proven Heat Ratio Method to an SDI-12 sensor. Including the advanced features from the SFMx to minimise power consumption, the SDI-12 Sap Flow Sensor is compatible with common data loggers that use SDI-12 V1.4.