Pivot diameter sensor EMS PDS40 P

Product Group: Sensors
  • manufactured bylogo small
  • sensor for accurate monitoring of stem diameter
  • intended for stem diameter from 5 to 40 mm
  • resolution less than two micrometers
  • non invasive fixing
  • voltage output
  • intended for long-term monitoring
  • low maintenance and easy installation


Output voltage
Measuring range 5 to 40 mm
Resolution 1.24 μm
Protection rating IP67
Weight of sensor 160 g
Operating environment temperature  –40 to 60 °C
Operating environment humidity 0 to 100%

Precise stem diameter records

Diameter P DS data
  • no effect on tree growth
  • efficient tool for field measurement
  • comprises information about growth, water stress and freezing up of the stem
  • low maintenance and energy requirements compared to sophisticated measuring systems such as sap flow for instance
  • together with soil water potential measurement it gives realistic picture of drought stress and the tree response to it


documentdocument 2 Datasheet

Dendrometer Installation

Compatible with

Part of standard set