Soil Moisture logger sensor NUL-229

Soil Moisture logger sensor


This logger sensor is based on measuring the partial vacuum pressure in a tensiometer. A tensiometer is a closed tube with a special ceramic part in its end. The tensiometer is filled with water and put in the soil. If the soil is dry, water goes out by diffusion through the ceramic holes and partial vacuum pressure is created in the tensiometer. When we wet the soil, the partial vacuum in the tensiometer pulls water into the tensiometer and the vacuum decreases. This is why soil moisture is measured in pressure level.


Distributors in the United States, Canada, and other countries.
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  • Used in the fields of Environmental Science, Ecology, Animal Behavior, Biology, Chemistry, etc.
  • Utilizes a Blumat soil moisture probe in conjunction with the NeuLog sensor’s hardware and software.
  • Includes a Blumat soil moisture probe attached directly to the NeuLog sensor’s body.
  • The sensor is pre-calibrated at the factory.
  • Experiment duration: 1 second to 31 days.


Sensor Guide and Example labs


Sensor Guide and Example Labs

pdf Soil moisture sensor User Guide
What is included with the sensor, Sensor Specifications, Videos and experiment examples, Technical background, Maintenance and storage, and Warranty.


Soil Moisture B-20
Biology Experiment

Sensor Requirements

Hardware (see all)


USB-200 requirements
WIFI-200 requirements
BAT-200 requirements

Software (see all)

computer requirements

Multiple logger sensors can be used together!

Multi requirements 3

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