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Soil Moisture, Data Logging, Meteorology and Plant Science
 

Soil Moisture Measurement

undefinedundefinedDelta-T Devices is a market leader in soil moisture monitoring, with more than twenty years experience of providing researchers with high quality soil moisture sensors.

Our range incudes the "gold standard” ML3 ThetaProbe soil moisture sensor, highly respected by scientists and researchers worldwide for its reliability and 1% accuracy and featuring built-in temperature measurement.

We also offer the SM300 soil moisture sensor, with 2.5% accuracy, and built-in temperature measurement. Finally we have the affordable SM150 Sensor with 3% accuracy. The sensors are compatible with most types of data logger, including the Delta-T Devices GP2, GP1 and DL6 loggers; alternatively the sensors can be connected to the portable HH2 hand-held readout unit.

For vertical profiling of soil moisture Delta-T offers the unique PR2 Profile Probe. The PR2/4 model measures at 4 depths down to 40cm or the PR2/6 model measures at 6 depths down to 100cm. Researchers and consultants value the flexibility of this instrument which can be used in fixed installations with a data logger or as a portable profiling tool with the HH2 hand-held readout unit. The Delta-T GP2 and DL6 data loggers both have dedicated PR2 connectors for rapid set up. 

The WET Sensor measure three vital properties of substrates: water content, pore water EC and temperature. It is the ideal tool for fertigation monitoring in horticulture or for soil salinity studies. Readout and data storage are handled by the portable HH2 hand-held readout unit; alternatively, the WET Sensor can be connected to a GP1 or GP2 data logger.

For soil water potential measurements Delta-T offers the maintenance-free EQ3 Equitensiometer and the SWT4, SWT4R and SWT5 water filled tensiometers.

Delta-T has retained thousands of loyal customers worldwide who appreciate the reliability, performance and long-term service that we provide. Their feedback is incorporated into many of our product designs to create a process of continuous improvement.

For further information, please use links below to product summary documents or individual product pages

 

Summary - Soil

Grower Product Summary
 

Detailed - Soil & Loggers

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Summary - Entire range

 
Soil Science, Soil Moisture
ML3  ThetaProbe Soil Moisture Sensor
  • Class leading ± 1% soil moisture accuracy

  • Can be buried or used as portable probe 

  • Easy data logger connection (0 - 1V DC)

With its 1% accuracy the ThetaProbe has set the standard for soil moisture measurement for more than 20 years.


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SM300  Soil Moisture Sensor
  • ± 2.5% accuracy 

  • Good temperature and salinity stability

  •  Easy data logger connection (0 - 1V DC) 
The SM300 Soil Moisture Sensor offers convenience and cost saving by combining soil moisture and temperature measurement. It can be used in all soil types, including saline soils. Engineered for reliability and high performance, the SM300 is well suited to both research and agricultural applications.

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SM150  Soil Moisture Sensor
  • ± 3% accuracy

  • Good temperature and salinity stability

  • Easy data logger connection (0 - 1V DC)

The SM150 Soil Moisture Sensor measures volumetric soil moisture content with 3% accuracy. It offers precision and reliability at an extremely affordable price.


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PR2  Profile Probe
  • Soil moisture profiles down to 1m

  • Dual purpose – installed and portable

  • Uses access tubes for easy probe insertion and removal

No other soil moisture probe system enables you to monitor your soil water profiles with such ease and flexibility. Install an access tube into the soil, insert the PR2 Profile Probe and press the HH2 [Read] button to display an instantaneous reading, or connect the PR2 to a data logger (GP2, DL6 or DL2e) and leave the system to record soil moisture changes over time.


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WET-2  WET Sensor
  • Moisture and nutrient status in the root zone

  • Rapid monitoring of growing conditions

  • Calibrations for many soils and substrates

The WET Sensor has crucial applications in precision horticulture and soil science research and is usable in both soils and growing substrates. It is exceptional in its ability to measure pore water conductivity (ECp), the EC of the water that is available to the plant.


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