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Soil Moisture Set SMT150T With HH2
Soil Moisture Set SMT150T With HH2

Soil moisture set SM150T with HH2 meter


The Soil moisture set SM150T with HH2 meter is a complete set. The set is affordable and easy-to-use with minimal disturbance to the soil or substrate. The set has a measuring range of 0-70% with an accuracy of +/- 3%.

  • Minimal soil disturbance 
  • Excellent temperature stability
  • Portable, easy and quick to use
  • Scientific accurate: ± 3% 
  • Can be used in saline soils 


The SM150 Soil Moisture Kit provides an affordable and easy-to-use tool for obtaining reliable moisture measurements with minimal soil or substrate disturbance.

The HH2 Moisture Meter is a versatile readout unit for use with Delta-T soil moisture sensors. It can be used with the PR2 Profile Probe (both analogue and SDI-12* versions), ML3 ThetaProbe, SM150T and WET Sensors.

  • Immediate display of water content 
  • Reads ML3, SM150T, PR2 (analogue and SDI-12) or WET Sensor  
  • Stores up to 1500 time-stamped readings 

The HH2 readout unit offers impressive functionality in a compact, hand-held unit, designed for field use. Readings are displayed on the LCD and can be stored to memory for later download to a PC. The unit can be operated with one hand, for convenience in the field. Each time-stamped reading includes a unique sample number, a plot identification number (A to Z), and a sensor location number (1 to 255). 

The “HH2Read” Windows PC software provides a data import wizard for direct download into Excel or other PC spreadsheet packages, or into irrigation scheduling programs. Alternatively, data can be downloaded in comma-separated ASCII data file (.CSV) format. Data is transferred to a PC using the RS-232 cable provided with each unit. Please note that most PCs no longer have an RS232 port; for USB connection a USB to RS232 adapter cable is required (see Accessories). 

Simple operation 
The HH150 hand moisture meter is lightweight and is very easy to use, being a readout-only device (no data recording or PC complications). Operation is simple – just insert the SM150T into the soil or substrate and press the Read button to make a reading. 

Horticulture applications 
The SM150 Kit comes with substrate calibrations for per lite, coir, peat, and mineral wool, as well as soils – providing a rapid, rugged solution for checking the uniformity of growing conditions for many types of growing media. The SM150T is easy to insert and install – its sharp pins minimise soil disturbance and preserve the original soil structure around the measurement rods. 


  • Horticulture research

Set contains

  • SM150T Soil Moisture Sensor 
  • HH2 Moisture Meter 
  • Cable and connector (watertight) 
  • Carry case

*Please note that the HH2 only reads SDI-12 digital data from the PR2 SDI-12 Probe – it is not a general-purpose SDI-12 meter. 


Soil moisture set SM150T with HH2 meter
Input connections (HH2 Meter) 1 water content sensor or 1 WET Sensor
Communication options (HH2 Meter) RS232 / USB [1]
Enclosure rating (HH2 Meter) IP54
Temperature range (HH2 Meter) 0 to + 40°C
Measurement Volumetric water content and soil temperature
Accuracy ± 0.03 m3.m-3 (3%)
With soil-specific calibration ± 0.5°C (0 to 40°C for temp sensor) and ± 0.75°C (-20 to +60°C for temp sensor)
Soil moisture measurement range Full accuracy over: 0 to 0.7 m3.m-3 and full range : 0 to 1.0 m3.m-3
Environmental IP68 (-40 to +70°C)
Sample volume ~55 x 70 mm diameter, sample volume is weighted towards soil immediately surrounding the rods
Sandra van der Linden

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