The SMM Soil Moisture Meter is a stand-alone logging instrument for the measurement of volumetric moisture content and soil water potential of soils and other materials.
The SMM can support up to 10 capacitance sensors. With a soil water characteristic curve, the SMM can be programmed to simultaneously measure soil water content and soil water potential. Or, up to 10 channels can measure soil water potential. The SMM is a fully self-contained unit requiring power input from a 22W solar panel (field applications) or 24V power supply (laboratory applications). Communication is via a USB port or wireless connectivity. The SMM is IP-65 rated and has a Windows and Mac compatible GUI for complete logging solutions including look-up tables, scripts and sensor calibration capabilities.
|Analogue Channels||10 single ended|
|Minimum Logging Interval||1 second|
|Delayed Start||Suspend Logging, Customised Intervals|
|Communications||USB, Wireless Radio Frequency 2.4 GHz|
|Data Storage||MicroSD Card, SDHC & SDXC Compatible (FAT32 format)|
|Software Compatibility||Windows 8, 8.1 & 10. Mac OS X.|
|Data Compatibility||FAT32 compatible for direct exchange of SD card with any Windows PC|
|Data File Format||Comma Separated Values (CSV) for compatibility with all software programs|
|Memory Capacity||Up to 16GB, 4GB microSD card included.|
|Temperature Range||-40°C to +80°C|
|Upgradable||User Upgradeable firmware using USB boot strap loader function|
|Internal Battery Specifications|
|960mAh Lithium Polymer, 4.20 Volts fully charged|
|External Power Requirements|
|Bus Power||8-30 Volts DC, non-polarised, current draw is 190mA maximum at 17 volts per logger|
|USB Power||5 Volts DC|
|Internal Charge Rate|
|Bus Power||60mA – 200mA Variable internal charge rate, maximum charge rate of 200mA active when the external voltage rises above 16 Volts DC|
|USB Power||100mA fixed charge rate|
|Internal Power Management|
|Fully Charged Battery||4.20 Volts|
|Low Power Mode||3.60 Volts – Instrument ceases to take measurements|
|Discharged Battery||2.90 Volts – Instrument automatically switches off at and below this voltage when no external power connected.|
|Battery Life varies|
Barton, L., Murphy, D.V., and C. Butterbach-Bahl (2013) Influence of crop rotation and liming on greenhouse gas emissions from a semi-arid soil. Agriculture, Ecosystems & Environment, 167: 23-32.
Buckley, T. N., T. L. Turnbull, S. Pfautsch and M. A. Adams (2011) Nocturnal water loss in mature subalpine Eucalyptus delegatensis tall open forests and adjacent E. pauciflora woodlands. Ecology and Evolution, Open Access
Buckley, T. N., T. L. Turnbull, S. Pfautsch, M. Gharun and M. A. Adams (2012) Differences in water use between mature and post-fire regrowth stands of subalpine Eucalyptus delegatensis R. Baker. Forest Ecology and Management, 270: 1-10.
Chen, W., Liu, W., and B Liu (2006) Numerical and experimental analysis of heat and moisture content transfer in a lean-to greenhouse. Energy and Buildings, 38: 99-104.
Cheng, C.Y., Cheung, K.S., and L.M. Chu (2010) Thermal performance of a vegetated cladding system on facade walls. Building and Environment, 45: 1779-1787.
Drake, P. L., Coleman, B.F., and R. Vogwill (2012) The response of semi-arid ephemeral wetland plants to flooding: linking water use to hydrological processes. Ecohydrology, 6: 852-862.
Gharun, M., T. L. Turnbull and M. A. Adams (2013) Stand water use status in relation to fire in a mixed species eucalypt forest. Forest Ecology and Management, 304: 162-170.
Guyot, A., K. T. Ostergaard, M. Lenkopane, J. Fan and D. A. Lockington (2013) Using electrical resistivity tomography to differentiate sapwood from heartwood: application to conifers. Tree Physiology, 33: 187-194.
Harris, S.J., Orense, R.P., and K. Itoh (2012) Back analyses of rainfall-induced slope failure in Northland Allochthon formation. Landslides, 9: 349-356.
Hautala, M. and M. Hakojärvi (2011) An analytical C3-crop growth model for precision farming. Precision Agriculture, 12: 266-279.
Jiang, H., Deng, Q., Zhou, G., Hui, D., Zhang, D., Liu, S., Chu, G., and Li, J. (2013) Responses of soil respiration and its temperature/moisture sensitivity to precipitation in three subtropical forests in southern China. Biogeosciences, 10, 3963-3982.
Khadijah, S., Kahn, L.P., Walkden-Brown, S.W., Bailey, J.N. and S.F. Bowers (2013) Soil moisture modulates the effects of the timing and amount of rainfall on faecal moisture and development of Haemonchus contortus and Trichostrongylus colubriformis to infective third stage larvae. Veterinary Parasitology, 196: 347-357.
Livesley, S. J., R. Kiese, P. Miehle, C. J. Weston, K. Butterbach-Bahl and S. K. Arndt (2009) Soil–atmosphere exchange of greenhouse gases in a Eucalyptus marginata woodland, a clover-grass pasture, and Pinus radiata and Eucalyptus globulus plantations. Global Change Biology, 15: 425-440.
Pastur, G. J. M., J. M. Cellini, M. V. Lencinas, M. Barrera and P. L. Peri (2011) Environmental variables influencing regeneration of Nothofagus pumilio in a system with combined aggregated and dispersed retention. Forest Ecology and Management, 261: 178-186.
Pastur, G.J.M., Jordan, C., Soler, R. Lencinas, M.V., Ivancich, H., and G. Kreps (2012) Landscape and microenvironmental conditions influence over regeneration dynamics in old-growth Nothofagus betuloides Southern Patagonian forests. Plant Biosystems, 146:
Pastur, G.J.M, Soler, R., Cellini, J.M., Lencinas, M.V., Peri, P.L. and M.G. Neyland (2013) Survival and growth of Nothofagus pumilio seedlings under several microenvironments after variable retention harvesting in southern Patagonian forests. Annals of Forest Science.
Soler, R., G. M. Pastur, P. Peri, M. V. Lencinas and F. Pulido (2013) Are silvopastoral systems compatible with forest regeneration? An integrative approach in southern Patagonia. Agroforestry Systems, 87: 1213-1227.
Tang, X., S. Liu, G. Zhou, D. Zhang and C. Zhou (2006) Soil-atmospheric exchange of CO2, CH4, and N2O in three subtropical forest ecosystems in southern China. Global Change Biology, 12: 546-560.
Tang, Z., Zhou, G., Liu, S., Zhang, D., Liu, S., Li, J. and C. Zhou (2006) ependence of Soil Respiration on Soil Temperature and Soil Moisture in Successional Forests in Southern China. Journal of Integrative Plant Biology, 48: 654-663.
Warren, C.R., and Taranto, M.T. (2010) Temporal variation in pools of amino acids, inorganic and microbial N in a temperate grassland soil. Soil Biology and Biochemistry, 42: 353-359.
Warren, C.R., and Taranto, M.T. (2011) Ecosystem Respiration in a Seasonally Snow-Covered Subalpine Grassland. Arctic, Antarctic and Alpine Research, 43: 137-143.