SM150T User Manual 1.0 Introduction 4Temperature 33Definitions 39References 41Appendix 1 42Soil-specific Calibration 42Laboratory calibration for non-clay soils 43Laboratory calibration for clay soils 46Appendix 2: 49The SM150 Temperature Sensor 49Global warming and climate studies 49Civil engineering 49Soil contamination and hydrogeology 49Agriculture 49SM150T Temperature Measurement 50Effect of Temperature on Water Permittivity 52Resistance to Temperature Lookup Table 53Technical Support 54Index 56