A Novel Portable Soil Water Sensor Based on Temperature Compensation

Table 3

Comparison of measurement results.

Soil samples	Sensor type	Soil volumetric water content (%)
Sandy soil	TDR	7.26	10.74	14.89	17.12	20.89	26.40	30.11
	TCSWR	7.86	11.11	14.10	16.74	20.53	25.57	30.33
	Absolute errors	0.60	0.37	0.79	0.38	0.36	0.83	0.22
Clay loam soil	TDR	6.57	9.18	16.63	22.34	25.07	28.52	32.14
	TCSWR	6.26	10.07	16.10	21.62	25.43	28.40	31.89
	Absolute errors	0.31	0.89	0.53	0.72	0.36	0.12	0.25
Loess soil	TDR	6.96	12.61	14.82	17.41	20.68	26.44	33.31
	TCSWR	7.37	11.84	13.92	16.48	21.12	27.36	33.85
	Absolute errors	0.41	0.77	0.90	0.93	0.44	0.92	0.54