Smart River Monitoring Using Wireless Sensor Networks

Table 1

Characteristics of the sensor nodes used in the project.

Sensor node/characteristics	Range/concentration	Sensitivity	Accuracy	Cable length	The temperature level of operation	pH levels
Temperature (Pt-1000)	0 to 100°C	±0.1	±0.1°C at 0°C	150 cm	-	-
pH probe	0–14 pH	±0.1	-	∼500 cm	0∼80°C	-
Conductivity probe		±1	-	∼500 cm	-	-
Calcium probe	0 to 100 mg/L		-	-	5 to 50°C	5–8 pH
Nitrate probe	-		-	-	5 to 50°C	2–11 pH
Fluoride probe	1-25 mg/L		-	-	5 to 50°C	4–8 pH
ORP probe	0∼±1999 mV	-	-	500 cm	-	-
Dissolved oxygen probe	4–7 mg/L (dry)/12-13 mg/L (rainy)	-	±2%	500 cm	50°C	-