Research Article
Low-Cost SCADA System Using Arduino and Reliance SCADA for a Stand-Alone Photovoltaic System
Table 4
Measurement errors of sensor system.
| Number | Sensor | Value | Calibrated instrument | Value | Measurement error |
| (1) | PV-voltage sensor | 15.3 V | Voltmeter-ammeter | 15.5 V | 1.31% | (2) | Battery-voltage sensor | 13.84 | Voltmeter-ammeter | 14.33 | 3.42% | (3) | PV-current sensor | 3.22 A | Voltmeter-ammeter | 2.77 A | 1.62% | (4) | Battery-current sensor | 3.66 A | Voltmeter-ammeter | 3.55 A | 3.10% |
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