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Table 2 Specifications of measuring instruments

From: An experimental study on effect of dust on power loss in solar photovoltaic module

Instrument

Rating and range

Application

Multimeter (MASTECH, M3900)

DC voltage: 200 mV/2/20/200/1000 V ± 0.5%

DC current: 20 μA ± 2.0%, 200 μ/2 m/20 mA ± 0.8%, 200 m/2A ± 1.2%, 10A ± 2.0%

Resistance: 200/2 k/20 k/200 k/2 MΩ ± 0.5%, 20 MΩ ± 1.0%

PV module output voltage and current measurement

Solar irradiation meter (DT-1307)

Resolution: 1 W/m2

Sampling time: approx. 0.25 s

Range: 1999 W/m2

Accuracy: ± 5%

Size (mm): 160 (L)* 63 (W)* 28(H)

Weight: about 250 g

Operating temperature: 40 °C

Solar irradiation intensity measurement

Rheostat load

Resistive loads with adjustable node

Resistance: 50 Ω

Current: 0.71 A (maximum)

Power: 35.5 W

Single-tube single-wire wound

Restive load for voltage and current measurement