Table 3 List of instruments used in experiments.

From: Performance and water-energy nexus aspects of stagnant water layer cooled zero-tilt solar photovoltaic module

S. No

Instrument

Measurement Range

Least Count

Accuracy

Uncertainty

1.

EDM-80 Analog DC Ammeter

0.0 to 3.0 A

0.05 A

± 0.06 A (± 2.0% of full-scale division)

± 0.025 A

2.

EDM – 80 Analog DC Voltmeter

0.0 to 50.0 V

1.0 V

± 1.0 V (± 2.0% of full-scale division)

± 0.50 V

3.

HTC-550 Infra-Red Thermometer

−50.0 to 550.0 °C

0.1 °C

± 0.5 °C

± 0.1 °C

4.

HTC-AVM-03 Digital Anemometer

0.0 to 30.0 m/s

0.01 m/s

± 0.7 m/s

± 0.01 m/s

−10.0 to 50.0 °C

0.1 °C

± 1.5 °C

± 0.1 °C

0.0 to 99.9% RH

0.1% RH

± 5.0% RH

± 0.1% RH

5.

HTC LX101-A Lux Meter

(0.0 to 200000 lx) 0.0 to 1580.0 W/m2

0.1 lx

± 5.0% of the reading

± 0.1 lx

6.

Multiparameter Waterproof Meter (Model: HI98195, Hanna Instruments, Rhode Island, USA)

0.0 to 14.0 pH

0.01 pH

± 0.02 pH

± 0.01 pH

Electrical Conductivity – 0.0 to 9999 µS/cm;

0.0 to 200.0 mS/cm

1.0 µS/cm; 0.01 mS/cm

± 1.0 µS/cm

± 1.0 µS/cm

Total Dissolved Solids – 0.0 to 9999 ppm;

0.0 to 400.0 ppt

1.0 ppm; 0.01 ppt

± 1.0% of the reading

± 1.0 ppm

Salinity –

0.0 to 70.0 PSU

0.01 PSU

± 0.01 PSU

± 0.01 PSU

7.

Benchtop Turbidity Meter (Model: HI88703 Hanna Instruments, Rhode Island, USA)

0.0 to 4000.0 NTU

0.01 NTU

± 2.0% of reading + 0.02 NTU

± 0.01 NTU