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Table 1 Test instrument, type and parameter

From: Influence of operating conditions on solar energy utilization efficiency of flat plate solar collector

Test parameters

Test instrument

Type

Accuracy

Solar radiation intensity

Solar pyrometer

TBQ-2

 ≤ 0.2%

Water flow

Ultrasonic flowmeter

TUF-JZ200SW

 ≤ 0.2%

Temperature

Thermal resistance

PT100

 ± 0.2%

Data acquisition unit

JK4000

 ≤ 0.3%