Table 1 Accuracy of measuring instruments.

From: Influence of inflow directions and setting angle of inlet guide vane on hydraulic performance of an axial-flow pump

Instrument

Range

Uncertainty (%)

Absolute pressure transducer

0–200 kPa

\(\pm\) 0.25

Differential pressure transducer

0–500 kPa

\(\pm\) 0.2

Rotational sensor

0–20,000 r/min

\(\pm\) 0.02

Flowmeter

0–900 m3/h

\(\pm\) 0.2

Torque meter

0–200 Nm

\(\pm\) 0.2