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Table 2 List of instruments and their uncertainty analysis

From: Experimental assessment and optimization of the performance of a biodiesel engine using response surface methodology

Instrument

Measured Entity

Range

Units

Accuracy

% Uncertainties

Temperature indicator

Temperature

0–1200

°C

\(\pm 1\)°C

\(0.1\)

Torque indicator

Torque

0–100

N-m

\(\pm 0.1\)

\(0.2\)

Pressure sensor

Pressure

0–100

bar

\(\pm 1\)

\(0.1\)

Fuel flow indicator

Mass flow rate

0–99

kg/h

\(\pm 0.02\)

\(0.12\)

Gas analyzer

CO

0–100

%

\(\pm 0.03\)

\(0.1\)

NOx

0–10000

ppm

±25

\(0.01\)

Calculated results

     

 BP

–

–

kW

–

\({0.1}\)

 SFC

–

–

kg/kWh

–

\(3.1\)