Table 4 List of instruments and their accuracy along with percentage of uncertainties [25]
From: Utilization of unattended waste plastic oil as fuel in low heat rejection diesel engine
Measurement | Type & manufacturer | Measurement technique | Accuracy (%) | Uncertainty |
|---|---|---|---|---|
Load | Strain gauge, Sensotronics Sanmar | Load cell | ± 10 N | ± 0.2 |
Speed | Kubler, Germany | Magnetic pickup principle | ± 10 rpm | ± 0.1 |
Fuel flow measurement | Differential pressure transmitter | Volumetric measurement | ± 0.1 cm3 | ± 1 |
CO | AVL exhaust gas analyser, Austria | NDIR technique | ± 0.02% | ± 0.2 |
HC | AVL exhaust gas analyser, Austria | NDIR technique | ± 0.03% | ± 0.1 |
NOx | AVL exhaust gas analyser, Austria | NDIR technique | ± 12 ppm | ± 0.2 |
Smoke | AVL smoke meter | Opacimeter | ± 1 HSU | ± 1 |
EGT indicator | Make Wika | Thermocouple | ± 1 °C | ± 0.15 |
Pressure pick up | PCB, piezotronics | Magnetic pickup principle | ± 1 kg | ± 0.1 |
Crank angle encoder | Kubler, Germany | Magnetic pickup principle | ± 1 deg | ± 0.2 |