Inspection of Threads Simple Protractor angles Angle Gauges

Inspection of Threads

Simple Protractor (angles)

Angle Gauges

Spring slope

Angle Gauge Blocks

slope measurements

Level Gauge

Report about Volume measurement Viscosity measurement Moisture measurement p. H is a parameter that quantifies the level of acidity or akalinity in a chemical solution. • It defines the concentration of hydrogen atoms in the solution in grams/litre and is expressed as: p. H D log 10[1/HC] where HC is the hydrogen ion concentration in the solution • Gas sensing and analysis Catalytic (calorimetric) sensors Paper tape sensors Liquid electrolyte electrochemical cells Solid-state electrochemical cells (zirconia sensor) Catalytic gate FETs Semiconductor (metal oxide) sensors Organic sensors Piezoelectric devices Infra-red absorption Mass spectrometers Gas chromatography • •

Stroke and Compression Ratio

Compression ratio • • • Stroke Ls (Vernier Caliper) Combustion chamber stroke Lc Rc=(Vs+Vc)/Vc Piston diameter (micrometer) Vs= piston area * Ls Vc= piston area * Lc

Engine performance • Torque, N. m (robe brake – water brake – hydraulic brake – eddy current brake – electric brake) • Engine speed (Tachometer=speedometer) • Power (watt – kw – HP) • Power= torque * engine speed • Fuel consummation (litre/100 km)

Max. power • Gasoline : open check valve to max. • Diesel : max. fuel

Dynamometer ﺍﻟﺪﻳﻨﻮﻣﻴﺘﺮ • • • Robe brake (engine speed * weight * radius) Water brake Hydraulic brake Eddy current Electric brake