Direct and indirect measurement methods. Theory of errors in measurement. Temperature measurement. Contact sensors - thermocouples, resistance, dilatation sensors. Non-contact temperature measurement - pyrometers - subjective (luminance and color), objective. Pyrometers - total, monochromatic, bandpass. Two color pyrometer. Effect of emissivity. Thermal imaging cameras. Measurement of fluid pressure. Liquid pressure gauges, strain gauge and piezoelectric. Velocity and flow rate. Aperture, nozzle, pitot tube, Venturi tube rotameters. Flowmeters turbine, speed, induction, vortex, ultrasonic, mass, anemometers, correlation. Laser Doppler systems LDA, LDV, PIV. Volumetric flow rate meter. Hygrometers: expansion, resistive, capacitive, psychometry, dewpoint, condensation method. Analysis of the chemical composition of the gases. Analyzers: thermal conductivity, thermochemical, photometric. Fundamentals of signals. Signal amplitude, root mean square value (RMS), peak-peak, variance, correlation function, histogram. Sampling. Shannon-Kotelnikov theorem, aliasing. Fourier series, Fourier transform, discrete Fourier transform, spectral power density. A/D converters. Data aquisition systems. Filtration time series. Integration and derivation of time series. Archiving of data. Database systems.