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BACKGROUND TO INSTRUMENTATION
THE AERIAL ENVIRONMENT
THE SOIL AND SOIL WATER
6 other sections not shown
absorption accuracy adjustment agricultural amount analogue application attenuation automatic balance beam bridge circuit bulb bulk bulk density calibration capacitance Chapter coil commercial courtesy of N.I.A.E. crop data logging density dependent detected detector determined device dial indicating effect electrical electrical resistance electrodes element employ energy equipment error filter flow frequency response galvanometer grain heat humidity hygrometer indication infra-red instrument lamp latter lever linear liquid load cells machines material mbar measured quantity mechanical method moisture content moisture meter neutron neutron moderation operation optical oscillator output oven photocell photodetector photomultiplier photons Plate pointer pressure probe produce pulse radiation range ratio recording reference resistance thermometer rotating sample scale Section sensitivity sensor signal soil speed standard strain gauge suitable surface switch technique temperature tensiometer thermistor thermocouple tractor transducer tube units voltage wavelength weigher weight