Understanding Smart Sensors - Nomads.usp

364 Understanding Smart Sensorstemperature coefficient of offset (Tco) the percentage change in the offsetper unit change in temperature relative to the offset at a specified temperaturetemperature coefficient of resistance the percentage change in the dc inputimpedance per unit change in temperature relative to the dc input impedanceat a specified temperaturetemperature error the maximum change in output at any input value in theoperating range when the temperature is changed over a specified temperaturerangetemperature hysteresis the difference in output at any temperature in theoperating temperature range when the temperature is approached from theminimum operating temperature and when approached from the maximumoperating temperature with zero input appliedtemperature-wattage characteristic the relationship, at a specified ambienttemperature, between the thermistor temperature and the applied steady-statewattagethermal compensationthermal offset shiftthermal span shiftSee compensationSee temperature coefficient of offsetSee temperature coefficient of full-scale spanthermal time constant the time required for a thermistor to change to63.2% of the total difference between its initial and final body temperatureswhen subjected to a step function change in temperature under zero-powerconditionsthermal zero shiftSee temperature coefficient of offsetthermistor a thermally sensitive resistor whose primary function is toexhibit a change in electrical resistance with a change in body temperaturethin film a technique using vacuum deposition of conductors and dielectricmaterials onto a substrate (frequently silicon) to form an electrical circuittime constant time required for a voltage or current in a circuit to rise to63% of its steady final value or to fall to 37% of its initial valuetopologytorrmethod of connecting data lines to system nodespressure unit equivalent to 1 mm of mercury (mmHg)transceiver the combination of radio transmitter and receiver, usually usingsome common circuitry, in a portable or mobile application