Quartz Thermometers
About the quartz thermometers
The quartz thermometer makes use of the
principle that the resonant frequency of a material such as quartz is
a function of temperature, thus enabling temperature changes to be
translated into frequency changes. The temperature-sensing element
consists of a quartz crystal enclosed within a probe (sheath). The
crystal is connected electrically so as to form the resonant element
within an electronic oscillator. Measurement of the oscillator
frequency therefore allows the measured temperature to be calculated.
The instrument has a very linear output characteristic over the
temperature range between -40°C and +230°C. The measurement resolution
given is 0.1°C. The characteristics of the instrument are generally
very stable over long periods of time and therefore only infrequent
calibration is necessary.
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Temperature Measurements
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