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5 Series Oscillator

The oscillator drives the sensor with a 2MHz oscillating carrier frequency (typically), the control circuit is then used to keep this constant and compensate for changes in temperature. Changes in capacitance at the sensor tip modulate this frequency. This modulation is then translated into an output voltage by the demodulator. The 5 Series also features an onboard memory which stores calibration. This eliminates human error at installation by removing the need to manually enter calibration data. Oscillators are usually engine mounted in a cooled enclosure or mounted externally with a 10 m (32.8 ft) cable.

 

The oscillators are 87mm (3.4″)  long by 25mm (1″) wide and 53mm (2.1″) high.  It is quite common for multiple oscillators to be placed in an oscillator enclosure either to allow external cooling with shop air or to provide mechanical protection.

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