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P160
Excitation – The external electrical voltage and/or current applied to a transducer for its proper operation.
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P161
NOTE: In the sense of a physical quantity to be measured by a transducer, use "measurand"
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P162
NOTE: (S) Usually expressed as range(s) of voltage and/or current values. NOTE: Also see ”maximum excitation.”
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P163
Excitation Peak-to-Peak Amplitude – The peak to peak variation of the excitation waveform.
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P164
Exposed Sensing Element – Sensing element is in direct contact with the medium being sensed.
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P165
Isolated Sensing Element – A sensing element that employs design characteristics that isolate the transducer element from the fluid being measured (Measured Fluid).
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P166
Maximum excitation 1 – The maximum value of Excitation voltage or current that can be applied to the Transducer at Room conditions without causing damage or performance degradation beyond specified tolerances.
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P167
Media Compatibility or Medium Compatibility – The sensor’s ability to operate in a specified pressure media without experiencing a change in performance due the sensor chemically, electrically or mechanically reacting with the media.
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P168
Output 1 – The electrical quantity, produced by a transducer, which is a function of the applied measurand.
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P169
Sensing Element 1 – The part of the transducer that responds directly to the measurand.
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P170
Sensing Mechanism – Transduction mechanism through which the measurand is transduced from one form of energy to another, e.g. pressure to electrical signal. Sensing mechanisms include but are not limited to the following: Capacitive, Electromagnetic, Inductive, Piezoelectric, Piezoresistive and Optical.
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P172
Transducer 1 – A device which provides a usable output in response to a specified measurand .
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P173
NOTE: The term ”Transducer” is usually preferred to ”Sensor” and ”Detector” and to such terms as ”Flowmeter,” ”Accelerometer” and ”Tachometer”; it is always preferred to ”Pickup,” ”Gage” (when not equipped with a dial-indicator), ”Transmitter” (which has an entirely different meaning in telemetry technology), ”Cell,” and ”End Instrument.”
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P174
Warm-up Period 1 – The period of time, starting with the application of excitation to the transducer, required to assure that the transducer will perform within all specified tolerances.
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P177
Dynamic Capacitive Transducer – A capacitive transducer that can only resolve the time-varying component of the measurand but does not resolve the steady component of the measurand.
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P178
Dynamic and Static Capacitive Sensor – A capacitive transducer that can resolve both the time-varying component of the measurand and the steady component of the measurand.
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