For the best frequency response use a strain gauge pressure transducer that provides a mV output without any amplification.
The increased use of digital electronics to characterise, condition and amplify the output of a pressure transducer offer the user many benefits, but the trade-off is that the natural frequency response of the sensor is masked by the damping, filtering and averaging of the transducers output signal by the smart electronics.
Typically only a few resistor components is required to condition the millivolt output from a strain gauge pressure sensor in order to rationalise the signal without compromising the natural response of the pressure sensing diaphragm.
The IMP-LR low range pressure transducer which covers ranges from 25 mb up to 1000 mb gauge can provide a milli-volt output from a silicon strain gauge diaphragm. Semiconductor strain gauges have very high gauge factors which make it possible to use a small size silicon chip which in turn helps increase the natural frequency of the sensing diaphragm.
For ranges between 1 and 10 bar gauge or absolute the IMP strain gauge pressure sensor uses a ceramic thick film strain gauge diaphragm which has a high dynamic response due to the high rigidness of ceramic compared to other sensing materials.
The TPS high range pressure transducer can measure pressures from 10 up to 1000 bar via 17-4ph stainless steel sensing diaphragm with bonded foil strain gauges which provide a high dynamic response particularly at higher ranges.
In the case of dynamic response it is true to say that less is more when it comes to conditioning the output signal of a pressure sensor for optimum frequency response.
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