Bitscope for tracing rifle or shotgun chamber pressure?

Might it be possible to utilize your Bitscope for Raspberry Pi whereby to convert a strain gauge resistance change into a nominal PSI chamber pressure, for a strain gauge glued to the barrel of a shotgun or rifle above mid chamber? The intent would be to capture an oscilloscope like image of the output over time whereby to image chamber pressure from ignition to barrel exit, and to quantify the pressure peak as well as it's placement in time?

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dougw 11 months ago

Interesting idea. We actually make sensors that record shockwaves after exit - complete waveforms. The sensor elements we use are strain gage style pressure sensors so your strain gage idea should work, assuming the chamber provides enough strain signal and as Michael says, the strain gages can be properly mounted. It might be tough to calibrate to actual chamber pressure, but you should be able to determine if a load creates higher or lower pressure than a commercial load.
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Silver_Is_Money 11 months ago in reply to dougw

There was until recently a commercially available system called the 'Pressure Trace II', but the owner had heart surgery and closed down both manufacture and sales. It called for a 5 volt 350 Ohm strain gage, model number CEA-06-125UN-350.
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Silver_Is_Money 11 months ago in reply to dougw

There was until recently a commercially available system called the 'Pressure Trace II', but the owner had heart surgery and closed down both manufacture and sales. It called for a 5 volt 350 Ohm strain gage, model number CEA-06-125UN-350.
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