In this video, I compare five transducers to see if they are adequate for in-cylinder pressure testing. I compare all four sensors to a tried and true Fluke PV350. The cheapest is an ebay/amazon sensor ($20), next I test two Honeywell sensors ($65 and $88), and last I test an SSI Technologies sensor ($125). All are available from DigiKey and other retailers.
If you're only interested in the results, here are the timestamps where I show the individual results:
Fluke PV350 (old design) - 15:00
Ebay/Amazon sensor - 25:14
Honeywell 300psi (px2an1xx300paaax) - 30:48
Honeywell 500psi (px2af1xx500paaax) - 36:17
SSI Technologies (p52-500-a-b-i36-4.50vp) - 41:14
SSI digikey link: https://www.digikey.com/en/products/detail/amphenol-ssi-technologies/P51-500-A-B-I36-4-5OVP-000-000/1665820?s=N4IgTCBcDaIAoFYCMBaBAGdKCCKBCKAkgMwBsKALGgPIBqcIAugL5A
I use a Pico Scope to measure in-cylinder pressure along with secondary ignition and intake pulses (from a home-made tool). In this video, I cover the difference between gauge and absolute pressure and I explain how to setup the custom probes for each of the sensors.
During analysis, I cover the speed at which the sensors output information and I also cover the delay from the sensor from when it sees pressure vs. when it outputs its signal.