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https://yabb.autonerdz.com/cgi/yabb2//YaBB.pl General Public Area >> PicoScope >> pressure transducer and degree markers https://yabb.autonerdz.com/cgi/yabb2//YaBB.pl?num=1246311419 Message started by matt c on Jun 29^th, 2009 at 1:36pm

Title: pressure transducer and degree markers
Post by matt c on Jun 29^th, 2009 at 1:36pm

I,ve seen that the ATS Escope has a built in program to add degree markers for use with in cylinder pressure transducer waveforms. Does pico offer anything similar? I'm looking into annowave. Any other ideas. thanks

Title: Re: pressure transducer and degree markers
Post by Earl Davis on Jun 29^th, 2009 at 3:05pm

Matt,

Use ms paint and lay your cursors by changing the time line to degrees. We know that compression stroke to compression stroke on the same cylinder is equal to 720 degrees. So for example if the complete 720 degree cycle was 180 ms than you know 90 ms is equal to 360 degrees and 45 ms is equal to 180 degrees. From there you can figure out and add your own degree markers. I will try and post and example of this later. HTH

Earl

Title: Re: pressure transducer and degree markers
Post by Jim_Wilson on Jun 29^th, 2009 at 5:46pm

Matt,

Quote:

I'm looking into annowave.

Annowave is excellent for what it is, but a bit of an overkill if all you want to do is put those marks on a waveform.

Download the annowave demo and try it out. It may be that you really like all the main features (annotation).

Annowaves primary function is to bridge the gap between vector based illustration programs (photoshop and Corel paint shop pro) and ms paint in the realm of waveform documentation.

It does a very good job of doing that, but if you're like me and want/need more freedom and power, then a real illustration program is better.

I would guess that annowave would serve the vast majority of techs far better than what I use.

Title: Re: pressure transducer and degree markers
Post by matt c on Jun 30^th, 2009 at 1:43pm

Thanks for your replies. One other question, can the firstlook sensor be used in cylinder? Can it handle that kind of pressure?

Title: Re: pressure transducer and degree markers
Post by Tom Roberts on Jun 30^th, 2009 at 3:08pm

Matt,

The FLS would likely be destroyed by cylinder pressures. Wouldn't make sense to use it there anyway since it doesn't measure pressure.

There are some good examples of degree markings on compression waves in the Wrangler From Hell movie done with Paint.

Title: Re: pressure transducer and degree markers
Post by Kevin Claybrook on Jul 3^rd, 2009 at 12:01pm

Tom

Quote:

There are some good examples of degree markings on compression waves in the Wrangler From Hell movie done with Paint.

It looks to me like you were able to use multiple measurment cursors with Pico to mark specific degrees of crank shaft rotation then simply copy the screen image and label the cursor marks in MS Paint. If so, how did you get more than two mesurement cursors with Pico?? I am thinking that this may be a feature of a newer release, I'm still using 6.2.2.12.

Thanks,

Kevin

Title: Re: pressure transducer and degree markers
Post by Tom Roberts on Jul 3^rd, 2009 at 12:47pm

Kevin,

Brian did that by overlaying one image on another in Paint. There are still only two vertical rulers within PicoScope.

Title: Re: pressure transducer and degree markers
Post by Kevin Claybrook on Jul 3^rd, 2009 at 10:27pm

Tom,

I understand now and even tried it. Learned something new today, thanks. :)