The Autonerdz Community Forums - Finally...They Are Here

Tom Roberts Autonerdz Administrator Picogroup Offline Autonerdz Founder Posts: 8,595 Olympia Washington USA Gender:	Finally...They Are Here Nov 17^th, 2009 at 12:09pm We got a batch of the Pico WPS500 pressure transducers in today. Still sorting out some details but we have a page up now for them. We will be updating this page with any changes. http://www.autonerdz.com/wps500.html
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joecar+ Guru Member Picogroup Offline Posts: 443 Southern California California USA	Re: Finally...They Are Here Reply #1 - Nov 18^th, 2009 at 9:00pm Hi Tom, Does it measure pressure like the PV350 rather than pressure difference like the FLS...? Can it measure wet pressure...? Thanks, Joe
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crackerclicker

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Re: Finally...They Are Here
Reply #2 - Nov 19^th, 2009 at 12:11am

tom,
in a previous reply you mentioned strange things happening with other transducers by snappy, ats, etc. are these kinds of issues a non issue with this particular transducer?

here is your earlier reply:
"We have hit a snag regarding an odd behavior of certain types of transducers we had never really explored. We are not sure yet, but it seems the type of transducer design as well as the materials impact this behavior. Many we have looked at, as candidates for this new package, have tested perfectly on the bench but under dynamic conditions, found during a running compression tests, the negative pressures skew. They show negative pressures that are impossible.

Many of this type are in use today and marketed by Snap-On, ATS and others. These sensors are just not suitable and do not meet our standards for accuracy. As you know, our group is a discerning bunch. But, we are not being too picky here, these are all wildly inaccurate. Some have software compensations that are designed to cover up the problem but they do not solve it.

We do think we are heading in the right direction with this and will soon be looking at an entirely different design transducer that I hope will not exhibit these issues. Once we do, we will have something quite unique and superior. We want to actually solve the problem, not cover it up.

The goal here is to get a transducer setup that is versatile, accurate, and produces a clean detailed pattern. More on this, as it develops.

We will eventually produce a presentation detailing the issues and comparing behavior of different units. Hopefully along with one that is the way it should be...."

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Brian Haley

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Re: Finally...They Are Here
Reply #3 - Nov 19^th, 2009 at 9:59am

Joe,
Yes this will measure pressure like the PV350, only much cleaner and capable of measuring very low pressures, used it yesterday to measure evap vacuum decay. There are some examples on our store page http://www.autonerdz.com/wps500.html including fuel pressure.
When the zoom feature is used, the signal is AC coupled and the results are similar to a Firstlook. Otherwise it is measuring actual pressure.

Crackerclicker,
Many of the transducers we tested were producing impossible results. For example, when compression testing with a custom probe built from sensor specs, we were finding vacuum readings on the intake stroke of -17 PSI. From what I understand, this is due to the effects of both the time between pressure changes and sudden changes in temperature due to quick pressure changes. The pico transducer performs well under these conditions.

Brian

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« Last Edit: Nov 19^th, 2009 at 10:51am by Brian Haley »

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Tom Roberts

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Re: Finally...They Are Here
Reply #4 - Nov 19^th, 2009 at 12:49pm

Joe,

Not running on all cylinders here at Autonerdz headquarters today. Storm knocked out everything and I am at least temporarily back online until the next one hits tonight. Brian is telecommuting today because he didn't get hit so bad at his place.

Brian covered it but I just wanted to add that yes, it does wet pressure. In fact, it has a neat little bleed valve which allows you to bleed out all the air so that trapped air does not interfere with reading small pulses.

Also, just to repeat here what I posted in the Open Forum:

Autonerdz is having our 10 year anniversary on January 1st. Hard to believe it has been that long since we launched this insane business venture.

We have been racking our brains trying to come up with a way to celebrate and give something special to our customers as a way of saying thank you.

We thought about all kinds of things but none that wouldn't cause someone to be disappointed. If we gave 10% off for a time, for example, then everyone who already purchased that item would feel like they missed out and want the special extended to them.

So...we nixed all those ideas. Just no way to prevent that from happening....

Oh, but wait.....no one has purchased one of these transducers yet...they just got here. There is no one to gripe if we do a 10 year anniversary special on these.

So, that is what we are doing. We are starting the party early and you can get 10% off on this item until the end of the year.

Just enter '10years' as a coupon code in the online shopping cart during checkout, or call, to complete your order before Dec 31st. This offer is subject to availability. Cannot be combined with any other discount. Only available when you purchase direct from Autonerdz.

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joecar+ Guru Member Picogroup Offline Posts: 443 Southern California California USA	Re: Finally...They Are Here Reply #5 - Nov 19^th, 2009 at 1:50pm Brian, Tom, Thanks for your replies. ----- Too bad about the storm, hope everyone/everything is ok. Regards Joe
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joecar+ Guru Member Picogroup Offline Posts: 443 Southern California California USA	Re: Finally...They Are Here Reply #6 - Nov 19^th, 2009 at 1:51pm So it's ok to use it to measure fuel pressure directly... I don't imagine it could be used to measure oil pressure, could it...? If so, how do you clean it out...?
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Tom Hardaway Senior Member Picogroup Offline Posts: 159 Joplin Missouri Missouri USA Gender:	Re: Finally...They Are Here Reply #7 - Nov 19^th, 2009 at 4:48pm Brian Haley wrote on Nov 19^th, 2009 at 9:59am: Joe, Yes this will measure pressure like the PV350, only much cleaner and capable of measuring very low pressures, used it yesterday to measure evap vacuum decay. Brian do you have the file of that evap test? Tom
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crackerclicker Super Nerd Picogroup Offline Elevation 834 ft Posts: 2,358 Watertown Wisconsin USA Gender:	Re: Finally...They Are Here Reply #8 - Nov 19^th, 2009 at 8:19pm wow! negative 17 psi is a helluva vacuum! so, for example, the modis (and others) have software that "hides" this, or compensates?
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Brian Haley Autonerdz Administrator Picogroup Offline Posts: 560 Olympia, WA Washington USA Gender:	Re: Finally...They Are Here Reply #9 - Nov 20^th, 2009 at 12:01pm I uploaded the Evap test data file to the drop site. Brian
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joecar+ Guru Member Picogroup Offline Posts: 443 Southern California California USA	Re: Finally...They Are Here Reply #10 - Nov 20^th, 2009 at 12:49pm I understand it can be "wetted" with gasoline... what about oil or atf...?
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Tom Roberts Autonerdz Administrator Picogroup Offline Autonerdz Founder Posts: 8,595 Olympia Washington USA Gender:	Re: Finally...They Are Here Reply #11 - Nov 20^th, 2009 at 1:07pm Joe, OK, I'm sure. Compatible with "Brake, clutch and other hydraulic fluids." Might be a good idea to flush out the chamber afterward just to keep it nice and avoid cross contamination..Cleaning is easy and covered in the included manual.
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john. Junior Member Offline I love YaBB 1G - SP1! Posts: 73 Gender:	Re: Finally...They Are Here Reply #12 - Nov 21^st, 2009 at 12:20am well my xmas present is sorted! was going for renewing my group memebership! been in before i know what im missing! buisness is good so that will be next!
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joecar+ Guru Member Picogroup Offline Posts: 443 Southern California California USA	Re: Finally...They Are Here Reply #13 - Nov 21^st, 2009 at 1:16am Tom Roberts wrote on Nov 20^th, 2009 at 1:07pm: Joe, OK, I'm sure. Compatible with "Brake, clutch and other hydraulic fluids." Might be a good idea to flush out the chamber afterward just to keep it nice and avoid cross contamination..Cleaning is easy and covered in the included manual. Tom, ok, thanks.
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Rick Hill LSD Guide Picogroup Offline Deceased Posts: 660 Gender:	Re: Finally...They Are Here Reply #14 - Dec 5^th, 2009 at 7:59am Should anyone want to make up their own adapters and retain the original coupling to the transducer they are Foster MFG. CO. 2 series. You can go to http://www.couplers.com/page.php?P=distributors and find a distributor nearest you. Attached is a pdf for the sockets and plugs available in the 2 series.
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