<div class="gmail_extra">Hi all!</div><div class="gmail_extra"><br></div><div class="gmail_extra"><br></div><div class="gmail_extra">I need a sensor control level rice husk in the reactor .if you know methol usefull or sensor control level, you can help me.</div>
<div class="gmail_extra">I am working a gasifier rice husk type updraft,feed air lock.</div><div class="gmail_extra"><br></div><div class="gmail_extra">Thanks!</div><div class="gmail_extra">Cuong.pq<br><br><div class="gmail_quote">
2012/4/27 SHIVANAND Ramachandran <span dir="ltr"><<a href="mailto:nsyeecs@vsnl.com" target="_blank">nsyeecs@vsnl.com</a>></span><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<p> </p>
<p>Pete,</p>
<p><br><br>We use MPXV7002 & MPXV5004, whose DP span is lesser ( but sufficient for our gasifiers) but the the output voltage span is more. Which is important, considering that the least count when measured using Arduino is around 5 mV (5 V/1024).</p>
<p>So, if you use MPXV12 , which has an output span of 60 mV for a dP of 1020 mmWC, you will effectively get a least count of (1020/ (60/5))= 85 mmWC, which is of little use, unless you amplify the output of the transducer.</p>
<p>Regards</p>
<p> </p>
<p><br>Shivanand Ramachandran</p>
<p><br>Infinite Energy (P) Ltd</p>
<p>New Delhi</p><div><div class="h5">
<p>On 26-04-2012, Pete & Sheri wrote:</p>
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<p class="MsoNormal"><span style="font-size:11.0pt;color:#1f497d">Thank you, Shivanand.</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1f497d"> I have found the 10 Kpa range sensors. The MPX12DP, case 344. Is that what you use? </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1f497d"> Is there a better choice?</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1f497d"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1f497d">Pete Stanaitis</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1f497d">----------------</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1f497d"> </span></p>
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<div style="border:none;border-top:solid #b5c4df 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><strong><span style="font-size:10.0pt">From:</span></strong><span style="font-size:10.0pt"> <a href="mailto:gasification-bounces@lists.bioenergylists.org" target="_blank">gasification-bounces@lists.bioenergylists.org</a> [mailto:<a href="mailto:gasification-bounces@lists.bioenergylists.org" target="_blank">gasification-bounces@lists.bioenergylists.org</a>] <strong>On Behalf Of </strong>SHIVANAND Ramachandran<br>
<strong>Sent:</strong> Thursday, April 26, 2012 3:33 AM<br><strong>To:</strong> <a href="mailto:gasification@lists.bioenergylists.org" target="_blank">gasification@lists.bioenergylists.org</a><br><strong>Subject:</strong> Re: [Gasification] Low Pressure sensors</span></p>
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<p class="MsoNormal"> </p>
<p>Hi Pete,</p>
<p>We use arduino microcontrollers for our gasifiers.</p>
<p>You get low cost pressure transducers from Freescale semiconductors. They synch pretty well with the arduino hardware ( matching supply voltage and output range). They cost about $10 each and are very reliable and reasonably accurate if you take care of the electronics. You can easily get them on any online electronics store like digikey, mouser, etc.</p>
<p>I believe Allpowerlabs also use similar transducers (atleast look the same)</p>
<p><br>Regards</p>
<p> </p>
<p><br>Shivanand Ramachandran</p>
<p><span style>Infinite Energy Private Limited<br>First Floor, Baba House<br>149-A, Kilokri<br>New Delhi - 110014<br>Phone 011-65191937, 65273819<br>Fax : 011 - 26348472</span></p>
<p> </p>
<p><br>On 26-04-2012, Pete & Sheri wrote:</p>
<p class="MsoNormal"> </p>
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<p class="MsoNormal"> </p>
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<p class="MsoNormal"><span style="font-size:11.0pt;color:#1f497d">Hello Stephen.</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1f497d"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1f497d"> The link you supplied to Dwyer was for a Switch, not a sensor. I didn’t make myself clear.</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1f497d">I am looking for a sensor in the range of minus 20 inches WC to plus 20 inches WC that will give me an electrical output in proportion to the pressure being sensed, so I can graph the quantity and use its magnitude to control the system.</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1f497d"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1f497d">Sorry for my poor quality communication,</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1f497d">Pete Stanaitis</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1f497d">---------------</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1f497d"> </span></p>
<div style="border:none;border-top:solid #b5c4df 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><strong><span style="font-size:10.0pt">From:</span></strong><span style="font-size:10.0pt"> <a href="mailto:gasification-bounces@lists.bioenergylists.org" target="_blank">gasification-bounces@lists.bioenergylists.org</a> [<a href="mailto:gasification-bounces@lists.bioenergylists.org" target="_blank">mailto:gasification-bounces@lists.bioenergylists.org</a>] <strong>On Behalf Of </strong><a href="mailto:sabbadess@aol.com" target="_blank">sabbadess@aol.com</a><br>
<strong>Sent:</strong> Wednesday, April 25, 2012 2:18 PM<br><strong>To:</strong> <a href="mailto:gasification@lists.bioenergylists.org" target="_blank">gasification@lists.bioenergylists.org</a><br><strong>Subject:</strong> Re: [Gasification] Process controllers for gasifier/engine control and datalogging, Are there any Arduino users out there?</span></p>
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<p class="MsoNormal"> </p>
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<p class="MsoNormal"><span style="font-size:10.0pt">Pete,</span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt"> </span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt">Try this:</span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt"> </span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt"><a href="http://www.sustainablesupply.com/Dwyer-Instruments-ADPS-06-2-N-Pressure-Switch-Dif-p/w228350.htm?gclid=COu_36jb0K8CFcfb4AodKQxUHA&CAWELAID=1307461896&cagpspn=pla" target="_blank"><span style="color:windowtext">http://www.sustainablesupply.com/Dwyer-Instruments-ADPS-06-2-N-Pressure-Switch-Dif-p/w228350.htm?gclid=COu_36jb0K8CFcfb4AodKQxUHA&CAWELAID=1307461896&cagpspn=pla</span></a></span></p>
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<div>
<p class="MsoNormal"><span style="font-size:10.0pt"> </span></p>
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<div>
<p class="MsoNormal"><span style="font-size:10.0pt">At least it will give you a digital threshold. I have had good luck with Dwyer stuff.</span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt"> </span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt">Stephen Abbadessa</span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:10.0pt">-----Original Message-----<br>From: Pete & Sheri <<a href="mailto:spaco@baldwin-telecom.net" target="_blank"><span style="color:windowtext">spaco@baldwin-telecom.net</span></a>><br>
To: Gasification <<a href="mailto:Gasification@bioenergylists.org" target="_blank"><span style="color:windowtext">Gasification@bioenergylists.org</span></a>><br>Sent: Wed, Apr 25, 2012 2:46 pm<br>Subject: [Gasification] Process controllers for gasifier/engine control and datalogging, Are there any Arduino users out there?</span></p>
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<div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt">I have been interested in Jim Mason (and company)’s approach to process control and datalogging using an Arduino based microcontroller since he first announced its existence. I have done a little googling about Arduino in general, and now I am sorta fascinated with it. I already have a fair amount of electronic hobby stuff around here, so I bought an Arduino ATMega2560 last week ($60) and am starting to get familiar with it.</span></p>
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<div>
<p class="MsoNormal"><span style="font-size:10.0pt"> The reason for this post:</span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt"> Is anyone else out there using the Arduino as a process controller?</span></p>
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<div>
<p class="MsoNormal"><span style="font-size:10.0pt">And, has anyone found inexpensive low pressure sensors? I can’t seem to find any in the +/- 20 inches WC range that are cheaper than about $40 in a 1 to 3 quantity.</span></p>
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<div>
<p class="MsoNormal"><span style="font-size:10.0pt"> </span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt">If you don’t know what I am talking about, go to:</span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt"> </span></p>
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<div>
<p class="MsoNormal"><span style="font-size:10.0pt"><a href="http://wiki.gekgasifier.com/w/page/6123727/Gasifier-Control-Unit" target="_blank">http://wiki.gekgasifier.com/w/page/6123727/Gasifier-Control-Unit</a></span></p>
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<div>
<p class="MsoNormal"><span style="font-size:10.0pt">(If I was a little farther along, I’d just buy one)</span></p>
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<div>
<p class="MsoNormal"><span style="font-size:10.0pt"> </span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt">and then go to:</span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt"> </span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt"><a href="http://www.arduino.cc/" target="_blank">http://www.arduino.cc/</a></span></p>
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<div>
<p class="MsoNormal"><span style="font-size:10.0pt"> </span></p>
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<div>
<p class="MsoNormal"><span style="font-size:10.0pt">A whole ‘nother world!!!</span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt"> </span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt">Pete Stanaitis</span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt">---------------- </span></p>
</div>
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