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Here is 'swinging finger' one that we have been using for the last year or so.<div><br></div><div><a href="http://www.hensortech.com/">http://www.hensortech.com/</a> </div><div><br></div><div>Alex<br _moz_editor_bogus_node="TRUE" _moz_dirty=""><br><br><div id="editor_signature"></div>On Tuesday 08/05/2012 at 1:20 pm, Art Krenzel wrote: <blockquote type="cite"><style>} { font-size: 10pt; } --></style><div class="hmmessage"><div>Cuong,<br> <br>I have been waiting for someone else to suggest bin level sensors such as you are interested in but no one has come forward yet.<br> <br>Have you looked into rotary bin level sensor such as this in your search?<br> <br><a target="_blank" href="http://www.monitortech.com/product_p_rotary.shtml">http://www.monitortech.com/product_p_rotary.shtml</a><br> <br>The paddles can be located some distance from the sensor by increasing the shaft length. The bearings can be protected from high heat by locating them farther from the body of the gasifier.<br><br>Art Krenzel, P.E.<br>PHOENIX TECHNOLOGIES<br>10505 NE 285th Street<br>Battle Ground, WA 98604<br><br> <br><font size="3"><span class="ecxmessageBody">Until the pain of remaining the same is greater than the pain of change most people prefer to remain the same</span><br></font><br><br><br><br><br> <br><div><div id=""></div><hr id="">Date: Fri, 27 Apr 2012 15:31:05 +0700<br>From: pqcuong84@gmail.com<br>To: nsyeecs@vsnl.com; gasification@lists.bioenergylists.org<br>Subject: Re: [Gasification] Low Pressure sensors<br><br><div class="ecxgmail_extra">Hi all!</div><div class="ecxgmail_extra"><br></div><div class="ecxgmail_extra"><br></div><div class="ecxgmail_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="ecxgmail_extra">I am working a gasifier rice husk type updraft,feed air lock.</div><div class="ecxgmail_extra"><br></div><div class="ecxgmail_extra">Thanks!</div><div class="ecxgmail_extra">Cuong.pq<br><br><div class="ecxgmail_quote">2012/4/27 SHIVANAND Ramachandran <span><<a target="_blank" href="mailto:nsyeecs@vsnl.com">nsyeecs@vsnl.com</a>></span><br><blockquote style="padding-left: 1ex; border-left-color: rgb(204, 204, 204); border-left-width: 1px; border-left-style: solid;" class="ecxgmail_quote"><u></u><div> <br>Pete,<br><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).<br>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.<br>Regards<br> <br><br>Shivanand Ramachandran<br><br>Infinite Energy (P) Ltd<br>New Delhi<br><div><div class="h5">On 26-04-2012, Pete & Sheri wrote:<br><br><div> </div><blockquote style="width: 100%; padding-left: 5px; margin-left: 5px; border-left-color: rgb(16, 16, 255); border-left-width: 2px; border-left-style: solid;"><div><p class="ecxMsoNormal"><span style="color: rgb(31, 73, 125); font-size: 11pt;">Thank you, Shivanand.</span></p><p class="ecxMsoNormal"><span style="color: rgb(31, 73, 125); font-size: 11pt;"> I have found the 10 Kpa range sensors. The MPX12DP, case 344. Is that what you use? </span></p><p class="ecxMsoNormal"><span style="color: rgb(31, 73, 125); font-size: 11pt;"> Is there a better choice?</span></p><p class="ecxMsoNormal"><span style="color: rgb(31, 73, 125); font-size: 11pt;"> </span></p><p class="ecxMsoNormal"><span style="color: rgb(31, 73, 125); font-size: 11pt;">Pete Stanaitis</span></p><p class="ecxMsoNormal"><span style="color: rgb(31, 73, 125); font-size: 11pt;">----------------</span></p><p class="ecxMsoNormal"><span style="color: rgb(31, 73, 125); font-size: 11pt;"> </span></p><div><div style="border-width: 1pt medium medium; border-style: solid none none; border-color: rgb(181, 196, 223) currentColor currentColor; padding: 3pt 0in 0in;"><p class="ecxMsoNormal"><strong><span style="font-size: 10pt;">From:</span></strong><span style="font-size: 10pt;"> <a target="_blank" href="mailto:gasification-bounces@lists.bioenergylists.org">gasification-bou<wbr>nces@lists.bioenergylists.org</a> [mailto:<a target="_blank" href="mailto:gasification-bounces@lists.bioenergylists.org">gasification-bou<wbr>nces@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 target="_blank" href="mailto:gasification@lists.bioenergylists.org">gasification@lists.bioenergylists.org</a><br><strong>Subject:</strong> Re: [Gasification] Low Pressure sensors</span></p></div></div><p class="ecxMsoNormal"> </p>Hi Pete,<br>We use arduino microcontrollers for our gasifiers.<br>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.<br>I believe Allpowerlabs also use similar transducers (atleast look the same)<br><br>Regards<br> <br><br>Shivanand Ramachandran<br><span>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><br> <br><br>On 26-04-2012, Pete & Sheri wrote:<br><p class="ecxMsoNormal"> </p><div><p class="ecxMsoNormal"> </p></div><blockquote style="border-width: medium medium medium 1.5pt; border-style: none none none solid; border-color: currentColor currentColor currentColor rgb(16, 16, 255); padding: 0in 0in 0in 4pt; margin-bottom: 5pt; margin-left: 3.75pt;"><div><p class="ecxMsoNormal"><span style="color: rgb(31, 73, 125); font-size: 11pt;">Hello Stephen.</span></p><p class="ecxMsoNormal"><span style="color: rgb(31, 73, 125); font-size: 11pt;"> </span></p><p class="ecxMsoNormal"><span style="color: rgb(31, 73, 125); font-size: 11pt;"> The link you supplied to Dwyer was for a Switch, not a sensor. I didn’t make myself clear.</span></p><p class="ecxMsoNormal"><span style="color: rgb(31, 73, 125); font-size: 11pt;">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="ecxMsoNormal"><span style="color: rgb(31, 73, 125); font-size: 11pt;"> </span></p><p class="ecxMsoNormal"><span style="color: rgb(31, 73, 125); font-size: 11pt;">Sorry for my poor quality communication,</span></p><p class="ecxMsoNormal"><span style="color: rgb(31, 73, 125); font-size: 11pt;">Pete Stanaitis</span></p><p class="ecxMsoNormal"><span style="color: rgb(31, 73, 125); font-size: 11pt;">---------------</span></p><p class="ecxMsoNormal"><span style="color: rgb(31, 73, 125); font-size: 11pt;"> </span></p><div style="border-width: 1pt medium medium; border-style: solid none none; border-color: rgb(181, 196, 223) currentColor currentColor; padding: 3pt 0in 0in;"><p class="ecxMsoNormal"><strong><span style="font-size: 10pt;">From:</span></strong><span style="font-size: 10pt;"> <a target="_blank" href="mailto:gasification-bounces@lists.bioenergylists.org">gasification-bou<wbr>nces@lists.bioenergylists.org</a> [<a target="_blank" href="mailto:gasification-bounces@lists.bioenergylists.org">mailto:gasificat<wbr>ion-bounces@lists.bioenergylists.org</a>] <strong>On Behalf Of </strong><a target="_blank" href="mailto:sabbadess@aol.com">sabbadess@aol.com</a><br><strong>Sent:</strong> Wednesday, April 25, 2012 2:18 PM<br><strong>To:</strong> <a target="_blank" href="mailto:gasification@lists.bioenergylists.org">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></div><p class="ecxMsoNormal"> </p><div><p class="ecxMsoNormal"><span style="font-size: 10pt;">Pete,</span></p></div><div><p class="ecxMsoNormal"><span style="font-size: 10pt;"> </span></p></div><div><p class="ecxMsoNormal"><span style="font-size: 10pt;">Try this:</span></p></div><div><p class="ecxMsoNormal"><span style="font-size: 10pt;"> </span></p></div><div><p class="ecxMsoNormal"><span style="font-size: 10pt;"><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=130746<wbr>1896&cagpspn=pla</span></a></span></p></div><div><p class="ecxMsoNormal"><span style="font-size: 10pt;"> </span></p></div><div><p class="ecxMsoNormal"><span style="font-size: 10pt;">At least it will give you a digital threshold. I have had good luck with Dwyer stuff.</span></p></div><div><p class="ecxMsoNormal"><span style="font-size: 10pt;"> </span></p></div><div><p class="ecxMsoNormal"><span style="font-size: 10pt;">Stephen Abbadessa</span></p></div><div><p style="margin-bottom: 12pt;" class="ecxMsoNormal"><span style="font-size: 10pt;">-----Original Message-----<br>From: Pete & Sheri <<a target="_blank" href="mailto:spaco@baldwin-telecom.net"><span style="color: windowtext;">spaco@baldwin-telecom.net</span></a>><br>To: Gasification <<a target="_blank" href="mailto:Gasification@bioenergylists.org"><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><div><div><div><p class="ecxMsoNormal"><span style="font-size: 10pt;">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></div><div><p class="ecxMsoNormal"><span style="font-size: 10pt;"> The reason for this post:</span></p></div><div><p class="ecxMsoNormal"><span style="font-size: 10pt;"> Is anyone else out there using the Arduino as a process controller?</span></p></div><div><p class="ecxMsoNormal"><span style="font-size: 10pt;">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></div><div><p class="ecxMsoNormal"><span style="font-size: 10pt;"> </span></p></div><div><p class="ecxMsoNormal"><span style="font-size: 10pt;">If you don’t know what I am talking about, go to:</span></p></div><div><p class="ecxMsoNormal"><span style="font-size: 10pt;"> </span></p></div><div><p class="ecxMsoNormal"><span style="font-size: 10pt;"><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></div><div><p class="ecxMsoNormal"><span style="font-size: 10pt;">(If I was a little farther along, I’d just buy one)</span></p></div><div><p class="ecxMsoNormal"><span style="font-size: 10pt;"> </span></p></div><div><p class="ecxMsoNormal"><span style="font-size: 10pt;">and then go to:</span></p></div><div><p class="ecxMsoNormal"><span style="font-size: 10pt;"> </span></p></div><div><p class="ecxMsoNormal"><span style="font-size: 10pt;"><a href="http://www.arduino.cc/" target="_blank">http://www.arduino.cc/</a></span></p></div><div><p class="ecxMsoNormal"><span style="font-size: 10pt;"> </span></p></div><div><p class="ecxMsoNormal"><span style="font-size: 10pt;">A whole ‘nother world!!!</span></p></div><div><p class="ecxMsoNormal"><span style="font-size: 10pt;"> </span></p></div><div><p class="ecxMsoNormal"><span style="font-size: 10pt;">Pete Stanaitis</span></p></div><div><p class="ecxMsoNormal"><span style="font-size: 10pt;">---------------- </span></p></div></div></div><div><pre style="background: white;"><tt><span>_______________________________________________</span></tt></pre><pre style="background: white;"><tt><span>Gasification mailing list</span></tt></pre><pre style="background: white;"><tt><span> </span></tt></pre><pre style="background: white;"><tt><span>to Send a Message to the list, use the email address</span></tt></pre><pre style="background: white;"><tt><span><a target="_blank" href="mailto:Gasification@bioenergylists.org">Gasification@bioenergylists.org</a></span></tt></pre><pre style="background: white;"><tt><span> </span></tt></pre><pre style="background: white;"><tt><span>to UNSUBSCRIBE or Change your List Settings use the web page</span></tt></pre><pre style="background: white;"><tt><span><a href="http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org" target="_blank">http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org</a></span></tt></pre><pre style="background: white;"><tt><span> </span></tt></pre><pre style="background: white;"><tt><span>for more Gasifiers, News and Information see our web site:</span></tt></pre><pre style="background: white;"><tt><span><a href="http://gasifiers.bioenergylists.org/" target="_blank">http://gasifiers.bioenergylists.org/</a></span></tt></pre></div></div></div></blockquote></div></blockquote></div></div></div><br>_______________________________________________<br>Gasification mailing list<br><br>to Send a Message to the list, use the email address<br><a target="_blank" href="mailto:Gasification@bioenergylists.org">Gasification@bioenergylists.org</a><br><br>to UNSUBSCRIBE or Change your List Settings use the web page<br><a href="http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org" target="_blank">http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org</a><br><br>for more Gasifiers, News and Information see our web site:<br><a href="http://gasifiers.bioenergylists.org/" target="_blank">http://gasifiers.bioenergylists.org/</a><br><br></blockquote></div><br></div><br>_______________________________________________ Gasification mailing list to Send a Message to the list, use the email address Gasification@bioenergylists.org to UNSUBSCRIBE or Change your List Settings use the web page <a target="_blank" href="http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org">http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org</a> for more Gasifiers, News and Information see our web site: <a target="_blank" href="http://gasifiers.bioenergylists.org/">http://gasifiers.bioenergylists.org/</a></div> </div></div></blockquote><br></div>
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