---------------------------------------------------------- Zenith-List Digest Archive --- Total Messages Posted Sun 09/20/09: 6 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 11:51 AM - Extra insulation (Bill Naumuk) 2. 03:56 PM - 601HDS - VDO Senders in LE Tanks (checking Ohm) (Hodges, Mitch) 3. 04:24 PM - Re: 601HDS - VDO Senders in LE Tanks (checking Ohm) (Jim Belcher) 4. 05:49 PM - Re: 601HDS - VDO Senders in LE Tanks (checking Ohm) (Hodges, Mitch) 5. 07:37 PM - Re: Extra insulation (Elden Jacobson) 6. 08:08 PM - Re: 601HDS - VDO Senders in LE Tanks (checking Ohm) (Gary Ray) ________________________________ Message 1 _____________________________________ Time: 11:51:45 AM PST US From: "Bill Naumuk" Subject: Zenith-List: Extra insulation All- Wound up with enough extra 1/2" insulation to do both sides of a firewall. 3.5' x4.5', Wicks #SP-500, will take $20 + shipping. Look it up. Originally came unfolded in a 5' tall box. if you don't mind folding it we can ship USPS for 1/2 the cost. If not, I have the original box. Take it from me- folding is no big deal. Bill Naumuk Townville, Pa. HDS N601MG/Corvair 95% ________________________________ Message 2 _____________________________________ Time: 03:56:26 PM PST US From: "Hodges, Mitch" Subject: Zenith-List: 601HDS - VDO Senders in LE Tanks (checking Ohm) Just getting ready to put the sender in the LE tank on the left wing of my HDS. Following the instructions, I've done the bend, etc. Now I'm trying to test the sender's Ohm readings. Unfortunately, what I get are readings that bounces all over the place and never settles down anywhere close. Now, being somewhat less than a daily user of a multimeter (I think I've used one once before, and not sure I was successful then) it is very possible its user error, so I thought maybe someone could verify I'm doing this correctly. I have an ACTRON CP7672 multimeter http://www.actron.com/publish/2004/06/07/pdf_english_16157.pdf. It is set to to 2000 on the Ohm/Resistance scale), although I've tried the others. The Red lead is plugged into the V(OHm)A plug, and the black lead is plugged into the COM plug. I touch both leads to the terminal on the sender, but not to each other. At both the Full and Empty settings, I get just a wide swing in but no reading close to what it should be (although they do pop up in the seemingly random numbers generated). So, bad sender, bad method or bad user? Thanks, Mitch Hodges N601MH - Wings under Perpetual Construction http://www.hodges.aero ________________________________ Message 3 _____________________________________ Time: 04:24:49 PM PST US From: Jim Belcher Subject: Re: Zenith-List: 601HDS - VDO Senders in LE Tanks (checking Ohm) On Sunday 20 September 2009 17:55, Hodges, Mitch wrote: > Just getting ready to put the sender in the LE tank on the left wing of my > HDS. Following the instructions, I've done the bend, etc. Now I'm trying > to test the sender's Ohm readings. Unfortunately, what I get are readings > that bounces all over the place and never settles down anywhere close. Which suggests either a faulty sender or a faulty measurement. Don't trust touching the leads to the terminals. Get some clip leads, with alligator clips on the ends. Clip one end to a terminal, and the other to the multimeter for each lead. If it still bounces around, you probably have a bad sender. If not, trying moving the float up and down. The resistance should change, without wild fluctuations. You can also try connecting the two multimeter leads together, and see if you get a zero reading. Assuming your VDO sender is similar to the one used in the XL, 2000 is much too high a setting. It seems to me the XL senders are in the neighborhood of 70 ohms. A setting of 100 or 200 ophms would be closer to the ballpark. -- ============================================ Do not archive. ============================================ Jim B Belcher BS, MS Physics, Math, Computer Science A&P/IA Retired aerospace technical manager Happiness is a belt-fed weapon ============================================ ________________________________ Message 4 _____________________________________ Time: 05:49:42 PM PST US From: "Hodges, Mitch" Subject: RE: Zenith-List: 601HDS - VDO Senders in LE Tanks (checking Ohm) Thanks Jim, I'll try the alligator clips, that may do it. Also, I meant 200, not 2000 on the setting. I do notice that even when I just touch the probs together I'm getting some fluctuation. I'm going to take it into work tomorrow to have someone with more experience than me try it. Mitch -----Original Message----- From: owner-zenith-list-server@matronics.com [mailto:owner-zenith-list-server@matronics.com] On Behalf Of Jim Belcher Sent: Sunday, September 20, 2009 7:26 PM Subject: Re: Zenith-List: 601HDS - VDO Senders in LE Tanks (checking Ohm) --> On Sunday 20 September 2009 17:55, Hodges, Mitch wrote: > Just getting ready to put the sender in the LE tank on the left wing > of my HDS. Following the instructions, I've done the bend, etc. Now > I'm trying to test the sender's Ohm readings. Unfortunately, what I > get are readings that bounces all over the place and never settles down anywhere close. Which suggests either a faulty sender or a faulty measurement. Don't trust touching the leads to the terminals. Get some clip leads, with alligator clips on the ends. Clip one end to a terminal, and the other to the multimeter for each lead. If it still bounces around, you probably have a bad sender. If not, trying moving the float up and down. The resistance should change, without wild fluctuations. You can also try connecting the two multimeter leads together, and see if you get a zero reading. Assuming your VDO sender is similar to the one used in the XL, 2000 is much too high a setting. It seems to me the XL senders are in the neighborhood of 70 ohms. A setting of 100 or 200 ophms would be closer to the ballpark. -- ============================================ Do not archive. ============================================ Jim B Belcher BS, MS Physics, Math, Computer Science A&P/IA Retired aerospace technical manager Happiness is a belt-fed weapon ============================================ ________________________________ Message 5 _____________________________________ Time: 07:37:34 PM PST US From: Elden Jacobson Subject: Re: Zenith-List: Extra insulation If it's not already gone, Bill, I'd like to have it. - Elden Jacobson --- On Mon, 9/21/09, Bill Naumuk wrote: From: Bill Naumuk Subject: Zenith-List: Extra insulation All- --- Wound up with enough extra 1/2" insulation to do both sides of a firewall. 3.5' x4.5', Wicks #SP-500, will take $20 + shipping. Look it up. --- -Originally came unfolded in a 5' tall box. if you don't mind f olding it we can ship USPS for 1/2 the cost. If not, I have the original bo x. Take it from me- folding is no big deal. - Bill Naumuk Townville, Pa. HDS N601MG/Corvair 95% =0A=0A=0A ________________________________ Message 6 _____________________________________ Time: 08:08:46 PM PST US From: "Gary Ray" Subject: Re: Zenith-List: 601HDS - VDO Senders in LE Tanks (checking Ohm) Mitch For practice and checking the function of your meter, try measuring several resistors with a known value. The meter should read very close without fluctuations. If you get the expected value with fluctuation higher you probably have a loose wire connection in one of your test leads. The VDO senders should read between 10 and 180 ohms(Empty-Full). Also, Practice voltage readings on batteries etc. to gain experience. One more point for later, a broken wire or corroded connection from the VDO sender to the instrument panel fuel gauge will be a higher resistance than 180 ohms which causes the fuel gauge to show a very full tank indication when you actually have much less fuel in the tank. Ten ohms is an empty tank, 180 ohms is a full tank, and anything causing resistance above 180 ohms will show a very full tank. For this reason be sure to visually check your tanks before flight and observe that the gauges are in agreement with the visual. Gary Ray davgray@sbcglobal.net ----- Original Message ----- From: Hodges, Mitch To: zenith-list@matronics.com Sent: Sunday, September 20, 2009 6:55 PM Subject: Zenith-List: 601HDS - VDO Senders in LE Tanks (checking Ohm) Just getting ready to put the sender in the LE tank on the left wing of my HDS. Following the instructions, I've done the bend, etc. Now I'm trying to test the sender's Ohm readings. Unfortunately, what I get are readings that bounces all over the place and never settles down anywhere close. Now, being somewhat less than a daily user of a multimeter (I think I've used one once before, and not sure I was successful then) it is very possible its user error, so I thought maybe someone could verify I'm doing this correctly. I have an ACTRON CP7672 multimeter http://www.actron.com/publish/2004/06/07/pdf_english_16157.pdf. It is set to to 2000 on the Ohm/Resistance scale), although I've tried the others. The Red lead is plugged into the V(OHm)A plug, and the black lead is plugged into the COM plug. I touch both leads to the terminal on the sender, but not to each other. At both the Full and Empty settings, I get just a wide swing in but no reading close to what it should be (although they do pop up in the seemingly random numbers generated). So, bad sender, bad method or bad user? Thanks, Mitch Hodges N601MH - Wings under Perpetual Construction http://www.hodges.aero ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message zenith-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Zenith-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/zenith-list Browse Digests http://www.matronics.com/digest/zenith-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.