Emmet Posted December 7, 2014 Report Posted December 7, 2014 Hi, I am int he process of installing a EDM900 in my 231. As the shunt is a pita to access I try to find out whether the shunt is a 50mV or 100mV type. Does anybody know which one it is? Thank you very much in advance! Quote
carusoam Posted December 7, 2014 Report Posted December 7, 2014 Emmet, It may be helpful to let us know which year your A/F is... Or did I miss that? Best regards, -a- Quote
N601RX Posted December 7, 2014 Report Posted December 7, 2014 The older F's used a 60mv shunt, so I had to use the one supplied with the 900. You should be able to turn on a couple of higher current devices like pitot heat and landing light and measure the voltage across the shunt. From that it will be easy to tell if it is a 50 or 100mv shunt. Quote
N201MKTurbo Posted December 7, 2014 Report Posted December 7, 2014 It is a JANCO 8406-70 All the 8406 line of shunts seem to be 100mv I could not find a datasheet on line The alternate is a EMPRO MLA-70-100MV This is a 100MV shunt Quote
Emmet Posted December 7, 2014 Author Report Posted December 7, 2014 The maintenance manual says it' s a MS91586-1. I found a webpage from Deltec. They offer it in 50 and 100mV... The airframe is from 1980 - sorry, should have mentioned it. The panel is already disassembled - so no chance to power it up :-( Quote
N201MKTurbo Posted December 7, 2014 Report Posted December 7, 2014 I think you are looking at the hot prop ammeter shunt. Could be wrong, I'm not by my manuals right now. Quote
carusoam Posted December 7, 2014 Report Posted December 7, 2014 From the only parts book I have that may be similar, use for ideas... The 67E.... Probably 12V and 60 amp system...??? Figure 50-H shows the shunt... Part number... 22-370-60 No more detail than that.... The wiring drawing shows a square... Trying to be helpful with what I have.... Best regards, -a- See this resource...http://www.sigmatek.com/pages/prod_description/PD_ACC_shunt.html From this resource you can discern that the -60 is a 50mV device... Searching on your part number, I found this... MKA-30-50 MSA300 MS91586-1 30 From this site... http://www.deltecco.com/MKA-DC.html The -50 for the alt part number indicates 50mV Share this with your mechanic, I am just guessing out loud.... Quote
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