---------------------------------------------------------- Europa-List Digest Archive --- Total Messages Posted Sat 08/06/11: 5 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 03:02 AM - FlowScan Problems (John Greenhalgh) 2. 08:50 AM - Re: FlowScan Problems (Frans Veldman) 3. 11:13 AM - Re: FlowScan Problems (Jan de Jong) 4. 03:15 PM - Re: FlowScan Problems (GRAHAM SINGLETON) 5. 05:35 PM - Re: FlowScan Problems (Karl Heindl) ________________________________ Message 1 _____________________________________ Time: 03:02:56 AM PST US Subject: Europa-List: FlowScan Problems From: John Greenhalgh I'm still in the process of inital flight testing and now finding the Flowscan always reads 0.0 on my Grand Rapids EIS. All the connections appear correct (previous project builder). Just wondering if anyone could suggest a way forward. I have checked the ground and thats OK and then I checked the voltage of the power source at the connector to the sensor between the red and black wires and this was 10.6 volts which is a surprise as the power cable is connected to the regulated 12 volt supply direct from the EIS. This may or may not be the probem but I'm now in the dark with solving this puzzle. Is there any way to check the output from the Flowscan white sensor wire? I would welcome any suggestions. Regards John ________________________________ Message 2 _____________________________________ Time: 08:50:58 AM PST US From: Frans Veldman Subject: Re: Europa-List: FlowScan Problems On 08/06/2011 11:59 AM, John Greenhalgh wrote: > I have checked the ground and thats OK and then I checked the voltage > of the power source at the connector to the sensor between the red and > black wires and this was 10.6 volts which is a surprise If I recall correctly this sensor needs 5 Volts. If that is the case it is not surprising that it drags the supply down to 10.6Volts. You might have damaged the flowscan, but check to be sure what the required voltage is, I hope for you that my memory is wrong. Frans ________________________________ Message 3 _____________________________________ Time: 11:13:32 AM PST US From: Jan de Jong Subject: Re: Europa-List: FlowScan Problems > On 08/06/2011 11:59 AM, John Greenhalgh wrote: > >> I have checked the ground and thats OK and then I checked the voltage >> of the power source at the connector to the sensor between the red and >> black wires and this was 10.6 volts which is a surprise >> > > If I recall correctly this sensor needs 5 Volts. If that is the case it > is not surprising that it drags the supply down to 10.6Volts. You might > have damaged the flowscan, but check to be sure what the required > voltage is, I hope for you that my memory is wrong. > > Frans > > At http://www.floscan.com/html/blue/aviation.php Floscan says: * Electrical Specifications:* 12 to 15 VDC between RED (+) wire and BLACK (-) wire. 30 to 50 mA at 12 VDC. *Signal Specifications:* Open collector transistor output on WHITE wire. Sensor will pull-down to 1.0 volt with 10-15K ohm pull-up resistor installed. Jan de Jong ________________________________ Message 4 _____________________________________ Time: 03:15:35 PM PST US From: GRAHAM SINGLETON Subject: Re: Europa-List: FlowScan Problems John=0Athere is also a regulated 5v supply from the EIS I forgot which pin it is but I =0Acan find out iof you need it=0AGraham=0A=0A=0A=0A=0A________ ________________________=0AFrom: Frans Veldman =0AT o: europa-list@matronics.com=0ASent: Saturday, 6 August, 2011 16:47:44=0ASu bject: Re: Europa-List: FlowScan Problems=0A=0A--> Europa-List message post ed by: Frans Veldman =0A=0AOn 08/06/2011 11:59 AM, John Greenhalgh wrote:=0A> I have checked the ground and thats OK and then I checked the voltage=0A> of the power source at the connector to the senso r between the red and=0A> black wires and this was 10.6 volts which is a su rprise=0A=0AIf I recall correctly this sensor needs 5 Volts. If that is the case it=0Ais not surprising that it drags the supply down to 10.6Volts. Yo u might=0Ahave damaged the flowscan, but check to be sure what the required =0Avoltage is, I hope for you that my memory is wrong.=0A=0AFrans=0A=0A=0A_ -======================== =============== ________________________________ Message 5 _____________________________________ Time: 05:35:42 PM PST US From: Karl Heindl Subject: RE: Europa-List: FlowScan Problems On my diagram it says 4.8V on pin23. From: grahamsingleton@btinternet.com Subject: Re: Europa-List: FlowScan Problems John there is also a regulated 5v supply from the EIS I forgot which pin it is b ut I can find out iof you need it Graham From: Frans Veldman Sent: Saturday=2C 6 August=2C 2011 16:47:44 Subject: Re: Europa-List: FlowScan Problems On 08/06/2011 11:59 AM=2C John Greenhalgh wrote: > I have checked the ground and thats OK and then I checked the voltage > of the power source at the connector to the sensor between the red and > black wires and this was 10.6 volts which is a surprise If I recall correctly this sensor needs 5 Volts. If that is the case it is not surprising that it drags the supply down to 10.6Volts. You might have damaged the flowscan=2C but check to be sure what the required voltage is=2C I hope for you tSearch & Download=2C 7-Day Browse=2C Chat=2C gt=3B http://forums.matronics.com _=3B -Matt Dralcontribution" ====== ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message europa-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Europa-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/europa-list Browse Digests http://www.matronics.com/digest/europa-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.