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
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| Subject: | FlowScan Problems |
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
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| Subject: | Re: 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
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| Subject: | Re: 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
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| Subject: | Re: 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 <frans@privatepilots.nl>=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 <frans@privatepilots.nl>=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
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| Subject: | 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 <frans@privatepilots.nl>
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"
======
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