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Mon, 30 Aug 2004 10:39:34 -0400
From: "Al Gietzen" <ALVentures@cox.net>
To: "'Rotary motors in aircraft'" <flyrotary@lancaironline.net>
Subject: O2 sensor
Date: Mon, 30 Aug 2004 07:39:49 -0700
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=20
Tried to check the O2 sensor output using a flame from a propane torch.
Nothing. I'll probably try again to get a voltage reading at the sensor
when I can run again. It still gives close to full scale reading no =
matter
what mixture setting.
Oops. Still getting to know the EM2 display. I guess I was looking at =
the
fuel pressure bar thinking it was the mixture bar; which means I was =
getting
no (zero) reading on the mixture because there was no bar there. At =
least
that's consistent with the reading I got on the voltmeter.
=20
Al,
It takes a while for the O2 sensor to put out a reliable reading. I =
don't
get a stable reading on mine until about 1-1/2 to 2 minutes. You will
probably get some sort of reading after a few seconds, but I wouldn't =
put
much faith in its' accuracy. Mine shows a very, very lean mixture while
warming up.
=20
Regards,
Steve
=20
I'm using a heated sensor which should give readings very quickly. I =
have
relocated the O2 bung, and have a Bosch 11027 unheated sensor (Thanks =
Dave)
to give that a try when I get up and running again.
=20
Al
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<div class=3DSection1>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D3 =
face=3D"Times New Roman"><span
style=3D'font-size:12.0pt'> </span></font></p>
<p class=3DMsoNormal style=3D'margin-left:1.25in'><font size=3D2 =
color=3Dblack
face=3DVerdana><span =
style=3D'font-size:11.0pt;font-family:Verdana;color:black'>Tried
to check the O2 sensor output using a flame from a propane torch.
Nothing. I’ll probably try again to get a voltage reading at =
the
sensor when I can run again. It still gives close to full scale =
reading
no matter what mixture setting.</span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dblue face=3DVerdana><span =
style=3D'font-size:
11.0pt;font-family:Verdana;color:blue'>Oops. Still getting to know =
the EM2
display. I guess I was looking at the fuel pressure bar thinking =
it was
the mixture bar; which means I was getting no (zero) reading on the =
mixture
because there was no bar there. At least that’s consistent =
with the
reading I got on the voltmeter.</span></font></p>
<p class=3DMsoNormal style=3D'margin-left:1.25in'><font size=3D2 =
face=3DVerdana><span
style=3D'font-size:11.0pt;font-family:Verdana'> </span></font></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><span =
class=3DEmailStyle19><font
size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:10.0pt'>Al,</span></font></span></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><span =
class=3DEmailStyle19><font
size=3D2 color=3Dnavy face=3DArial><span style=3D'font-size:10.0pt'>It =
takes a while
for the O2 sensor to put out a reliable reading. I don’t get =
a
stable reading on mine until about 1-1/2 to 2 minutes. You will =
probably
get some sort of reading after a few seconds, but I wouldn’t put =
much
faith in its’ accuracy. Mine shows a very, very lean mixture =
while
warming up.</span></font></span></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><span =
class=3DEmailStyle19><font
size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:10.0pt'> </span></font></span></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><span =
class=3DEmailStyle19><font
size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:10.0pt'>Regards,</span></font></span></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><span =
class=3DEmailStyle19><font
size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:10.0pt'>Steve</span></font></span></p>
<p class=3DMsoNormal style=3D'margin-left:1.25in'><font size=3D2 =
color=3Dblack
face=3DVerdana><span =
style=3D'font-size:11.0pt;font-family:Verdana;color:black'> </span><=
/font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dblue face=3DVerdana><span =
style=3D'font-size:
11.0pt;font-family:Verdana;color:blue'>I’m using a heated sensor =
which
should give readings very quickly. I have relocated the O2 bung, =
and have
a Bosch 11027 unheated sensor (Thanks Dave) to give that a try when I =
get up
and running again.</span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dblue face=3DVerdana><span =
style=3D'font-size:
11.0pt;font-family:Verdana;color:blue'> </span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dblue face=3DVerdana><span =
style=3D'font-size:
11.0pt;font-family:Verdana;color:blue'>Al</span></font></p>
</div>
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