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Sorry for the late reply =E2=80=93 I have no idea where several =
weeks=E2=80=99 worth of messages have been hanging out!
=20
It might be worth checking with someone who already has their gauges =
calibrated and comparing readings. I would hope the new car dealers =
service department would actually calibrate gauges used on customer =
cars, but would ask to be sure. It also occurs to me that last time I =
moved the movers damaged my air compressor, and the insurance company =
has a local company that repairs them. I wonder if they have calibrated =
gauges, and if one could compare readings with theirs=E2=80=A6
=20
-----------------------------------
All the best,
=20
Al Fuller
=20
From: Shop-talk <shop-talk-bounces@autox.team.net> On Behalf Of Jeff =
Scarbrough
Sent: Sunday, April 7, 2024 1:13 PM
To: Benjamin Zwissler <bjzwissler@gmail.com>
Cc: Shop-talk@autox.team.net
Subject: Re: [Shop-talk] Tire Gauges
=20
I know that one foot of water column equals 0.433 psi. So about 70 feet =
of 2" pipe attached to the side of a tall building with a thin diaphragm =
over a chamber with a Schrader valve should get you close. Might need =
to make a manometer out of it, so you'll need more pipe.
=20
It's low cost, but not very practical. I did have a set of weights and =
an oil reservoir for calibrating liquid pressure, but liquids are not =
(for our purposes) compressible and air is. So I don't know how =
accurate that might be.
=20
If you had some mercury, a 5 foot column should do the trick. Don't =
tell the EPD, though.
=20
=20
On Sun, Apr 7, 2024, 15:37 Benjamin Zwissler <bjzwissler@gmail.com =
I calibrate my Milton (which has consistently read high) to my wife's =
tpms value. Partly because I assume the car is right and partly =
because I don't like it when she's telling me a week later that she's =
getting low pressure lights again.=20
=20
I don't know how to create an inexpensive standard for calibration. =
The Milton is the most expensive gauge I have and has been the least =
accurate. I looked it up on line and found lots of similar complaints =
about its inaccuracy.=20
=20
Any ideas on creating a low cost pressure standard for calibration?
=20
Ben=20
=20
=20
=20
On Sun, Apr 7, 2024, 1:49=E2=80=AFPM Jeff Scarbrough =
So, I have three tire gauges: Accutire electronic, Jayco mechanical, =
and Milton Inflator hose with gauge. All three report consistently, and =
all three are 3-4 psi different - low to high in the above order.
Is there a simple way to check accuracy? =20
=20
Jeff=20
Corrosion Acres, Ga.
_______________________________________________
Archive: http://www.team.net/pipermail/shop-talk =
http://autox.team.net/archive
http://autox.team.net/mailman/options/shop-talk/bjzwissler@gmail.com
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vlink=3Dpurple style=3D'word-wrap:break-word'><div =
class=3DWordSection1><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt'>Sorry for the late reply =E2=80=93 I have no =
idea where several weeks=E2=80=99 worth of messages have been hanging =
out!<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt'><o:p> </o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-size:11.0pt'>It might be worth =
checking with someone who already has their gauges calibrated and =
comparing readings. I would hope the new car dealers service department =
would actually calibrate gauges used on customer cars, but would ask to =
be sure. It also occurs to me that last time I moved the movers damaged =
my air compressor, and the insurance company has a local company that =
repairs them. I wonder if they have calibrated gauges, and if one could =
compare readings with theirs=E2=80=A6<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt'><o:p> </o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>-------------=
----------------------<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>All the =
best,<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'><o:p> </=
o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>Al =
Fuller<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt'><o:p> </o:p></span></p><div =
style=3D'border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in =
0in 0in'><p class=3DMsoNormal><b><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>From:</span><=
/b><span style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'> =
Shop-talk <shop-talk-bounces@autox.team.net> <b>On Behalf Of =
</b>Jeff Scarbrough<br><b>Sent:</b> Sunday, April 7, 2024 1:13 =
PM<br><b>To:</b> Benjamin Zwissler =
<bjzwissler@gmail.com><br><b>Cc:</b> =
Shop-talk@autox.team.net<br><b>Subject:</b> Re: [Shop-talk] Tire =
Gauges<o:p></o:p></span></p></div><p =
class=3DMsoNormal><o:p> </o:p></p><div><p class=3DMsoNormal>I know =
that one foot of water column equals 0.433 psi. So about 70 feet =
of 2" pipe attached to the side of a tall building with a thin =
diaphragm over a chamber with a Schrader valve should get you =
close. Might need to make a manometer out of it, so you'll need =
more pipe.<o:p></o:p></p><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal>It's low cost, but not very practical. I =
did have a set of weights and an oil reservoir for calibrating liquid =
pressure, but liquids are not (for our purposes) compressible and air =
is. So I don't know how accurate that might =
be.<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal>If you had some mercury, a 5 foot column should do the =
trick. Don't tell the EPD, though.<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><p class=3DMsoNormal =
style=3D'margin-bottom:12.0pt'><o:p> </o:p></p><div><div><p =
class=3DMsoNormal>On Sun, Apr 7, 2024, 15:37 Benjamin Zwissler <<a =
href=3D"mailto:bjzwissler@gmail.com";>bjzwissler@gmail.com</a>> =
wrote:<o:p></o:p></p></div><blockquote =
style=3D'border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in =
6.0pt;margin-left:4.8pt;margin-right:0in'><div><div><p =
class=3DMsoNormal>I calibrate my Milton (which has consistently read =
high) to my wife's tpms value. Partly because I assume the =
car is right and partly because I don't like it when she's telling me a =
week later that she's getting low pressure lights =
again. <o:p></o:p></p><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p class=3DMsoNormal>I =
don't know how to create an inexpensive standard for calibration. =
The Milton is the most expensive gauge I have and has been the =
least accurate. I looked it up on line and found lots of similar =
complaints about its inaccuracy. <o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal>Any ideas on creating a low cost pressure standard for =
calibration?<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal>Ben <o:p></o:p></p><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div></div><p class=3DMsoNormal =
style=3D'margin-bottom:12.0pt'><o:p> </o:p></p><div><div><p =
class=3DMsoNormal>On Sun, Apr 7, 2024, 1:49<span =
style=3D'font-family:"Arial",sans-serif'>=E2=80=AF</span>PM Jeff =
Scarbrough <<a href=3D"mailto:fishplate@gmail.com"; =
target=3D"_blank">fishplate@gmail.com</a>> =
wrote:<o:p></o:p></p></div><blockquote =
style=3D'border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in =
6.0pt;margin-left:4.8pt;margin-right:0in'><div><p class=3DMsoNormal>So, =
I have three tire gauges: Accutire electronic, Jayco mechanical, =
and Milton Inflator hose with gauge. All three report =
consistently, and all three are 3-4 psi different - low to high in =
the above order.<br><br>Is there a simple way to check =
accuracy? <o:p></o:p></p><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal> Jeff <o:p></o:p></p><div><p =
class=3DMsoNormal> Corrosion Acres, =
Ga.<o:p></o:p></p></div></div></div><p class=3DMsoNormal =
style=3D'margin-bottom:12.0pt'>__________________________________________=
_____<br><br><a href=3D"mailto:Shop-talk@autox.team.net"; =
target=3D"_blank">Shop-talk@autox.team.net</a><br>Donate: <a =
href=3D"http://www.team.net/donate.html"; =
target=3D"_blank">http://www.team.net/donate.html</a><br>Suggested =
annual donation $12.96<br>Archive: <a =
href=3D"http://www.team.net/pipermail/shop-talk"; =
target=3D"_blank">http://www.team.net/pipermail/shop-talk</a> <a =
href=3D"http://autox.team.net/archive"; =
target=3D"_blank">http://autox.team.net/archive</a><br><br>Unsubscribe/Ma=
nage: <a =
href=3D"http://autox.team.net/mailman/options/shop-talk/bjzwissler@gmail.=
com" =
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ler@gmail.com</a><o:p></o:p></p></blockquote></div></div></div></blockquo=
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Shop-talk@autox.team.net
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