Today's Message Index:
----------------------
1. 12:12 PM - Thermocouple construction (Paul Eckenroth)
2. 01:33 PM - Re: Thermocouple construction (Kent or Jackie Ashton)
3. 03:05 PM - Re: Thermocouple construction (Charlie England)
Message 1
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| Subject: | Thermocouple construction |
I need to create CHT thermocouples for use in a VW engine. The engine has small
diameter holes drilled in the head with a set screw perpendicular to secure
the thermocouple. The drilled hole is just large enough to allow a dsub male
pin to be inserted. Since I already have old CHT probes as used on a Lycoming,
my plan is to cut off the existing too large probe and insert the two stripped
wires into the dsub, crimp, and insert into the hole and secure with the set
screw. Since I am not an expert on thermocouples, I would like to know if this
is a valid approach. Is the crimp enough to form the thermocouple. Should
solder be used, etc. All information will be appreciated. Thanks.
Paul
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=460375#460375
Message 2
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| Subject: | Re: Thermocouple construction |
Its only required that you twist the wires together and they make good contact
with the engine but silver-solder will make them a little more robust. I made
a little writeup here on how to make them for a Lycoming
http://www.canardzone.com/forum/topic/31152-homemade-cht-bayonet-sensor/#entry58923
-Kent
> On Sep 9, 2016, at 3:06 PM, Paul Eckenroth <jeckenroth@nbn.net> wrote:
>
>
> I need to create CHT thermocouples for use in a VW engine. The engine has small
diameter holes drilled in the head with a set screw perpendicular to secure
the thermocouple. The drilled hole is just large enough to allow a dsub male
pin to be inserted. Since I already have old CHT probes as used on a Lycoming,
my plan is to cut off the existing too large probe and insert the two stripped
wires into the dsub, crimp, and insert into the hole and secure with the
set screw. Since I am not an expert on thermocouples, I would like to know if
this is a valid approach. Is the crimp enough to form the thermocouple. Should
solder be used, etc. All information will be appreciated. Thanks.
>
> Paul
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=460375#460375
>
>
>
>
>
>
>
>
>
>
Message 3
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| Subject: | Re: Thermocouple construction |
You do need to pay attention to whether your gauge/monitor expects grounded
or ungrounded probes. (Some may allow you to select which you're using, but
some don't.)
Charlie
On Fri, Sep 9, 2016 at 3:27 PM, Kent or Jackie Ashton <kjashton@vnet.net>
wrote:
> kjashton@vnet.net>
>
> It=99s only required that you twist the wires together and they mak
e good
> contact with the engine but silver-solder will make them a little more
> robust. I made a little writeup here on how to make them for a Lycoming
> http://www.canardzone.com/forum/topic/31152-homemade-
> cht-bayonet-sensor/#entry58923
>
> -Kent
> > On Sep 9, 2016, at 3:06 PM, Paul Eckenroth <jeckenroth@nbn.net> wrote:
> >
> jeckenroth@nbn.net>
> >
> > I need to create CHT thermocouples for use in a VW engine. The engine
> has small diameter holes drilled in the head with a set screw perpendicul
ar
> to secure the thermocouple. The drilled hole is just large enough to all
ow
> a dsub male pin to be inserted. Since I already have old CHT probes as
> used on a Lycoming, my plan is to cut off the existing too large probe an
d
> insert the two stripped wires into the dsub, crimp, and insert into the
> hole and secure with the set screw. Since I am not an expert on
> thermocouples, I would like to know if this is a valid approach. Is the
> crimp enough to form the thermocouple. Should solder be used, etc. All
> information will be appreciated. Thanks.
> >
> > Paul
> >
> >
> >
> >
> > Read this topic online here:
> >
> > http://forums.matronics.com/viewtopic.php?p=460375#460375
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
>
>
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