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UK Caravanning (uk.rec.caravanning) A forum for the discussion of caravanning undertaken by residents of the United Kingdom, whether in the UK or abroad. It encourages the interchange of views on the merits of models of caravan, makes of tow car, accessories, caravan sites, caravan clubs, and other related topics. The term caravan is to include trailer vans, motor caravans and trailer tents.

Buying second hand!



 
 
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  #1 (permalink)  
Old May 31st 06, 10:26 AM posted to uk.rec.caravanning
Mary Fisher
external usenet poster
 
Posts: 3,847
Default Buying second hand!


"Harry Bloomfield" wrote in message
...

snip interesting and useful to some warning

... Take along a damp test meter - Aldi had some digital ones recently
for 10 - they just need the probes modifying to make them a little finer
at the tip.


How do you do that? Won't such modifying affect the reading in some way?

Mary


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  #2 (permalink)  
Old May 31st 06, 03:57 PM posted to uk.rec.caravanning
Harry Bloomfield
external usenet poster
 
Posts: 582
Default Buying second hand!

Mary Fisher formulated on Wednesday :
"Harry Bloomfield" wrote in message
...

snip interesting and useful to some warning

... Take along a damp test meter - Aldi had some digital ones recently for
10 - they just need the probes modifying to make them a little finer at
the tip.


How do you do that? Won't such modifying affect the reading in some way?

Mary


They simply measure the resistance or conductivity of the material they
are probing. A smaller contact area due to smaller diameter probes will
of course affect the reading, but it is only a matter of seeing if any
change in the reading is obtained on pushing the probes in - which
would indicate conduction and thus damp.

--

Regards,
Harry (M1BYT) (L)
http://www.ukradioamateur.co.uk


  #3 (permalink)  
Old May 31st 06, 03:57 PM posted to uk.rec.caravanning
Harry Bloomfield
external usenet poster
 
Posts: 582
Default Buying second hand!

Mary Fisher formulated on Wednesday :
"Harry Bloomfield" wrote in message
...

snip interesting and useful to some warning

... Take along a damp test meter - Aldi had some digital ones recently for
10 - they just need the probes modifying to make them a little finer at
the tip.


How do you do that? Won't such modifying affect the reading in some way?

Mary


They simply measure the resistance or conductivity of the material they
are probing. A smaller contact area due to smaller diameter probes will
of course affect the reading, but it is only a matter of seeing if any
change in the reading is obtained on pushing the probes in - which
would indicate conduction and thus damp.

--

Regards,
Harry (M1BYT) (L)
http://www.ukradioamateur.co.uk


  #4 (permalink)  
Old May 31st 06, 03:57 PM posted to uk.rec.caravanning
Harry Bloomfield
external usenet poster
 
Posts: 582
Default Buying second hand!

Mary Fisher formulated on Wednesday :
"Harry Bloomfield" wrote in message
...

snip interesting and useful to some warning

... Take along a damp test meter - Aldi had some digital ones recently for
10 - they just need the probes modifying to make them a little finer at
the tip.


How do you do that? Won't such modifying affect the reading in some way?

Mary


They simply measure the resistance or conductivity of the material they
are probing. A smaller contact area due to smaller diameter probes will
of course affect the reading, but it is only a matter of seeing if any
change in the reading is obtained on pushing the probes in - which
would indicate conduction and thus damp.

--

Regards,
Harry (M1BYT) (L)
http://www.ukradioamateur.co.uk


  #5 (permalink)  
Old May 31st 06, 04:03 PM posted to uk.rec.caravanning
Mary Fisher
external usenet poster
 
Posts: 3,847
Default Buying second hand!


"Harry Bloomfield" wrote in message
...
Mary Fisher formulated on Wednesday :
"Harry Bloomfield" wrote in message
...

snip interesting and useful to some warning

... Take along a damp test meter - Aldi had some digital ones recently
for 10 - they just need the probes modifying to make them a little
finer at the tip.


How do you do that? Won't such modifying affect the reading in some way?

Mary


They simply measure the resistance or conductivity of the material they
are probing. A smaller contact area due to smaller diameter probes will of
course affect the reading, but it is only a matter of seeing if any change
in the reading is obtained on pushing the probes in - which would indicate
conduction and thus damp.


Yes but do you file it down or what?

Mary

--

Regards,
Harry (M1BYT) (L)
http://www.ukradioamateur.co.uk




  #6 (permalink)  
Old May 31st 06, 04:03 PM posted to uk.rec.caravanning
Mary Fisher
external usenet poster
 
Posts: 3,847
Default Buying second hand!


"Harry Bloomfield" wrote in message
...
Mary Fisher formulated on Wednesday :
"Harry Bloomfield" wrote in message
...

snip interesting and useful to some warning

... Take along a damp test meter - Aldi had some digital ones recently
for 10 - they just need the probes modifying to make them a little
finer at the tip.


How do you do that? Won't such modifying affect the reading in some way?

Mary


They simply measure the resistance or conductivity of the material they
are probing. A smaller contact area due to smaller diameter probes will of
course affect the reading, but it is only a matter of seeing if any change
in the reading is obtained on pushing the probes in - which would indicate
conduction and thus damp.


Yes but do you file it down or what?

Mary

--

Regards,
Harry (M1BYT) (L)
http://www.ukradioamateur.co.uk




  #7 (permalink)  
Old May 31st 06, 04:03 PM posted to uk.rec.caravanning
Mary Fisher
external usenet poster
 
Posts: 3,847
Default Buying second hand!


"Harry Bloomfield" wrote in message
...
Mary Fisher formulated on Wednesday :
"Harry Bloomfield" wrote in message
...

snip interesting and useful to some warning

... Take along a damp test meter - Aldi had some digital ones recently
for 10 - they just need the probes modifying to make them a little
finer at the tip.


How do you do that? Won't such modifying affect the reading in some way?

Mary


They simply measure the resistance or conductivity of the material they
are probing. A smaller contact area due to smaller diameter probes will of
course affect the reading, but it is only a matter of seeing if any change
in the reading is obtained on pushing the probes in - which would indicate
conduction and thus damp.


Yes but do you file it down or what?

Mary

--

Regards,
Harry (M1BYT) (L)
http://www.ukradioamateur.co.uk




  #8 (permalink)  
Old May 31st 06, 04:28 PM posted to uk.rec.caravanning
Harry Bloomfield
external usenet poster
 
Posts: 582
Default Buying second hand!

Mary Fisher pretended :
"Harry Bloomfield" wrote in message
...
Mary Fisher formulated on Wednesday :
"Harry Bloomfield" wrote in message
...

snip interesting and useful to some warning

... Take along a damp test meter - Aldi had some digital ones recently
for 10 - they just need the probes modifying to make them a little finer
at the tip.

How do you do that? Won't such modifying affect the reading in some way?

Mary


They simply measure the resistance or conductivity of the material they are
probing. A smaller contact area due to smaller diameter probes will of
course affect the reading, but it is only a matter of seeing if any change
in the reading is obtained on pushing the probes in - which would indicate
conduction and thus damp.


Yes but do you file it down or what?

Mary


Any way that will turn the blunt and wide probes into fine narrow ones
will work. One way would be to solder a pair of pins (or needles) onto
sockets which would be a tight fit over the existing probes. Another
way would be to simply bind some needles very tightly to the side of
the existing probes. So long as they are fine enough to poke through
the surface lining into the wood without leaving too much of a mark,
that is all that is really needed.

I remember hearing of another moisture probe which had been modified
for caravan damp testing use, though I cannot remember where I read
about it.

--

Regards,
Harry (M1BYT) (L)
http://www.ukradioamateur.co.uk


  #9 (permalink)  
Old May 31st 06, 04:28 PM posted to uk.rec.caravanning
Harry Bloomfield
external usenet poster
 
Posts: 582
Default Buying second hand!

Mary Fisher pretended :
"Harry Bloomfield" wrote in message
...
Mary Fisher formulated on Wednesday :
"Harry Bloomfield" wrote in message
...

snip interesting and useful to some warning

... Take along a damp test meter - Aldi had some digital ones recently
for 10 - they just need the probes modifying to make them a little finer
at the tip.

How do you do that? Won't such modifying affect the reading in some way?

Mary


They simply measure the resistance or conductivity of the material they are
probing. A smaller contact area due to smaller diameter probes will of
course affect the reading, but it is only a matter of seeing if any change
in the reading is obtained on pushing the probes in - which would indicate
conduction and thus damp.


Yes but do you file it down or what?

Mary


Any way that will turn the blunt and wide probes into fine narrow ones
will work. One way would be to solder a pair of pins (or needles) onto
sockets which would be a tight fit over the existing probes. Another
way would be to simply bind some needles very tightly to the side of
the existing probes. So long as they are fine enough to poke through
the surface lining into the wood without leaving too much of a mark,
that is all that is really needed.

I remember hearing of another moisture probe which had been modified
for caravan damp testing use, though I cannot remember where I read
about it.

--

Regards,
Harry (M1BYT) (L)
http://www.ukradioamateur.co.uk


  #10 (permalink)  
Old May 31st 06, 04:28 PM posted to uk.rec.caravanning
Harry Bloomfield
external usenet poster
 
Posts: 582
Default Buying second hand!

Mary Fisher pretended :
"Harry Bloomfield" wrote in message
...
Mary Fisher formulated on Wednesday :
"Harry Bloomfield" wrote in message
...

snip interesting and useful to some warning

... Take along a damp test meter - Aldi had some digital ones recently
for 10 - they just need the probes modifying to make them a little finer
at the tip.

How do you do that? Won't such modifying affect the reading in some way?

Mary


They simply measure the resistance or conductivity of the material they are
probing. A smaller contact area due to smaller diameter probes will of
course affect the reading, but it is only a matter of seeing if any change
in the reading is obtained on pushing the probes in - which would indicate
conduction and thus damp.


Yes but do you file it down or what?

Mary


Any way that will turn the blunt and wide probes into fine narrow ones
will work. One way would be to solder a pair of pins (or needles) onto
sockets which would be a tight fit over the existing probes. Another
way would be to simply bind some needles very tightly to the side of
the existing probes. So long as they are fine enough to poke through
the surface lining into the wood without leaving too much of a mark,
that is all that is really needed.

I remember hearing of another moisture probe which had been modified
for caravan damp testing use, though I cannot remember where I read
about it.

--

Regards,
Harry (M1BYT) (L)
http://www.ukradioamateur.co.uk


 



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