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Old 03-29-2005, 23:02   #1 (permalink)
fanie
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Conductivity Sensor??

Having Just had to rebuild my Disco 300Tdi for the second time in 6months
due to loss of water, I am now rather keen to find a conductivity sensor
that can be fitted to the header tank and provide a warning when the level
drops.

Of course I am not keen to do anything to mess with the integrity of the
header tank and so this would rule out drilling holes and sticking probes
in. I would like a replacement header tank cap that has probes installed.

Anyone got any ideas?

Regards
Stephen


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Old 03-30-2005, 02:01   #2 (permalink)
Steve Taylor
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Re: Conductivity Sensor??

fanie wrote:
> Having Just had to rebuild my Disco 300Tdi for the second time in 6months
> due to loss of water, I am now rather keen to find a conductivity sensor
> that can be fitted to the header tank and provide a warning when the level
> drops.
>
> Of course I am not keen to do anything to mess with the integrity of the
> header tank and so this would rule out drilling holes and sticking probes
> in. I would like a replacement header tank cap that has probes installed.
>
> Anyone got any ideas?


If you want to hack something together, look for "Qprox" sensors - they
work on capacitance, and you can put a sensor on the outside of a
plastic tank and see the water level inside.

Steve
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Old 03-30-2005, 02:01   #3 (permalink)
Austin Shackles
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Re: Conductivity Sensor??

On or around Wed, 30 Mar 2005 08:01:45 +0200, "fanie"
<fanie@checkitsystems.com> enlightened us thusly:

>Having Just had to rebuild my Disco 300Tdi for the second time in 6months
>due to loss of water, I am now rather keen to find a conductivity sensor
>that can be fitted to the header tank and provide a warning when the level
>drops.
>
>Of course I am not keen to do anything to mess with the integrity of the
>header tank and so this would rule out drilling holes and sticking probes
>in. I would like a replacement header tank cap that has probes installed.


did you find out where the sodding stuff goes?

on ours, it had a new head (and gasket, natch) after it was cooked, and
since then has had a new water pump (which was shagged) and a new P gasket
recently, and it *still* loses a small amount of water.

--
Austin Shackles. www.ddol-las.fsnet.co.uk my opinions are just that
Blue: The sky is blue for a reason. Blue light is a source of strength
and harmony in the cosmos. Create a blue light in your life by
telephoning the police
from the Little Book of Complete B***ocks by Alistair Beaton.
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Old 03-30-2005, 02:01   #4 (permalink)
Richard
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Re: Conductivity Sensor??

Wont a cap from a classic RR fit? It has a float switch built in. When ours
broke I bought a Vauxhall Carlton one which was exactly the same (Bosch I
think). So you should be able to get one from a scrapyard easily enough
Richard


"fanie" <fanie@checkitsystems.com> wrote in message
news:vpWdnb9C76JU3dffRVn-1A@is.co.za...
> Having Just had to rebuild my Disco 300Tdi for the second time in 6months
> due to loss of water, I am now rather keen to find a conductivity sensor
> that can be fitted to the header tank and provide a warning when the level
> drops.
>
> Of course I am not keen to do anything to mess with the integrity of the
> header tank and so this would rule out drilling holes and sticking probes
> in. I would like a replacement header tank cap that has probes installed.
>
> Anyone got any ideas?
>
> Regards
> Stephen
>



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Old 03-30-2005, 03:02   #5 (permalink)
Austin Shackles
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Re: Conductivity Sensor??

On or around Wed, 30 Mar 2005 09:24:09 GMT, "Richard"
<NO.SPAM@AT.NOSPAM.co.uk> enlightened us thusly:

>Wont a cap from a classic RR fit? It has a float switch built in. When ours
>broke I bought a Vauxhall Carlton one which was exactly the same (Bosch I
>think). So you should be able to get one from a scrapyard easily enough
>Richard


ooer. Mind, mine would be forever putting the light on...

--
Austin Shackles. www.ddol-las.fsnet.co.uk my opinions are just that
"All animals are equal, but some animals are more equal than others"
George Orwell (1903 - 1950) Animal Farm
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Old 03-30-2005, 22:01   #6 (permalink)
fanie
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Re: Conductivity Sensor??

I was loosing about a cup of water a week, but when it (the head gasket)
went, I had nothing left. It was fairly gushing out. As I am South Africa, I
am not too sure about the vauxhall watsit (Vauxhall it sold as Opel in this
market) but I am also not keen on messing with the pressure rating of the
cap unless I am sure it is correct.

I have heard of various widgets that monitor engine oil pressure and water
temp and start buzzing if it gets too loud but I have not come across any
details as yet.

I can use my national instruments Fieldpoint to do all that, but at a few
UKP (about ZAR30 000.00) it seems overkill.

Regards
Stephen


"Austin Shackles" <austinNOSPAM@ddol-las.net> wrote in message
news:u4uk41dlmkau75kt5kt6jkj6n6l2bml02i@4ax.com...
> On or around Wed, 30 Mar 2005 09:24:09 GMT, "Richard"
> <NO.SPAM@AT.NOSPAM.co.uk> enlightened us thusly:
>
>>Wont a cap from a classic RR fit? It has a float switch built in. When
>>ours
>>broke I bought a Vauxhall Carlton one which was exactly the same (Bosch I
>>think). So you should be able to get one from a scrapyard easily enough
>>Richard

>
> ooer. Mind, mine would be forever putting the light on...
>
> --
> Austin Shackles. www.ddol-las.fsnet.co.uk my opinions are just that
> "All animals are equal, but some animals are more equal than others"
> George Orwell (1903 - 1950) Animal Farm



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