Low coolant alarm for £6?

[longwori]

OK, Please dont ridicule me too much for this. I am just genuinely trying to understand what the difference is.

Can someone tell me why low-coolant alarms are £70 when you can get a low water alarm with LED for about £6 off ebay?

http://cgi.ebay.co.uk/BOYU-Water-Level- ... 25575a38d5

Surely they do the same job?

Im sure there is a very good reason for not adapting something like this but I was just curious what it was as there is a massive difference in cost and I cant immediately see why!

Thanks guys.

[g8dhe]

Well its intended for a fish tank aquarium where the suckers hold the two sets of sensors to the glass at the right height and the leads come out of the top ! Now try fitting that to a sealed pressurised container with liquid possibly as hot as 90ºC !!!!

[haydn callow]

I'm afraid it simply is not suitable for monitoring your vehicles coolant level.
The £75 version has been developed over a number of years and has proved to be very reliable and to have worked on many occasions.
It self tests every time you switch on the ignition and tells you if the level is good (or not).
It has a built in delay so you do not get false alarms if the sensor is exposed for less than a couple of seconds.
It does it's job month after month in a HOT and PRESSURIZED enviroment.
The electronic componants are totally differant and are the best we can obtain reguardless of cost.
They are hand built, come with a no quibble warranty and the kits come with everything you need to fit to your Bongo.
Also available for any other vehicle.

[longwori]

Well its intended for a fish tank aquarium where the suckers hold the two sets of sensors to the glass at the right height and the leads come out of the top ! Now try fitting that to a sealed pressurised container with liquid possibly as hot as 90ºC !!!!

Hi Geoff, yes I wasnt thinking it could be used without some modification but (and I am happy and sure i will be corrected) it looks like the professional device uses a couple of screws at the correct points on the expansion tank as the contacts (meaning nothing to come out of the top) which could be connected to a device like this without too much difficulty. There is then no pressure or temperature issues.

But, as Haydn points out, I imagine the thing would be going off around every bend without some delay as you dont get many mobile fish tanks!

[jaylee]

Well its intended for a fish tank aquarium where the suckers hold the two sets of sensors to the glass at the right height and the leads come out of the top ! Now try fitting that to a sealed pressurised container with liquid possibly as hot as 90ºC !!!!

Hi Geoff, yes I wasnt thinking it could be used without some modification but (and I am happy and sure i will be corrected) it looks like the professional device uses a couple of screws at the correct points on the expansion tank as the contacts (meaning nothing to come out of the top) which could be connected to a device like this without too much difficulty. There is then no pressure or temperature issues.

But, as Haydn points out, I imagine the thing would be going off around every bend without some delay as you dont get many mobile fish tanks!

There is this...! http://handheld.softpedia.com/get/Games ... 1270.shtml

[haydn callow]

Says it all.
http://www.igmaynard.co.uk/bongo/forum/ ... 14&start=0