Worlds Cheapest Engine Temperature Guage

superheat6k said:
Just couldn't get the website to work - put stuff in the basket, but nothing appeared, the after lots of trying 12 items, no idea how many of what. So I then click the basket - says nothing in basket.
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I had the same problem at first then realised that if you add the item to basket then page refresh the item appears in the basket.
 
Someone on here recently posted a link to these:

http://www.ebay.co.uk/itm/New-90-25...ial_Automation_Control_ET&hash=item27df9bf91d

They're cheap and nasty, but at that price, I don't mind! They're so cheap, in fact, that I bought two of them (on the assumption that I'd be quite unlucky to have both fail at once!) and I now use one for the engine temperature and one for the exhaust. They're brilliant! I can set alarms (extra couple of quid for a couple of 85 decibel buzzers) at whatever temperature I like.

WP_000390_zpsa8078d62.jpg
 
The cheap ones are great but no alarm, the one's with an alarm look good but have to be cut into a panel - any suggestions for a surface mounted one with an alarm?
 
I ordered 5 they arrived yesterday, quick delivery, 4 work OK one reads "Hi" when temp goes above 28°C. Not worth complaining about at the price.
 
Hadenough said:
I like the look of those. Daft Q probably,from someone who a struggles with electronics, but can you cut/extend the lead for the probe? 1m is too short to get anywhere convenient to my engine bay.
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I think that's the advantage of the unit that can operate an alarm at a predetermined temperature. The display can be close to the monitoring point and the alarm can be anywhere you find convenient. One doesn't need to view the temperature constantly.
 
Lazy Kipper said:
The cheap ones are great but no alarm, the one's with an alarm look good but have to be cut into a panel - any suggestions for a surface mounted one with an alarm?
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I've got a couple like this that I use as a roving devices. AA batteries in the back but you could surface mount it on a bit of Velcro perhaps. Only did a quick search, mine are rated up to 110 degs and I did't pay anything like that, more like £3 from China if I remember.

http://www.ebay.co.uk/itm/DIGITAL-F...pt=UK_Kitchen_Accessories&hash=item3a83e73d32
 
jonrarit said:
If like me yuo only have an engine temp alarm then as the title says, this has to be the worlds cheapest and easiest to fit engine temperature guage.

Here

Simply tape the sender onto the engine (mine is near the thermostat housing) and hey presto you have a digital temp guage.

In fact they were so cheap I now have a exhaust temp guage, hot water temp guage and most importantly a beer fridge temp guage :)

JR
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Arghhh. What have you done??? They are selling loads of things that I didn't know I needed!!! Great site/store. Thanks
 
nigelmercier said:
... 12V version: http://amzn.to/1ltWKc6
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Hadenough said:
I like the look of those. Daft Q probably,from someone who a struggles with electronics, but can you cut/extend the lead for the probe? 1m is too short to get anywhere convenient to my engine bay.
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Yes, no problem. It's just a NTC type B3435 sensor, essentially a resistor that varies it's value with temperature. At 25°C it measures 10kΩ, then reduces as the temperature increases: NTC is "Negative Temperature Coefficient"

I'd probably use a phono (RCA) shielded audio extension cable, and put a phono plug on the sensor. The current is very low, and the shielding will help keep noise out of the lead.

Phono lead like this for example: http://amzn.to/1lx2p1g
 
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nigelmercier said:
Yes, no problem. It's just a NTC type B3435 sensor, essentially a resistor that varies it's value with temperature. At 25°C it measures 10kΩ, then reduces as the temperature increases: NTC is "Negative Temperature Coefficient"

I'd probably use a phono (RCA) shielded audio extension cable, and put a phono plug on the sensor. The current is very low, and the shielding will help keep noise out of the lead.

Phono lead like this for example: http://amzn.to/1lx2p1g
Click to expand...

Thanks, now work in progress.
 
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