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Dec 22, 2006 | 11:42 PM

#16

Flywest

Senior User

Joined: Nov 2006

Posts: 245

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From: West Australia

Maybe

Maybe it measures RH = Relative Humidity!

You see - when air gets to freezing temp - it becomes a VERY dry RH as all the water is no longer in liquid or gaseous form...

The old RH devices used to use human hair strands in a clump tensioned between sensitive springs and would lengthen shorted depending on moisture in the air!

In a past life as a forester who used to take weather readings every day (for fire behaviour predictions - occasionally I'd have to dissassemble the RH meter and give the hair clumps of strands a shampoo, rinse, conditioner, - blow wave, and blue rinse set & perm!

Who knows - you might have a clump of someone famouses hair in your truck somewhere...measuring RH!

Cheers!

Dec 23, 2006 | 05:37 AM

#17

mrfixit64857

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Joined: Sep 2006

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From: Jasper, MO

WOW... all that in that tiny little sensor? it's about the size of my LEVI's buttons lol

Dec 23, 2006 | 03:54 PM

#18

Vinford

Cargo Master

Joined: Aug 2004

Posts: 3,455

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From: Williams Lake B.C.

So actually nobody knows the answer to this?

Dec 23, 2006 | 06:27 PM

#19

Orezona

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Joined: Oct 2004

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Quote:

Originally Posted by mrfixit64857

WOW... all that in that tiny little sensor? it's about the size of my LEVI's buttons lol

Where is it? Mine reads ICE closer to 32, maybe 33-35, but definately not as high as 38.

Dec 23, 2006 | 07:07 PM

#20

mrfixit64857

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From: Jasper, MO

Maybe I should explain...I'm talking about the aftermarket ones I have installed in our trucks. Big ones, small ones, they have ice-alert. I have mounted the sensors up under the sunvisor above the windshield on the outside. THOSE are the ones that go off at 38.

Dec 25, 2006 | 12:08 AM

#21

Orezona

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I stand corrected, mine flashed ICE after church today at 37 degrees. The 15 year old noticed it.

Dec 25, 2006 | 12:49 AM

#22

Mike58

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Joined: Oct 2006

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Big Crash

I have noticed that when the temp is dropping it will start to flash ICE then when you get low enough it stops flashing.

The big crash was Saturday, my wife left for work Saturday morning a week ago on bare and dry roads. started down a windy hill and found a place where water had been running down a driveway and onto the road and made about a 100' patch of ice. no other water or ice anywhere. the temp was about 25. After a trip to the ER she is just beat up a bit. Totaled the Acura RL though.

Ice is nothing to mess with and any it is worth remembering that it can really ruin your day. Every time I have encountered ice I was prepared and driving really carefully. Bone dry road you really don't think you are going to find it. I have a whole new respect for any attempt to warn me of my complacency.

Dec 25, 2006 | 12:53 AM

#23

Bird Dog

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Joined: Nov 2005

Posts: 392

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From: Heber UT

Remember the gauge only measures temps and does not calculate for wind chill. The temp may be 38 and with a 15 mile per hour wind the temp drops to about 28. So in a nut shell the gauge isn't warning you there is ice present it is warning that there is a possibility there can be ice, if the wind is blowing. JMI