Warning For Water Hunters At This Time Of Year

[John-Edmonton]

Sometimes the laws of physics are at play without us even being aware of them. For instance, if you take a plastic sealed container, put a small pin hole in it and submerge it hot water, you will notice shortly that air bubbles will start to leak out under pressure, simply because the inside temp is warming up, causing a positive pressure.

Now reverse the conditions. Warm the plastic container up, and place it in cold water. What happens? The cooling of the temperature caused a low pressure or vacuum to appear inside the container, and in order to reach an equilibrium, it sucked in water.

Watch how hot your equipment is before you submerge it in cold water. A metal detector in the car trunk or in the car with the sun shining on it will cause it to get extremely hot. By putting it in the cold water, you are causing a tremendous amount of vacuum to be produced as the the inside of the coil, connector or electronics box tries to reach an equilibrium of pressure. Create enough vacuum in the coil, connector, splicing, electronics and you might get some leakage. Please......cool your equipment off before suddenly submerging it in cold water. This is true for all makes and models of detectors. Although leaks can occur for many other reasons, this should surely help.

 

[Jim in Idaho]

Really good tip, John...many thanks.
Jim

 

[Irishgoldhound]

Very good info! Good to know. So I guess putting the air conditioner on in the car to cool off the detector before hitting the water would be a good idea.

 

[G.I.B.]

Thanks for the tip John,

Down here in Florida the air temp is 89. The Gulf water temp is 88.

The beer temp is 38.

We are careful to not immerse our coils into the beer.

Ahoy!

 

[Kodiak43351]

Great tip John. I never leave my stuff in back of my SUV unless I'm going to hunt but it does get hot in there if you leave it in there. Awesome advice I haven't thought of.

 

[RustyGold]

One of the better Tips! Thank you John for posting this! Best of Luck!

 

[Keppy]

good info..

 

[Sharryn]

Thanks for this tip John! I never would have given it much thought before you mentioned it. Could have saved someone a lot of $$$.

 

[BVI Hunter]

Thanks for the tip John,

Down here in Florida the air temp is 89. The Gulf water temp is 88.

The beer temp is 38.

We are careful to not immerse our coils into the beer.

Ahoy!

View attachment 1022408View attachment 1022409

Same here


Elizabeth Bay Water Temperature and Wetsuit Guide (Tortola – BVI, British Virgin Islands)

Water Temperature


Today's Elizabeth Bay sea temperature is 28.6 °C.


Statistics for 14 Jul (1981–2005) – mean: 28.0 °C, range: 27.3 °C to 28.9 °C

 

[penzfan]

Great tip John

 

[Irishgoldhound]

So what about when guys go from dry sand in the hot sun to wading in the cool water?