Thanks for your insights JPlayer,
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Originally Posted by J_Player
The "Laser Gun (DIS 300) device detecting for Gold, Treasures and Caves" is actually an infrared thermometer that appears to be an instrument manufactured by Oakton Instruments in Illinois, or a very close copy of one.
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In fact the manual confirms that but tells that they performed modifications on the unit for treasure hunting use which also includes adding two more sensors.
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I can guarantee that Oakton Instruments never included any gold or cave sensors in their thermometers, nor did any other thermometer manufacturer that I know of.
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See above.
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1. If a cave has a warm or cold draft exiting from its mouth, and the thermometer is within range, then you will see that the temperature is different than the surrounding areas. This does not guarantee you found a cave, but it is a temperature anomaly that could be a cave. It could also be a damp area of soil where ground water has come to the surface, or a number of other things that would cause a different temperature in that location.
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Correct. The same applies for gold. But they claim that if in the main display appears say 79 and you move the device slightly to either side and the numbers dimish gradually say for78, 77, etc. Then highly likely there's a target there indeed. But if from 79 for instance it drops to 54, then it might be a metal rock or some false diagnostics I will not go over now.
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The most likely way to find an anomaly under the surface is when the surface temperature changes. ie: Suppose the clouds move to cover an area that was in the hot sun for several hours. After maybe 10 minutes in the shade, the surface will start to lose it's heat.
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That's why they recomend night search for that.
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The thermometer could also show areas that retained residual heat into the night after the surrounding areas cooled. Another use for infrared thermometers could be to follow cold drafts or trails of dampness to their source, if it was thought that this could help find a treasure.
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Yes, I agree.
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How sensitive is the infrared thermometer? The models sold by knouzm and Kellyco will indicate 1/10 of a degree change. The absolute temperature can be calibrated if necessary, but This is of little use to the average treaure hunter on foot. The necessary temperature range in the field would be probably from -10C to 200C, but you would most likely find temperatures from 10C to 70C in normal use. Data logging features are of little use in the field unless you need to log a number of temperatures over a period of time, as in timed temperature changes as an engine heats up.
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They claim anything is measurable above absolute zero. So this agin reinforces the idea it might work as claimed.
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Do these thermometers detect buried gold? Not gold specifically. They could detect any metal or other substance that retains heat differently than the surrounding soil. This includes iron, copper, brass, silver, lead, water, wood, a hollow cavern, or practically anything different than the surrounding soil.
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It could. But gold reflects virtually all heat that it's exposed hence the 'gold' setting. Chances are that for the required temp change with all conditions in manual met, it will be gold.
I'll check that, better, I'll have my friend check that when he test the device.
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Now let's look at the Kellyco thermometers. The DIS600 pro is not from the same manufacturer as the Knouzm thermometer. The Kellyco DIS600 is manufactured by Cole Parmer. In the Cole Parmer catalog, we see they no longer sell their 16-point laser circle model, as this has been replaced by a new, improved 2-point rotating spot lasers that indicate the exact distance to focus for the best target resolution. However, Kellyco is selling you a lot of other expensive features that the average treasure hunter has no use for, such as: Hi/low alarms, max/min temp, -diff, average, data output, and 100 point data logging. How would a treasure hunter in the field use these features? Aren't they more appropriate for a factory environment? Kellyco does not reveal the most important features of any of these thermometers, the resolution and spot-to-distance ratio. But no problem, the Cole Parmer catalog shows that all their infrared thermometers have 0.1 degree resolution and lists the spot-to-distance ratios. So even if these are discontinued Cole Parmer thermometers, they should have 0.1C resolution. It seems that the current model Cole Parmer thermometers with similar specifications cost less than the Kellyco price. However, a Cole Parmer thermometer without the un-needed features cost in the $600-700 range.
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Thanks for the info.
Great links thanks again.
In fact if you could test these thermoneters for Thuning, we could compare results with this DIS300 unit and see if there's any and in this case see what kind of modifications Knouzm claims to have made to allow that, if this proves true.