The PARD TA32-25 is the Thermal Handheld to have!
The New PARD TA32-25 Thermal Handheld with Laser Rangefinder has a number new of features
Key Features:
Runs on a Single 18650 Battery:
No relying on a internal battery that could fail leaving you with a brick, or reliance on Power Banks to top you up, or those expensive custom batteries.
You can use this Thermal all you want no need to look at the battery indicator gauge and worry about how long you have left!
Just swap it out with another 18650 battery you carry in your pocket.
High Performance Thermal Core
With a NETD of <25mK the TA series produces excellent images with great Contrast; others may have 35 or 40, even 50. 30 is the new standard!
Why is NETD such an important figure:
NETD is Noise Equivalent Temperature Difference, basically this noise is in the images you are looking at.
Simply put this is how well (at a defined set of parameters) the thermal sensor can discern between 2 temperatures.
It is measured in Millikelvin (mK). Typically from 30mK to 50mK.
The
smaller the figure the better the sensor can discern small temperature
differences, a Lower Figure will generally result in a better image,
with better contrast
.
PARD TA Thermals are 25mk which is considered the new standard.
Excellent NETD is a fundamental that must be present.
One other big item to watch out for is the F number of the Lens, often cheaper and smaller lenses are used such as F1.2.
This means there will be a loss of 20% so that 35mK sensor is really 42mK.
The end result will also be affected by the quality of lens, F Number, The programming of the Core and the environmental conditions.
This is a image showing a lower NETD on the left, vs that of the right – you can see far more definition in the image on the left.
Pack Thermal Cores are 384 Pixels wide, some competitors are just 320 wide in the same class, more pixels the better!
Why are the Pixels such an important figure:
The Size of the Thermal Core or Detector is one of the key elements of any thermal cameras performance.
Simply put the more pixels you have for the same field of view the better the image is going to be.
As you can see even the increase from 320 to 384 has resulted in a large number of extra pixels, of course a 640 is nearly 3 times as much again.
The Pixels are now .12u apart, that’s a improvement from the older .17u standard that was common – the smaller distance produces more detail.
The overall magnification and Field of View also comes down to what Lens is installed as well.
Specifications:
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