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Comparison of Three Popular Thermal Cameras for Smartphones; infiray’s value is comparatively higher

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Comparison of Three Popular Thermal Cameras for Smartphones; infiray's value is comparatively higher

Today I want to share a useful tool – thermal camera for smartphones. During circuit design or troubleshooting, thermal cameras can directly “see” the temperature distribution. So that it’s easy to find thermal issue during design. There are only a few brands of thermal cameras on the market. I have used Flir one pro and Seek compact pro before. Recently I got one Infiray T3S. Below is my test and comparison.

from left to right – Flir one pro,InfiRay T3S,Seek compact pro

Basic Comparison of Specifications

ModelResolutionFrame RateData RateTemperature Measurement RangeAccuracyPrice
Flir one pro160×120
19200
8.7Hz< 170k-20–400℃±3℃ or ±5%$299-376
Seek compact pro320×240
76800
< 9Hz< 700k-40–330℃±3-5℃$449
InfiRay T3S384×288
110592
25Hz> 2700k-20℃–120℃±2℃ or ±2%$749

1.   Size, Weight and Material

a.    Size

Flir one pro is slightly bigger because it also contains a regular camera. InfiRay T3S has bigger lens. Seek compact pro is the smallest.

Size Scores

ModelScore
Flir one pro6
Seek compact pro8
InfiRay T3S7

Size of cameras

b.    Weight

All of the three models are light weighted.

  • Flir one pro – 38g
  • Seek compact pro – 15g
  • InfiRay T3S – 40g

Weight Scores

ModelScore
Flir one pro7
Seek compact pro8
InfiRay T3S7

c.    Material

Cover material affects camera’s ruggedness, weight and electro-magnetic radiation protection.

  • Seek compact pro – it feels like cheap plastic
  • InfiRay T3S – it has metal cover. That’s why it is heavier. It is also anodized. The metal cover not only protects internal circuit better but also has electromagnetic radiation protection. So that it can work properly under certain environment such as transformer stations.
  • Flir one pro – the cover is also plastic but feels soft, which provides protection in case it drops on the ground. The lens is not protruding which makes it less easy to damage.

Material Scores

ModelScore
Flir one pro7
Seek compact pro6
InfiRay T3S8

d.    Lens.

The working wavelength of thermal imaging is 7-14µm. The best lens material is Germanium. Some producers use less expensive synthetic materials. According to my investigation and directly consulting with manufactures. I got the lens materials are as follows:

  • Flir one pro – vulcanized synthetic material
  • Seek Compact pro – vulcanized synthetic material
  • InfiRay T3S – Germanium

Lens size- Flir one, Seek Compact Pro, InfiRay T3S

For infrared application, Germanium has best transmission of 95%. It can reach 99% with AR coating. Versus synthetic material can reach 95% with AR coating. Generally, cameras with better lens get clearer pictures and accurate temperature measurement.

Lens Scores

ModelScore
Flir one pro5
Seek Compact pro5
InfiRay T3S9.5

2.   Image Quality

The main functions of thermal cameras are imaging and temperature measurement.

Resolutions of the three models are:

  • Flir one pro       – 160×120,with regular camera 1440×1080 pixels
  • Seek Compact pro – 320×240
  • InfiRay T3S      – 384×288

Let’s compare the images.

a.    Close-up Image

­­After overlapping with visible light, images from Flir one pro improves a lot. The thermal image and regular image are matched pretty well.

Image from Seek compact pro looks similar to Flir one ‘s 160×120. Even it is 320×240.

Image from InfiRay T3S is much better. The 384×288 pixels gives more- detailed and rich, sharp image.

Close-up Image Scores

ModelScore
Flir one pro4 for thermal only 6 w/ visible overlap
Seek compact pro5
InfiRay T3S9

b.    Close-up Portrait

Images from Flir one pro are better than the one from Seek compact pro, even its resolution is lower. The overlapping needs improvement because the visible and thermal images don’t match very well.

I took many pictures with Seek compact pro but could not get good one. The lady’s hair and background almost mixed.

Image from InfiRay T3S is much clear. Even the lady’s face detail and hair can be seen.

Close-up Portrait Scores

ModelScore
Flir one pro5 for thermal only 6.5 for thermal and visible overlap
Seek compact pro4.5
InfiRay T3S9.5

c.    Medium Range Image

Above pictures were all taken at about twenty meters distance.

The images of Flir one can hardly distinguish subject and the reflection from floor. And the thermal and visible image overlap matching problem is more obvious.

Seek compact pro is better than Flir one pro on details. The person and its reflections can be distinguished.

Image from InfiRay T3S is the best. The person’s head, arms, legs can be seen clearly.

Medium Range Image Scores

ModelScore
Flir one pro3 for thermal only 5.5 for thermal and visible overlap
Seek Compact pro4.5
InfiRay T3S9.5

d.    Long Range Image

The image from Flir one pro without visible overlap is very blur. With visible overlap the different floors can be seen.

Seek Compact pro is better. Windows can be distinguished.

InfiRay T3S can “see” windows more clearly, and other details such as logo on the building, street lights and trees.

Long Range Image Scores

ModelScore
Flir one pro3 for thermal only 5.5 for thermal with visible overlapping
Seek Compact pro5
InfiRay T3S9.5

From all images mentioned above, InfiRay has best image quality. It provides more detail and rich display.

3.   Temperature measurement

  • Flir one pro       range -20–400℃, accuracy ±3℃ or ±5%
  • Seek compact pro       range -40–330℃, accuracy unknown.
  • InfiRay T3S      range -20–120℃, accuracy ±2℃ or ±2%

InfiRay T3S doesn’t have widest range but has best accuracy. ±2℃ or ±2% is the industry standard so it can be directly used on professional industries such as electric power industry. As for circuit design, since people could get burned with PCBA that is above 60℃, -20–120℃ is more than enough.

a.    Body Temperature Measurement

  • Flir one pro – 35.5℃
  • Seek Compact pro – 33℃
  • Infiray T3S – 36.13℃

The measurements from Flir one pro and InfiRay T3s are close. And they match with normal body temperature. The measurement from Seek compact is quite off.

Body Temperature Measurement Scores

ModelScore
Flir one pro7
Seek Compact pro5
InfiRay T3S8

b.    PCBA Temperature Measurement

Flir one pro, with the help of visible overlap, can see positions of components, however the problem is that the thermal and visible images not match well.

Seek compact pro is hard to find positions of components. Just could barely see PCBA itself.

InfiRay T3S got a clear image and easy to locate the components that has highest temperature.

PCBA Temperature Measurement Scores

ModelScore
Flir one pro7
Seek Compact pro4
InfiRay T3S9

c.    Parameter Settings

Parameter settings affect measurement accuracy. All three models have emissivity setting. Flir one pro and Seek compact pro both provide a few fixed options. It’s easy for regular users, however, advanced users are not able to set emissivity for specific material to get accurate measurement. InfiRay T3S has emissivity, ambient temperature, humidity, distance settings to fine-tune the measurement. This function is very helpful for hardware engineers to get accurate temperature measurement.

Parameter Settings Scores

ModelScore
Flir one pro3
Seek Compact pro3
InfiRay T3S9

4.   Battery Lifetime

Flir one pro equipped with battery that needs to be charged before use. Seek compact and InfiRay T3S are powered by smartphones through USB connection.

The battery lifetime of Flir one is very short. It only lasted about thirty minutes when I used it. When ambient temperature is lower, the battery lifetime is even shorter.

Battery Life Scores

ModelScore
Flir one pro3
Seek Compact pro8.5
InfiRay T3S8

5.   Conclusion

Comprehensive Scores

  Flir one proSeek compact proInfiRay T3sNotes
chippixel1.76.910 
Frame rate3.53.510 
appearance material lenssize687 
weight787 
material768 
lens559.5 
convenience98.58.5 
Image qualityNear subject659Flir thermal ony (4)
Near portrait6.54.59.5Flir thermal only (5)
Medium range5.54.59.5Flir thermal only (3)
Long range5.559.5Flir thermal only (1)
video 329Flir thermal only (1)
Temperature measurementBody758 
PCBA749 
Parameter correction339 
Battery life 38.58 
Total 88.786.4140.5 
 Price-Performance ratio55.7202.5493.7 

Considering materials, image quality, temperature measurement accuracy, InfiRay T3S is the best and highly recommended. (All rights reserved. Please indicate the source if repost)

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Interesting Facts About VPN That You Must Know

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Interesting Facts About VPN That You Must Know

The day-by-day awareness regarding technology that appeals to us to use them makes our internet journey more amazing. The one most beneficial network is provided by free VPN (Virtual Private Network). The cyberattacks convince the users to secure their data and activity to freely connect to the content they want on the internet anywhere without any hesitation. Free VPN free you to cross the regional boundaries. It prevents you from online threats so that you can overcome the malware.

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There are many sites and content worth watching and reading, but you cannot access them because they are not available in your region. So get yourself free from the regional boundaries and connect to a free VPN!

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Free VPN provides many services, but it takes no time to get connected with this amazing network. You can secure your device with only one tap.

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There are almost 5000 plus servers of free VPN available worldwide. You can get their services by knowing their service availability in your region. 

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Free VPN provides you with an encrypted tunnel of devices that protects the information you are sharing or searching and makes your network untraceable from cyber threats. 

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Last Words 

Whenever you want to get free VPN services, please don’t believe in rumors about their facts. You must be very well aware of the VPN you want to use. DewVPN provides you with unlimited and free access to the internet with complete security, and it costs nothing while connecting to its amazing features. Hurry up! Install it now and secure your devices. 

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Description of Security Guard License Training class Nashville Tennessee:

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Description of Security Guard License Training class Nashville Tennessee:

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Scannable texas real id

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Scannable texas real id

sometimes we have to work to meet daily needs, but we cannot have a Texas license. If you want to have your texas ids according to the countries laws. Ids hub is the best and secure place for your ids. You can have your fake texas ids easily. We provide you counterfeit ids, and they are scannable ids. You can drive texas and earn for your daily needs

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