@robby
On the HIKMICRO B20 pic above it shows a temp.-range between 338.6°C and 19.5 °C. But what range has the FLIR One Pro? That's not displayed. Thats for sure a software issue. I would also bet that the temp range on the FLIR One Pro is not as high as the HIKMICRO B20 and the lowest temp shown on the FLIR pic is in my opinion much higher.
Coincidentally, I saw exactly the two photos in the Amazon reviews recently. I assume that was you? ?
Incidentally sensors from "Infiray" are installed in the UNI-T devices, quite high-quality sensors (in-house development). The problem with the UNI-T devices is that they are cheaply assembled. Here is a comparison between the quality of the UNI-T devices and the devices from HIKMICRO:
1.
UNI-T 260B Teardown
eevblog: UNI-T 260B Teardown (click here)
There are many users on the eevblog-forum who keep complaining about image spots on newly arrived UNI-T devices. Apparently there's something wrong with quality control: some people found fingerprints from inside the device on the lenses or the lack of brass screw inserts in the plastic casing. Fingerprints on the lens is not particularly annoying with thermal imagers but fits in well with the rest of the quality design. It is clear: If you offer something cheap you have to save costs somewhere!
The problem is that if there is a speck of dust on the sensor somewhere and it falls off during shipping the calibration is no longer correct and there will be uncorrectable image errors.
Also the batteries in the UNI-T have no temperature monitoring for charging. Quite risky.
2.
Hikvision DS-2TP31 (which is the same company 'HIKMICRO')
eevblog: Hikvision DS-2TP31 [=HIKMICRO] (click here)
Clear difference with much better quality of the device compared to the UNI-T. The battery temperature is monitored when charging. The sensors in HIKMICRO devices are also in-house developments. See especially the authors summary in post #6.
The assertion that the same sensor is located in each of these Chinese thermal imaging cameras is quite incorrect.
I have to say that I also tend to associate China with cheap goods but there are a few companies that are now catching up. And the quality of their own developments are now on the same level as that of established companies. What is still missing are such software subtleties as here this dynamic range in
automatic mode. But honestly: You can easily set it manually to your needs!? From my point of view this is no reason to buy a significantly more expensive device which usually only has 9 Hz.