A detector resolution:
That is, the number of pixel points of the thermal image. The higher the resolution, the more points means that the temperature measurement, can be measured smaller targets and observed to a greater distance. Typically, thermal imaging cameras are available in conventional resolutions of 160*120, 400*300, 640*480, 800*600
The use of a larger array of resolutions in a thermal imaging camera can:
Enable the effective pixel count to increase, so that more details can be presented
Get a wider field of view, and an expanded area of coverage with a lens of the same focal length
Enable a better visual effect from the video
Detector resolution
Two, focal length/field of view/spatial resolution:
Depending on the size of the target object to be observed, the distance, the scope of observation and the details, to select different lens configurations, so as to obtain different spatial resolution.
Three, thermal sensitivity
Also known as NETD (Noise Equivalent Temperature Difference), the noise equivalent temperature difference, that is, the smallest temperature that the camera can distinguish. the smaller the NETD, the higher the thermal sensitivity, indicating that the output of the infrared image noise is smaller, the camera can find the more small temperature changes.
The use of smaller NETD detector can make:
Target background recognition ability is stronger
Target details are more clearly distinguishable
Supporting optical system options more flexible: F/1.0, F/1.2, F/1.4
The whole system is smaller
The whole system is more cost-effective
.Four, temperature range / accuracy
Users can choose the appropriate thermal imaging camera temperature range and accuracy according to the temperature range of the object to be measured. Temperature measurement accuracy is the error between the measured temperature value and the absolute temperature. A typical industrial-grade camera has a temperature measurement accuracy of ±2 degrees Celsius or ±2% (whichever is greater).
V. Frame rate
The frame rate is the number of frames per second that the camera produces a complete image. If the measured object is moving very fast or the temperature changes quickly, you should use a thermal imaging camera with a higher frame rate. Otherwise the measurement accuracy will be affected. The frame rate of some products may be set to 9 Hz due to export restrictions. Domestic thermal imaging cameras can reach up to 50 Hz or even higher.