by Ana Urbina (Admin)
Line Scanner: Guarantee a resilient temperature monitoring of your process
Imaging IR sensors for non-contact temperature measurement are available in an infinite number of different qualities. Even high-quality and price-intensive devices are not always the best choice for reliable measurement results. IR images with high geometric resolution do not automatically guarantee accurate temperature measurements.
The quality of the temperature measurement depends largely on the combination of the object to be measured with a measuring system suitable for this object.
Almost 97% of inline applications are concerned with reliable process control and thus primarily with reliable and reproducible temperature measurement. This is referred to as the capability of process. Unsuitable sensors often deviate seriously (20-40%) from actual temperatures, not because they cannot measure the temperatures in general, but because they cannot deal with movement or different surfaces.
Our Fluke Process Instruments line scanner series MP150/300 of the latest generation always ensures the optimal and process-safe temperature monitoring solution in an infinite number of applications. This is possible thanks to different models with different spectral sensitivities and measuring ranges.
The IR line scanner is used partly for temperature profile measurement or, in the case of moving objects, also for complete surface evaluation. Moving objects in particular require fast IR detectors in the sensors. Slower sensors "blur" the measuring points (motion blur). One should not confuse the frame rate given in the data sheets with the measuring frequency, unfortunately this is hardly ever shown. Most of the time you will only find a reference to the response time.
Example:
- Frame rate / frame rate: 60Hz
- Response time(t90): 150msec
- Measuring frequency: 1000msec/150msec=6.67Hz
Thus, the unit transmits 60 images / second, but in the end there are only about 7 independent images.
Our line scanners have a line frequency / measuring frequency of up to 300Hz. This means that no images or pixel values are transmitted twice. There can also be no jitter effects (crosstalk) from close pixels, as the detection is based on a single detector pixel, which is merely deflected.
We want to avoid confusion among our clients by offering them the appropriate sensor technology for their process monitoring requirements. The application will ultimately determine whether we use pyrometers, line scanners or cameras.
Feel free to contact our experts. We are ready to help you!