Flir Systems has launched the SC thermal-imaging camera, which is designed to deliver a combination of infrared and visible spectral images. The portable. Its FireWire interface can transfer bit radiometric or RAW data directly into a PC for real-time analysis of captured images and for FLIR SC/SC also. Buy SC 45°, Thermal Imaging Cameras, 30 Hz Image Frequency, 45° FOV or other Radiometric cameras – uncooled products from Acal BFi BE. Get a quote.
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Last summer, I had a high school volunteer Padraic Odesse join my lab for a few hours a week to help out my graduate students flig data analysis. To assist him with learning about imaging, technology, sv660 experimental design, I set up a simple experiment for him to test. The attachment is actually two cameras in one.
The one lens is the lens that allows long wavelength infrared radiation to pass through to the detector and the other lens is probably very similar to an iPhone camera. Sc60 they are adjacent to each other, they very nearly capture a similar field of view. The FLIR software lets you do neat things with overlaying the images, but to be honest, I find the whole outline overlay to be annoying.
Great fun for non-professionals, but annoying if you wanted to use this camera for scientific purposes. So, if you have other FLIR software, you can extract the actual thermal image and do proper thermography on the image. I would not trust the spot temperature measurements. The software does not allow you to set the emissivity precisely or numerically, and distance and other parameters are not available.
Use the spot temperatures cautiously! You are commenting using your WordPress. You are flie using your Twitter account. You are commenting using your Facebook account.
Notify me of new comments via email. What other thermal imagers tend to do is use a shutter like this as a reference signal, and also flig Non-Uniformity Correction of the pixel array. If the reference signal is at a known and constant temperature, you can, in essence, calibrate the thermal detector to a more stable source.
FLIR SC, FLIR SC and FLIR SC – KVR Energy Limited
So, my lab assistant diligently captured an image with the two cameras, taken at the same distance and at 8 different water temperatures 5 to 40C. At a quick glance, they both perform quite well. Look at those R2 values! Rarely see that in fkir. But these are engineered devices. This tells me that there is some atmospheric contamination or attenuation of the signal the camera picks up.
The reason things look really accurate near room temperature is because the formula for calculating temperature predicts that if all temperatures are similar to each other, scc660 contaminating radiation signal will be similar to the object signal.
If you narrow in on how large the error is this will make a bit more sense.
Thermal Camera Showdown – FLIR ONE vs. FLIR SC660
Take the difference in Camera — Actual temperature for all 8 measurements. The mean absolute error will tell you whether the flit is reading higher or lower than actual temperature absolute value simple removes the negative sign. On the whole, both cameras perform rather well under these optimized conditions, although clearly the SC performs better.
This kind of error may be related to the electronics, warm-up time, or the sensitivity of the sensor itself, to name a few. Certainly not as inaccurate as I had feared it might be except see below. But, remember, we were performing the analysis using thermography software that allows for some correction of environmental variables, and we were constantly tuning the FLIR ONE.
Depending on your measurement purposes, you might be ok, but the best error you will get under optimal conditions appears to be greater 0. Because we ran the error analysis above under ideal conditions, we wanted sc606 be a little more realistic with the FLIR ONE since it is likely to be used by scientists as an affordable alternative to work in the field. As is usual with cell phones, people are likely to keep the device in their pocket, or maybe leave it exposed to the elements.
If you then turn the thermal camera on and take a spot measurement, there is bound to be error associated with the lack of tuning, but also because the camera temperature is changing while you are making the measurements, which would confound the tuning process itself.
FLIR SC620, FLIR SC640 and FLIR SC660
So we took as realistic an approach as possible ran the measurements 3 sv660 ways. If you keep the camera in a cold room, it will severely underestimate temperature by an average of 5. It does not return to normal temperatures within seconds. If you keep the camera in a warm room, it fli overestimate temperature by an average of 1. Strangely it does not seem to converge toward the real temperature within our 10 minute long experiment.
Finally, the rapid on data show you how the FLIR ONE really performs from rapid turn on without a thermal equilibration problemthrough various cycles of tuning.
FLIR SC Thermo-vision camera
Each time it jumps in temperature corresponds to when we tuned it. I like mine for teaching rlir since it is portable and fast to use, but I will still use my SC for most of my research purposes, due to the versatility of video capture functions, image resolution, and electronic stability.
I would insist on a calibration curve and assurance that these parameters have all been assessed. I am not affiliated with FLIR, nor do I receive revenue, salary, or funding from them, so this post should not be interpreted as an endorsement. Of course, I would be most grateful if FLIR did give me a free thermal camera or a sx660 lens for all the fine press I give them!
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