thermal monocular with temperature readout? (AGM, FLIR, Armasight, Pulsar, etc) - Page 1
Forum section: electronics / general

author: frogg
author_rank: Regular Contributor
timestamp: September 08, 2021, 06:06:57 pm
content: Does anyone happen to know of any thermal monoculars or sights with temperature readouts?I'm not talking about full scene radiometry, I'm just talking about +/- 2 or 3 deg C accuracy at the center of the image or something like that.Another alternative would be raw sensor readout via USB?

author: svgurus
author_rank: Regular Contributor
timestamp: September 08, 2021, 10:03:45 pm
content: What do you need temperature for? what do you mean by raw usb readout? Iray dl13 monocular can work with thermviewer app on android phone or original one from iray, there it can show temperature and record videos/photos, without phone it cant, according to manual. In reviews it is called unique feature, monoculars are usually made not to measure temps but to make 0/1 decisions, even recording photos is not present in all of them. Also i stumbled across some flir hs-324 modification, it records 320*240 resolution photos and shows isotherm with temperature, never seen it sold and cant find saved pdf, it was called "rescuer" or somehow like that. Flir hs/ts series monoculars tau1 module has isotherms, maybe it can be configured to show it, didnt try with mine. Maybe there are monoculars for fire fighters that show temperature, check recent threads about them here.

author: frogg
author_rank: Regular Contributor
timestamp: September 08, 2021, 10:26:35 pm
content: I'd like to have one device to record video and measure temperature at range, and not have to buy multiple thermal devices to do this. Existing thermal sights/monoculars do 99% of what I want to do...I just want the extra 1%By Raw USB, I mean something exactly like you are saying: Thermviewer app or some kind of open source or third party app that I can use to analyze the video stream. It doesn't have to be Raw USB, it can be Wifi as well.I'll check out the Iray D13 - thanks for the info

author: svgurus
author_rank: Regular Contributor
timestamp: September 08, 2021, 11:58:05 pm
content: I saw this monocular IRL only once, was meeting a man that bought it out of interest but couldnt use with phone, looks like his android didnt have OTG) he said it accepts cr123 rechargeables but the viewfinder screen was really cheap and didnt hold low temperatures well, not unusual for that low price) but it has nice price/specs/size, hs/ts are about the same price and bigger, and maybe show temperature only while outputting analog video. btw, tau1 from flir ps-24 has isotherms too, it is really cheap now, maybe i will play with it next week if youre not in hurry

author: Bill W
author_rank: Super Contributor
timestamp: September 10, 2021, 12:27:30 pm
content: Quote from: frogg on September 08, 2021, 10:26:35 pmMay help if I explain the problem. Monocular cameras are generally narrow field of view so longer focal length lensesThose lenses in turn tend to be lower aperture.Those combined means the temperature of parts of the lens have a much greater effect on what the sensor *thinks* is the scene temperature while at the same time more chance that the lens is not at the temperature expected (as it sticks out too much.So the Argus P-Type does not offer spot temperature:https://res.cloudinary.com/iwh/image/upload/q_auto,g_center/assets/1/26/P-Type-datasheet.pdfNow it could and I can turn it on (same PCB set and software as Mi-Tic) but is wildly inaccurate especially with the larger lenses E and F as the assumption is lens temperature = shutter temperature.The accuracy is just about tolerable with the wide lenses B and C, +/-5°C and forget below 0°C.Bill