Demien,
Firm OMEGA has type OS523 IR Thermometer to measure -28 TO 1370 ° C We use VANZETTY Mass. US IR thermometer with a few meters glass fibre . Light gide . 5000 $ sensor PbS with electronic shopper 1Hz to discharge the charge sensitive detector . For the experimenters : In anny CD drive you find IR sensors like SELENIDE TELURIDE sensors . Some LEDs are IR sensor material like InGaAs Intrusian IR sensor is SILICON FET with 10nm Ge filter. For stoves IR is too fansy and expensive ! The good old THERMOCOUPLE Ni/CrNi and Pt/PtRo is less combersome and spoiling NGO mony. Regards Frans
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