Dear Damien With a poit weld PLATINUM and PLATINUM-RHODIUM wire in a alumine giding rod with the point uncovered, you measure everything til 1800 °C . Instrumentation ampli of 3x 741 IC Chematic I can send you . Read out; any digital voltmeter in milli volts Or more expensive voltmeter FLUKE / SIEMENS with temperature measurement + ampli en cal all in ! Regards Frans
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