Iv’e just had my 6×6x4′ three pase 415v oven supply connected. It’s controlled by an ERO electronic LMS pid with a Eurotherm 92 over temp monitor keeping guard each fed by their own unkown thermocouple. I’ve been experimenting with my laser gun temp an am soooooooooo confused EG I pre heated oven then placed part in oven left it a while then zapped it with gun then immediately removed part from oven by braving the devil like enferno stylee heat (dont try this at home kids eyeballs melt real quick real good ) and zapped part with lazer and found it was way lower when measured in ambient shop 64.4 f/18c so back in the devil box I go, but now armed with googles and rehang part then zap it with gun and it reads 374 f (interpon recomendation) so what I fiqure from my fool hardy test was even though the part (a chain sprocket) was in the oven and reading 374 it can be sumised that only the surface is at that temp but the overall to the core of the item is lower so does that matter? do you guy’s just start the timmer from the point from when your lazer reads the required temp even though the part may not be full cooked to the bone?