ok....
'ow about this?
Your WPS states preheat of 200 degree C and interpass of 300 degree C
According to what I keep reading in this forum, when making (for example) layer 5 or 6 in joint your interpass must be between 200 and 300 degrees C, right?
Inspector Gadget then measure 205 degree C as 'interpass' and gives a green light to weld, I guess I am correct this far?
Where does Inspector Gadget measure this temperature? yeah, at the latest layer welded, right? or very close to - as it should.
How about the temperature 3 inches away from the groove, which temperature is the steel there?
3.2