PCB mount thermocouple socket
the thing to consider with thermocouple interconnections is that each additional disparate metal type junction you include in the circuit may introduce error.

while looking for PCB connector options like you were, I came across this thread, which describes, for example, the benefit of K-type over J-type when connecting to copper PCB traces.  have a read:  http://www.nerdkits.com/forum/thread/2779/

any given connector you consider will have some combination of metals, &amp; not just the core metal, but also the plating, if any (gold, tin, etc).

i also stumbled across these people selling PCB-mounting thermocouple connectors, with varieties for each thermocouple type:
https://www.labfacility.com/pcb-mounting-thermocouple-socket-iec-p168-pg71/

Anthony.