Spectrum Controls 1769sc-IT6I - Manual (Page 59)

Appendix B: Using Thermocouple Junctions B-3
User’s Manual Pub. 0300244-01 Rev. A
Section B.3
Using an Exposed
Junction
Thermocouple
An exposed junction thermocouple uses a measuring junction that does not have a
protective metal sheath. A thermocouple with this junction type provides the fastest
response time but leaves thermocouple wires unprotected against corrosive or mechanical
damage.
As shown in the next illustration, using an exposed junction thermocouple can result in
removal of channel-to-channel isolation. Isolation is removed if multiple exposed
thermocouples are in direct contact with electrically conductive process material.
1769sc-IT6I