MAN0927-03 PAGE 3 Thermocouple module
3
WIRING
Grounded thermocouples wiring options
Field ground potential less than 7V AC. Shields connected at one end only may be used to reduce noise.
Ungrounded thermocouples wiring options
Preferred shield connection
Alternate shield connection
Ungrounded thermocouples should have one side tied to isolated common to reduce noise pickup.
Grounded thermocouples may use type 3 or 4 shield connections if shield is not grounded at field end.
Type 1
Type 2
Type 3
Type 4
< 7VAC
< 7VAC
