System and apparatus for sustaining process temperature measurement for RTD lead wire break

An apparatus for sustaining process temperature measurement with respect to a lead wire break, said apparatus comprising:

• a resistance temperature device comprising a plurality of lead wire arms including lead wire arms of a first lead wire type and a second lead wire type;
• and
• wherein a first lead wire type configuration automatically switches to a second lead wire type configuration in said resistance temperature device having said plurality of lead wire arms including said first lead wire type and said second lead wire type, if at least one wire break occurs in at least one arm of said plurality of lead wire arms of said resistance temperature device,
• wherein said resistance temperature device includes a controller that is electrically connected to a current source via a first switch and to a current sink via a second switch, and
• wherein said automatically switching from the first lead wire type configuration to the second lead wire type configuration includes 4 to 3, 3 to 2, 4 to 2, 2 to 4, 2 to 3, and 3 to 4 configurations based on said controller detecting a break in at least one wire arm of the plurality of wire arms.

An apparatus for sustaining process temperature measurement with respect to a lead wire break, said apparatus comprising:

• a resistance temperature device configured to comprise a plurality of lead wire arms including lead wire arms of a first lead wire type and a second lead wire type, wherein a first lead wire type configuration automatically switches to a second lead wire type configuration in said resistance temperature device having said plurality of lead wire arms including said first lead wire type and said second lead wire type, if at least one wire break occurs in at least one arm of said plurality of lead wire arms of said resistance temperature device;
• and
• a controller that is electrically connected to said plurality of lead wire arms and to a current source via a first switch and to a current sink via a second switch, wherein said controller assists in automatically switching from said first lead wire type configuration to said second lead wire type configuration,
• wherein said automatically switching from the first lead wire type configuration to the second lead wire type configuration includes 4 to 3, 3 to 2, 4 to 2, 2 to 4, 2 to 3, and 3 to 4 configurations based on said controller detecting a break in at least one wire arm of the plurality of wire arms.