Tim Ganz
Member
I have to run a T/c to an oil tank on an existing machine, This will be to read the tank temp in the plc to set a high limit alarm and it will display the tank temp on the HMI.
I have to use existing conduit paths.
Option 1 Path would be 12 feet from the tank and would be T/C with built in transmitter giving out a 0-10 DC signal which would connect to a devicenet analog input block. Part of this conduit has wires for 1/2 motor at 120 ac as well as 120 Ac and 24 dc control wiring.
Option 2 path would be 35 feet from the tank and would be a plain T/C with T/C extension wire going through the same conduit described in option 1 but would land on a devicenet J type T/C input block. T/C extension wire would be twisted and shielded.
This is not good either way but there is no other choice. Which would produce the best result and which would be the lesser of 2 evils?
I have to use existing conduit paths.
Option 1 Path would be 12 feet from the tank and would be T/C with built in transmitter giving out a 0-10 DC signal which would connect to a devicenet analog input block. Part of this conduit has wires for 1/2 motor at 120 ac as well as 120 Ac and 24 dc control wiring.
Option 2 path would be 35 feet from the tank and would be a plain T/C with T/C extension wire going through the same conduit described in option 1 but would land on a devicenet J type T/C input block. T/C extension wire would be twisted and shielded.
This is not good either way but there is no other choice. Which would produce the best result and which would be the lesser of 2 evils?