Can PTC and NTC probes be extended?
PTC and NTC probes can be extended but a few precautions should be observed as follows: (1) the maximum advisable distance is approximately 100 metres. (2) always use good quality low resistance cable with a large cross sectional area. This will minimize any additional resistance from being imparted, which could effect a controller’s accuracy.(3) on long runs, use screened cable and only earth one end of the screen. (4) do not run probe cables alongside power cables.
