How can I use a 2 or 4-wire PT100 probe with a West controller designed for 3-wire probes? Below is based on connecting to a West 8100, 4100 4400 control. The informa Tags Controllers General Technical Information West 4100/6100/8100 Series Original N Series Newer P Series West EC44 Control West 2800/3800 Series West 5010 Series West/ Partlow MLC Series West 4400 Series Sensors Thermocouples & RTD's Read more about How can I use a 2 or 4-wire PT100 probe with a West controller designed for 3-wire probes?