PT100 thermal resistance temperature transmitter connection?1

PT100 thermal resistance temperature transmitter connection? This has two wire, three wire system and four wire system, identify types of corresponding thermal resistance of the lead in sex. Transmitter should be marked on: two wire is to identify the corresponding resistance of two pins, three-wire system resistance of a pin can be divided into two lines, four wire system is to identify the resistance of two pins with two root lead, and line 3 and line 4 is to eliminate error induced by lead.

if be pure PT100 thermal resistance, its input signals is the resistance value, then the common used three wire connection, namely one end to a line, pick up two wires at the other end.

if be PT100 temperature transmitter, is 4 - its input signal 20 ma signal, that is to use two wire system. Indirectly by two wires.

there is a solution: according to the circuit board wiring, sexual and non-polarity 24 v power supply level and multimeter series.