Temp
°C
Platinum TCR 0.00385 Nickel TCR 0.00618 Copper
TCR
0.00427
Pt 100 Pt 250 Ni 100 Ni 120 Ni 250 Cu 10
150 - - 198.6 238.32 496.5 -
160 161.04 402.6 206.6 247.92 516.5 15.217
180 168.46 421.15 223.2 267.84 558 -
200 175.84 439.6 240.7 288.84 601.75 -
3.13.2.10 RTD/mA input connection
RTD inputs can be used with a 2-wire or 3-wire connection with common ground.
When using the 3-wire connection, it is important that all three wires connecting the
sensor are symmetrical, that is, the wires are of the same type and length. Thus the
wire resistance is automatically compensated.
Figure 35: Three RTD/resistance sensors connected according to the 3-wire
connection
1MRS758755 C
Basic functions
REC615 & RER615
Technical Manual
105
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