6 Annex
76
RTD temperature probe
Resistance transmitter and resistance/potentiometer
Designation Standard ITS Measuring range Accuracy
a
Measur-
ing cur-
rent
Pt50 IEC 751:2008 ITS-90 -200 to +850 °C ≤ 0.1 % 500 μA
Pt100 IEC 751:2008 ITS-90 -200 to +850 °C ≤ 0.1 % 500 μA
Pt500 IEC 751:2008 ITS-90 -200 to +850 °C ≤ 0.1 % 100 μA
Pt1000 IEC 751:2008 ITS-90 -200 to +850 °C ≤ 0.1 % 100 μA
Pt100 JIS C 1604-1981 ITPS-68 -200 to +649 °C ≤ 0.1 % 500 μA
Pt50 GOST 6651-2009 A.2 ITS-90 -200 to +850 °C ≤ 0.1 % 500 μA
Pt100 GOST 6651-2009 A.2 ITS-90 -200 to +850 °C ≤ 0.1 % 500 μA
Cu50 GOST 6651-2009 A.3 ITS-90 -180 to +200 °C ≤ 0.4 % 500 μA
Cu100 GOST 6651-2009 A.3 ITS-90 -180 to +200 °C ≤ 0.4 % 500 μA
Ni100 DIN 43760:1987-09 ITPS-68 -60 to +250 °C ≤ 0.2 % 500 μA
Ni100 GOST 6651-2009 A.5 ITS-90 -60 to +180 °C ≤ 0.2 % 500 μA
Connection type 2/3/4-wire
Ambient temperature influence ≤ 50 ppm/K
Smallest measuring span 15 K
Sensor line resistance Max. 10 Ω per cable for two-wire circuit
Max. 30 Ω per cable for three/four-wire circuit
Measuring range start/end Freely programmable within the limits, in increments of 0.1 K
a
Accuracy refers to the maximum measuring range. Small measuring spans lead to reduced linearization accuracy.
Designation Measuring range Accuracy
a
Measuring current
Resistance transmitter 0 to 4000 Ω≤0.1 % 100 μA
Resistance/potentiometer 0 to 400 Ω≤0.1 % 500 μA
0to4000Ω≤0.1 % 100 μA
Ambient temperature influence ≤ 100 ppm/K
Connection type
Resistance transmitter Three-wire circuit
Resistance/potentiometer Two/three/four-wire circuit
Smallest measuring span 60 Ω
Sensor line resistance Max. 10 Ω per cable for two-wire and three-wire circuits
Resistance values Freely programmable within the limits, in increments of 0.1 Ω
a
Accuracy refers to the maximum measuring range. Small measuring spans lead to reduced linearization accuracy.
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