22
Device Description
WAGO-I/O-SYSTEM 750
750-451 8 AI RTD
Manual
Version 1.1.0
3.6.4
Inputs
Table 10: Technical Data
‒ I
nputs
Number of inputs
8 (parameterizable)
Sensor types
Pt100 (IEC 751, default)
Pt200 (IEC 751)
Pt500 (IEC 751)
Pt1000 (IEC 751)
Ni100 (DIN 43760)
Ni120 (Minco)
Ni1000 (TK5000)
Ni1000 (TK6180, DIN 43760)
Resistance measurement 1
(0
Ω … 5000
Ω)
Resistance measurement 2
(0
Ω … 1200
Ω)
Connection types
2-wire
Measuring current
≤ 350 μA per measurement circuit
Conversion time
≤ 100 ms per channel
Resolution
16 bits
Temperature coefficient
≤ ±5 ppm/K
3.6.5
Measuring Accuracy at 25 °C
Table 11: Technical Data
‒ M
easuring Accuracy at 25 °C Ambient Temperature
Pt100 (IEC 751, default)
−200
°C… 850 °C
≤ ±0.6
K
Pt200 (IEC 751)
−200
°C … 850 °C
≤ ±0.5
K
Pt500 (IEC 751)
−200
°C … 850 °C
≤ ±0.3
K
Pt1000 (IEC 751)
−200
°C … 850 °C
≤ ±0.2
K
−50
°C … 150 °C
≤ ±0.2
K
Ni100 (DIN 43760)
−60
°C … 250 °C
≤ ±0.4
K
Ni120 (Minco)
−80
°C … 260 °C
≤ ±0.3
K
Ni1000 (TK5000, Landis & Staefa)
−60
°C … 250 °C
≤ ±0.2
K
−50
°C … 150 °C
≤ ±0.2
K
Ni1000 (TK6180, DIN 43760)
−60
°C … 250 °C
≤ ±0.2
K
−50
°C … 150 °C
≤ ±0.2
K
Resistance measurement 1
0
Ω … 5000
Ω
≤ ±0.3
Ω
Resistance measurement 2
0
Ω … 1200
Ω
≤ ±0.3
Ω
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