24 Device Description
WAGO-I/O-SYSTEM 750
750-450 4 AI RTD
Manual
Version 1.2.0
3.6.4
Inputs
Table 14: Technical Data – Inputs
Number of inputs
4 (parameterizable)
Sensor types
Pt100 (IEC 751)*,
Ni100 (DIN 43760),
Pt1000 (IEC 751),
Pt500 (IEC 751),
Pt200 (IEC 751),
Ni120 (Minco),
Ni1000 (TK6180, DIN 43760),
Ni1000 (TK5000),
Potentiometer (R
max
= 5000 Ω),
Resistance measurement 1 (0 Ω … 5000 Ω),
Resistance measurement 2 (0 Ω … 1200 Ω)
Connection types
2/3/4 wires
Measuring current
≤
350 μA per measuring circuit
Conversion time
2-/4-wire
3-wire
≤
100 ms per channel
≤
200 ms per channel
Resolution
16 bits
Temperature coefficient
≤ ±5 ppm/K
* Default
3.6.5
Measuring Accuracy at 25°C
Table 15: Technical Data – Measuring Accuracy at 25°C Ambient Air Temperature, 2 Wires
Pt100 (IEC 751)
−200 °C… 850 °*C
≤ ±0.6 K
−50 °C… 150 °*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
* Default