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Input
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Resistance measurement with constant current supply for 2- or 3-wire connections
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Digital converter resolution
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16- or 18-bit
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Conversion time
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Configurable for each channel
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Conversion procedure
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Sigma-delta
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Output format
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INT/DINT for temperature measurement
UINT for resistance measurement
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Sensor
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Sensor type
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Configurable per channel
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PT100
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-200 to 850°C
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PT1000
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-200 to 850°C
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Resistance measurement range
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0.01 to 600 Ω / 0.1 to 4800 Ω
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Resistance measurement resolution
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600 Ω: 0.01 Ω / 4800 Ω: 0.1 Ω
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Sensor standard
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EN 60751
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Isolation voltage between channel and bus
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1210 VDC
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Linearization method
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Internal
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Measuring current
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250 µA with Pt100 or 600 Ω
100 µA with Pt1000 or 4800 Ω
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Reference
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5000 Ω ±0.1%
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Permitted input signal
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Max. ±32 V
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Max. error at 25°C
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Gain
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Pt100 and 600 Ω: ±0.15% / Pt1000 and 4800 Ω: ±0.15%
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Offset
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Pt100 and 600 Ω: ±0.04% / Pt1000 and 4800 Ω: ±0.015%
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Max. gain drift
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Pt100 and 600 Ω: ±0.015 %/°C
Pt1000 and 4800 Ω: ±0.015 %/°C
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Max. offset drift
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Pt100 and 600 Ω: ±0.005 %/°C
Pt1000 and 4800 Ω: ±0.0015 %/°C
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Non-linearity
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<0.005%
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Standardized value range for resistance measurement
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600 Ω: 0.01 to 600.00 Ω / 4800 Ω: 0.1 to 4800.0 Ω
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Crosstalk between channels
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<-88 dB
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Temperature sensor resolution
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PT100
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1 LSB = 0.1 or 0.01°C
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PT1000
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1 LSB = 0.1 or 0.01°C
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Common-mode rejection
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50 Hz
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>96 dB
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DC
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>96 dB
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Temperature sensor standardization
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PT100
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INT: -200.0 to 850.0°C
DINT: -200.00 to 850.00°C
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PT1000
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INT: -200.0 to 850.0°C
DINT: -200.00 to 850.00°C
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Temperature measurement monitoring
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Range exceeded (neg.)
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0x8001
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Above upper range limit
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0x7FFF
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Open line
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0x7FFF
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General error
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0x8000
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Open inputs
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0x7FFF
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Resistance measurement monitoring
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Above upper range limit
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0xFFFF
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Open line
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0xFFFF
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General error
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0xFFFF
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Open inputs
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0xFFFF
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