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Input
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Resistance measurement with constant current supply for 4-wire connections
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Digital converter resolution
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24-bit
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Filter time
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Configurable between 1 ms and 400 ms
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Conversion time
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1000 Hz filter
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1 ms for all inputs
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50 Hz filter
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20 ms for all inputs
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Conversion procedure
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Sigma-delta
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Output format
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DINT or UDINT for resistance measurement
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Temperature measurement range
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-200 to 850°C
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Resistance measurement range
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0.5 to 390 Ω
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Temperature sensor resolution
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1 LSB = 0.001°C
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Resistance measurement resolution
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0.001 Ω
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Input filter
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First-order low-pass filter / cutoff frequency 1050 Hz
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Sensor standard
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EN 60751
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Insulation voltage between channel and bus
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500 Veff
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Insulation voltage between channel and channel
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500 Veff
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Linearization method
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Internal
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Measurement current
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1 mA
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Temperature sensor normalization
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-200.0 to 850.0°C
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Reference
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1568 Ω ±0.1%
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Permissible input signal
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Short-term max. 28.8 V
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Max. error at 25°C
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Gain
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0.0059%
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Offset
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0.0015%
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Max. gain drift
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<0.00065%/°C
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Max. offset drift
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<0.000025%/°C
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Nonlinearity
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<0.001%
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Standardized range of values for resistance measurement
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0.5 Ω to 390 Ω
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Temperature measurement monitoring
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Range undershoot
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0x80000001
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Range overshoot
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0x7FFFFFFF
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Open circuit
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0x7FFFFFFF
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General fault
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0x80000000
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Open inputs
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0x7FFFFFFF
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Resistance measurement monitoring
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Range undershoot
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0x80000001
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Range overshoot
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0xFFFFFFFF
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Open circuit
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0xFFFFFFFF
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General fault
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0x80000000
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