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Input
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Resistance measurement with constant current supply for 2-wire connections
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Digital converter resolution
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16-bit
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Filter time
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Configurable between 16.7 and 66.7 ms
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Conversion time
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1 channel
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20 ms with 50 Hz filter
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2 - 4 channels
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40 ms per channel with 50 Hz filter
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Conversion procedure
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Sigma-delta
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Output format
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INT or 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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NTC10K type 1
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Vishay: NTCLE100E3103GB0, B25/85 = 3977
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NTC10K type 2
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Vishay: NTCLE413E2103F400L, B25/85 = 3435
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Temperature measurement range
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-30 to 100°C for NTC with 10 kΩ
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Resistance measurement range
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0 to 200 kΩ
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Temperature sensor resolution
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1 LSB = 0.1°C for NTC with 10 kΩ
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Resistance measurement resolution
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5 Ω
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Input filter
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First-order low-pass filter / cutoff frequency 1.35 kHz
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Insulation voltage between channel and bus
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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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9.1 µA ±1.5%
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Reference
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103,125 Ω ±0.1%
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Permissible input signal
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Short-term max. ±30 V
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Max. error at 25°C
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Gain
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0.35%
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Offset
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0.004%
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Max. gain drift
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0.006%/°C
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Max. offset drift
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0.00009 %/°C
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Nonlinearity
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<0.15%
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Standardized range of values for resistance measurement
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0 to 200,000 Ω
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Crosstalk between channels
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<-70 dB
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Temperature sensor normalization
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NTC10K type 1
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-30.0 to 100.0°C
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NTC10K type 2
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-30.0 to 100.0°C
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Temperature measurement monitoring
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Range undershoot
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0x8001
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Range overshoot
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0x7FFF
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Open circuit
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0x7FFF
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General fault
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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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Range overshoot
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0xFFFF
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Open circuit
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0xFFFF
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General fault
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0xFFFF
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Open inputs
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0xFFFF
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