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General information
Product type designation 4AI I 4WIRE HART
Input current
Current consumption, typ. 27 mA
from supply voltage L+, max. 30 mA
Power loss
Power loss, typ. 0.4 W
Analog inputs
Number of analog inputs 4
permissible input current for current input (destruction limit),
max.
50 mA
Cycle time (all channels) max. 120 ms; 30 ms basic conversion time x4 channels with 60 Hz, 50 Hz
interference frequency suppression
Technical unit for temperature measurement adjustable Yes
Input ranges (rated values), currents
● 4 mA to 20 mA Yes
— Input resistance (4 mA to 20 mA) 295 Ω
Cable length
● shielded, max. 500 m
Analog value generation for the inputs
Measurement principle integrating (Sigma-Delta)
Integration and conversion time/resolution per channel
● Resolution with overrange (bit including sign), max. 12 bit; + sign
● Integration time, parameterizable Yes
● Basic conversion time, including integration time (ms) 30 ms
● Interference voltage suppression for interference
frequency f1 in Hz
50 / 60 Hz
Smoothing of measured values
● parameterizable Yes; in 4 stages
● Step: None Yes; 1x cycle time
● Step: low Yes; 4x cycle time
● Step: Medium Yes; 32x cycle time
● Step: High Yes; 64x cycle time
Encoder
Connection of signal encoders
● for current measurement as 4-wire transducer Yes
Errors/accuracies
Linearity error (relative to input range), (+/-) 0.015 %
Temperature error (relative to input range), (+/-) 0.005 %/K
Crosstalk between the inputs, min. -50 dB