ML0035 September 27, 2017 - 92 - Copyright 2017 Bitronics, LLC
7.0 ANALOG TRANSDUCER OUTPUT OPTION
7.1 Introduction
The Transducer Output options (0 -1 mA or 4-20 mA) feature 3 separate outputs each
with two terminals, one of which is common to all three outputs and one which
provides a unique return path for each output.
7.2 Specifications
Outputs: 3 bi-directional, 0-1mA (active) or 4-20mA (loop powered, passive)
0 – 1mA Current Range
Output Range: 0 to +/-1mA into 10K ohms or less; Overload to
+/-2.1mA into 5K ohms or less.
Resolution: 0.22uA
Output Resistance: 500 ohm
4 – 20mA Current Range
Output Range: 4 to 20mA
Resolution: 1.1uA
Max Loop Voltage: 40Vdc
Max Voltage Drop: 2.3V @ 20mA
4 – 20mA Internal Loop Supply
Max Output Voltage: 6V @ 60mA,
Accuracy: 0.25% of Full Scale Input
Data Update Rate (poll rate): 100ms minimum
Input Capacitance, any Terminal to Case: 470pF
7.3 Connections
The connections for the 0-1 mA output option are shown in figure 10 while the
connections for the 4-20 mA with external and internal loop are shown in figure 11.
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