BEAMEX MC5P - Current Measurement Parallel to a Test Diode, Connections

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Current Measurement Parallel to a Test Diode, Connections
The impedance of MC5P’s milliampere input is low enough to enable current measure-
ment parallel to a test diode in a 20 mA circuit. Connections:
Plus Side Test Diode Minus Side Test Diode
MC5P parallels the test diode of the transmitter and measures the
externally supplied output current of the transmitter. For more infor-
mation concerning test diode connections of HART instruments,
see Appendix 1, chapter Connecting MC5P and a HART Instru-
ment on page 138.
Note.
In higher temperatures: The leakage of the diode in the instrument
may affect the accuracy.
S/N
MEASURE
+24V
I
meas/sink
HART
®
2-w xmtr
V, ,
Low V
Com
Max 60 VDC
Max 30 VAC
+
I
Input
signal
X
+
-
S/N
MEASURE
+24V
I
meas/sink
HART
®
2-w xmtr
V, ,
Low V
Com
Max 60 VDC
Max 30 VAC
+
I
Input
signal
X
+
-
Additional Information