BEAMEX MC5P - Connecting MC5 P and a HART Instrument; External Supply; Supply from the Calibrator

134
Appendix 1, User Guide for MC5 HART Option
Connecting MC5P and a HART Instru-
ment
How the HART instrument is connected to MC5P depends on the
supply power connection and whether there is a test diode con-
nected to the transmitter. The following pictures describe the con-
nections for each case.
Supply From the Calibrator
MC5P supplies the
transmitter and mea-
sures the output current.
The HART
®
terminal is
used for digital commu-
nication. MC5P auto-
matically includes the
required 270 ohm resis-
tor.
External Supply
MC5P measures the ex-
ternally supplied output
current of the transmit-
ter. The HART
®
terminal
is used for digital com-
munication. Remember
to make sure that the
loop also includes a re-
sistor with a resistance
between 230 to 600
ohm or that the imped-
ance of the loop itself is
at least 230 ohms.
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
ohm
250
Supply
etc.