Hart communicator signal line connections, Hart communicator pc connections, Oxymitter 4000 – Emerson Process Management OXYMITTER 4000 IM-106-340 User Manual
Page 84
Oxymitter 4000
7-2
Instruction Manual
IM-106-340, Rev. 4.0
May 2006
HART COMMUNICATOR
SIGNAL LINE
CONNECTIONS
The HART Communicator can connect to the Oxymitter 4000's analog output
signal line at any wiring termination in the 4-20 mA current loop. There are
two methods of connecting the HART Communicator to the signal line. For
applications in which the signal line has a load resistance of 250 ohms or
more, refer to method 1. For applications in which the signal line load resis-
tance is less than 250 ohms, refer to method 2.
Method 1, For Load Resistance
≥
250 Ohms
Refer to Figure 7-1 and the following steps to connect the HART Communica-
tor to a signal line < 250 ohms or more of load resistance.
Using the supplied lead set, connect the HART Communicator in parallel with
to the Oxymitter 4000. Use any wiring termination points in the analog output
4-20 mA signal line.
Method 2, For Load Resistance < 250 ohms
Refer to Figure 7-2 and the following steps to connect the HART Communica-
tor to a signal line with < 250 ohms load resistance.
1. At a convenient point, break the analog output 4-20 mA signal line and
install the optional 250 ohm load resistor.
2. Plug the load resistor into the loop connectors (located on the rear panel
of the HART Communicator).
HART COMMUNICATOR
PC CONNECTIONS
There is an option to interface the HART Communicator with a personal com-
puter. Load the designated AMS software into the PC. Then link the HART
Communicator to the PC using the interface PC adapter that connects to the
serial port (on the communicator rear panel).
Refer to the proper HART Communicator documentation in regard to the PC
interface option.
Explosions can result in death or serious injury. Do not make connections to the HART
Communicator's serial port, 4-20 mV signal line, or NiCad recharger jack in an explosive
atmosphere.
Explosions can result in death or serious injury. Do not make connections to the HART
Communicator's serial port, 4-20 mV signal line, or NiCad recharger jack in an explosive
atmosphere.