Instruction Manual
IM-106-910C, Rev. 1.0
November 2009
4-11
Hazardous Area
X-STREAM O
2
Transmitter
Figure 4-3. Signal Line Connections,
≥
250 Ohms Load Resistance
Using the supplied lead set, connect the 375 Field Communicator in parallel
with the X-STREAM. Use any wiring termination points in the analog output
4-20 mA signal line.
The 375 Field Communicator may also be connected directly to the
transmitter electronics board. Refer to Figure 4-4 for connecting the 375 Field
Communicator at the H1 and H2 terminals on the O
2
transmitter electronics
board. The AM+ and AM- test points shown in Figure 4-4 are provided to
monitor the 4-20 mA signal without breaking into the loop.
Signals are not intrinsically safe. In an explosive atmosphere do not make connections to
the 375 Field Communicator’s serial port, 4-20 mA signal line, or NiCad recharger jack.
