9-2
Instruction and Operation Manual
X-CM-QmBS-eng
Part Number: 541B052AHG
June, 2008
Section 9 I/O Wiring DIN AN Transmitter
QmBS Sensor / QTA Transmitters
Figure 9-1 Basic mA Output Wiring
Figure 9-2 HART/Analog Single-Loop Wiring
820
Ω
maximum loop resistance
mA output
+
–
HART-compatible
host or controller
820
Ω
maximum loop resistance
For HART communications:
• 600
Ω
maximum loop resistance
• 250
Ω
minimum loop resistance
+
–
