Emerson Micro Motion 4200 Instruction Manual page 26

Wiring the channels
March 2024
Table 3-2: For maximum loop resistance for Channel A
Condition
17.75 V < Vs < 19.6 V
19.6 V < Vs < 21.5 V
21.5 V < Vs < 30 V
Note
If display backlighting is enabled (refer to
input voltage required is 1V higher than the chart indicates.
Channel B mA terminal requirements
Use the following chart to determine the required supply voltage for Channel B mA based
on loop resistance.
Note
Remember when using the second configurable output (Channel B), all power to the
electronics is still supplied over the primary 4 - 20 mA signal wiring (Channel A).
Figure 3-2: Channel B output supply voltage and loop resistance
A. Loop resistance (Ohms)
B. Supply voltage (Vs)
C. Maximum loop resistance (Ohms)
26
Equation
(Vs-17.75)/3.6mA
(Vs-8.32V)/22mA
600 Ohms
Configure the display backlight), the minimum
Micro Motion 4200 2-Wire Transmitter
Installation Manual
MMI-20058013