4-20 Ma Input Connections; Figure 3. Li25 Input Connections With Backlight; Figure 4. Li25 Input Connections Without Backlight - FlowLine LI25 Series Instruction Manual

LI25 Series Loop-Powered Meters

4-20 mA Input Connections

Input connections are made to a four-terminal connector labeled
S+|S-|B+|B-. The loop-powered backlight is an optional configuration and
requires a total maximum voltage drop of 5.7 V. The backlight is
recommended for dim lighting conditions and is enabled when wired as
shown in Figure 3. It may be bypassed if installed in bright lighting
conditions to reduce the maximum voltage drop to 2.0 V as shown in
Figure 4.
Power
Supply
Figure 3. Input Connections with Backlight
Power
Supply
Figure 4. Input Connections without Backlight
4-20 mA
Transmitter
4-20 mA
Transmitter
12
Instruction Manual
S+ S- B+ B-
S+ S- B+ B-