Tek-LCD 7805B
Technology Solutions
4. Mounting
5. Power Connections
The Tek-LCD 7805B has two slotted mounting flanges that may be used for pipe mounting or wall mounting.
Alternatively, the unit may be supported by the conduit using the conduit holes provided.
Do not attempt to loosen or remove flange bolts while the meter is in service.
Signal connections are made to a three-terminal connector mounted on the rear of the display module. The
enclosure also provides one internal and one external earth grounding screw. The 4-20 mA input with no
backlight has a maximum voltage drop of 1 V and is wired as shown in Figure 2. The loop-powered backlight
configuration requires a total maximum voltage drop of 4 V. The backlight option is recommended for dim
lighting conditions and is enabled when wired as shown in Figure 3.
Fig. 1 Connector Board
Connections & Wiring Diagrams
