Wiring A Flow Meter - Mettler Toledo IND780 Guide D'installation

Please consult the documentation for the specific flow meter you intend to use.
2.7.5.4.3. Microprocessor setup and programming
Jumpers J2 and W2 are for factory use only, during board manufacturing, setup and
programming. The operating position is open and no jumper is supplied.
Jumper W3 is a single on/off jumper used only by the factory during board manufacturing, setup
and programming. The operating position is open.
2.7.5.5.

Wiring a Flow Meter

An attached flow meter can be either isolated with respect to the Q.i output voltage, or it can be
non-isolated and share a common output voltage. The circuits in Figure 2-73 and Figure 2-74
illustrate these two methods of connecting a flow meter's pulse outputs to a Q.i flow meter interface
board.
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•
0.0 VAC – use the AC jumper selection
•
2.3 VDC – use the 5 BDC jumper selection
•
6.0 VDC – use the 12 VDC jumper selection
•
8.0 VDC – use the 24 VDC jumper selection
Figure 2-73: Isolated Flow Meter Connections
Figure 2-74: Non-Isolated Flow Meter Connections
METTLER TOLEDO IND780 Installation Guide
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