2.5.2 Conductive Pipeline
If the meter is included as part of a conductive pipeline that is not electrically insulated from the liquid
to be metered, the following grounding procedure should be followed. Refer to Figure 2-16 to
supplement the following text.
1) Drill and tap both pipeline flanges adjacent to the bonding connections on the meter.
The lugs on the bonding cables are sized for a 1/4 inch bolt (metric M6 fasteners).
2) Obtain a bright metal surface around the edges of the tapped hole with a file or emery
cloth.
3) Attach the bonding wire and another length of ground wire to the flanges as shown. Use
internal tooth lockwashers as shown in the detail. The wire to the good external ground
should be #12 AWG or heavier copper wire.
FIGURE 2-16. GROUNDING PROCEDURE; CONDUCTIVE PIPELINE
Figure is for reference only, the flowmeter shown in this illustration is not the meter
described in this instruction bulletin.
10DS3111E INSTRUCTION MANUAL
2-21
