Veris Verabar V100 - Manual (Page 3)

5.2 Weld Threadolet to Pipe
•
Loosely assemble the sensor, compression nut,
back ferrule, front ferrule and compression body to
the threadolet (hand tight) and insert the sensor
assembly into the pipe. The back ferrule and front
ferrule must be in the proper sequence and
orientation as shown in Figure 2.
•
Using the appropriate weld gap (1/16” [1.5mm]
typical), tack weld the threadolet into position
(Figure 3).
Figure 3. Weld Gap
•
Remove the sensor, protect threads on the
threadolet and finish welding the threadolet to the
pipe per applicable piping codes.
5.3 Insert Sensor
•
Using appropriate pipe thread sealant, install
(completely tighten) the compression body into the
threadolet.
•
Slide the compression nut, back ferrule, then front
ferrule, onto the sensor cover tube. The back
ferrule and front ferrule must be in the proper
sequence and orientation as shown in Figure
2. The back ferrule must be next to the
compression nut with the tapered end pointing
toward the front ferrule. The tapered end of the
front ferrule must point towards the compression
body.
•
Slide the sensor, with compression nut and
ferrules attached, into the compression body (do
not tighten).
•
Align the head of the sensor so that the arrow
labeled “flow” on the head is in the direction of the
flow in the pipe to within 3° (Figure 4). Maintain
the head in this position for the remainder of the
operations.
•
While pushing the sensor against the opposite
wall with a force of at least 50 lbs (22kg),
tighten the compression nut 1-1/4 turns past
hand tight. This prevents vibration caused by the
end of the probe lifting off the opposite wall of the
pipe. A come-along, band clamp or strap wrench
may be used for this operation.
•
Reverify the alignment of the sensor such that the
arrow labeled “flow” on the head is in the direction
of the flow in the pipe to within 3° (Figure 4). A
crescent wrench or pipe wrench can be applied to
the head of the sensor to make alignment
adjustments.
Figure 4. Orientation of Flow Arrow