Badger Meter AHS - Hot Tap, Steam (2 to 24")" - Manual (Page 6)

INSTALLATION INSTRUCTIONS, DOUBLE SUPPORT
1 . Follow steps 1 through 7 in “Installation Instructions, Single Support” on page 5 . At 180° from and on the same plane
as the previously drilled hole, grind the surface of the pipe to provide a clean area for welding . Drill a hole and deburr,
especially on the inside of the pipe . The hole used for the double support should be sized according to
Table 3 on page 6 .
2 . Weld the double support weld-o-let making sure that it is centered with the drilled hole (1/16" weld gap recommended) .
Model / Sensor Weld Connector Drill Bit
AHS (7/8") 1-1/4" 1-1/8"
AHS1 (1-1/4") 1-1/2" 1-3/8"
Table 3: Double support drill bit size
3 . Install the AHS Ellipse sensor through the two holes . Make sure that the double support pin passes through the guide ring .
See Figure 5 .
Ellipse Sensor
Double Support Pin
Guide Ring
Figure 5: Double Support Pin
4 . While holding the AHS Ellipse in its fully inserted position, align the sensor head with the direction of flow as in step 7,
“Installation Instructions, Single Support” on page 5 .
5 . Ensure that the AHS Ellipse is in the correct orientation and spans the inside of the pipe . Tighten the compression nut .
After tightening the compression nut manually, tighten it 1-1/4 turns more using a wrench .
6 . Install the plug into the end of the double support weld-o-let . Tighten the plug to prevent leakage . Ensure that there is no
leakage in the system .
7 . Follow steps 11 through 14 in “Installation Instructions, Single Support” on page 5 .
TYPICAL INSTALLATION WITH DIFFERENTIAL PRESSURE TRANSMITTER
Horizontal Pipes Vertical Pipes
Ellipse
Sensor
Cross Tees
Pipe
Fill here
with water
1/2" Tubing
3- or 5-Valve
Manifold
DP Transmitter
Figure 6: Installation with differential pressure transmitter
Ellipse® Pitot Tube Meter, AHS Annular Threaded Hot Tap Steam Meter
Page 6 April 2014