User guide

INSTALLATION INSTRUCTIONS, DOUBLE SUPPORT
1. Follow steps 1 through 4 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. Size the hole used for the double support according to Table 3.
Model / Sensor Weld Connector Drill Bit
ASF (7/8") 1/2" 1/2"
ASF1 (1-1/4") 1" 7/8"
ASF2 (2-1/4") 3" 2-3/4"
Table 3: Double support drill bit size
2. Weld the double support weld-o-let, making sure that it is centered with the drilled hole (1/16" weld gap recommended).
3. Install the ASF 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 ASF Ellipse in its fully inserted position, align the sensor head with the direction of ow as in step 7,
"Installation Instructions, Single Support" on page 5.
5. Check that the ASF Ellipse is in the correct orientation and spans the inside of the pipe. Tighten the compression nut
manually, the tighten it another 1-1/4 turns using a wrench.
6. Install the plug into the end of the double support weld-o-let. Tighten the plug to prevent leakage. Make sure that there is
no leakage in the system.
7. Follow steps 8 through 13 in "Installation Instructions, Single Support" on page 5.
TYPICAL INSTALLATION WITH DIFFERENTIAL PRESSURE TRANSMITTER
Horizontal Pipes
Vertical Pipes
PIPE
FILL HERE W/WATER
1/2" TUBING
3- or 5-VALVE
MANIFOLD
DP. TRANSMITTER
ELLIPSE
SENSOR
CROSS TEES
Figure 6: Typical installation
Ellipse® Pitot Tube Meter, ASF Annular Flanged Steam Meter
Page 6 April 2014