Compu-Flow™ EXM MAG
INSTALLATION:
Installation of (Hot Tap) EXM 110 thru 136: (cont.)
If possible, measure the wall thickness and write it down for use in depth
setting. Then install the threaded fitting (saddle, weldolet, etc.) on the pipe.
If it is necessary to do the initial installation under pressure, any standard
hot tap drilling machine with 2” NPT adapter, such as a Transmate or a
Mueller, can be used. Ordinarily, it is not necessary to use an installation
tool, due to the small diameter tube the meter can be installed by hand at
all but the highest pressures.
Meter Installation. Remo e the sensor unit from the
al e assembly. Using a thread sealant, install the al e
assembly on the pipe fitting. If the initial installation is a
pressure (“hot”) tap, remo e the 1-1/2” x 2” adapter
bushing at the back of the al e. Thread the tapping
machine on, open the al e, and tap using a minimum of
1-3/4” or maximum 1-7/8” cutter. After retracting the
machine and closing the al e, reinstall the flow sensor.
When the sensor is secure, open the al e and adjust
Be sure flow is in the direction of the arrow on the
housing. Tighten fitting and compression nut fully.
Depth Setting. It is important for accuracy
that the sensor be inserted to the correct
depth into the pipe.
1. Take dimension from reference point (joint
in the housing) up to the tip of sensor.
2. From this whole dimension, subtract
10% of pipe I.D., and pipe thickness, to
obtain dimension “D”.
3. Measuring from the outside of the pipe to
the joint in the housing, as shown in the
diagram, adjust the sensor to Dimension D
and hand-tighten compression nut.
3. Align the conduit housing with the
centerline of the pipe. Be sure the arrow
on the housing points in the direction
of flow.
8
Flow
Flow
