Omega Speaker Systems FMG3000 manual Installation Pipe fittings, Selecting a Location

3. Installation: Pipe fittings

Omega offers a wide selection of installation fi ttings that control the position of the Magmeter electrodes in relation to the dimensions of the pipe. You will fi nd a complete list of order numbers for installation fi ttings in the Calibration tables on pages 9-13.

Type	Description
Plastic tees	0.5 to 4 inch versions
	PVC or CPVC
Metric	For pipes from DN 15 to 50 mm
Union
	PP or PVDF
Fitting
PVC	2 to 4 inch, cut 1-7/16 inch hole in pipe
Saddles	6 to 8 inch, cut 2-1/8 inch hole in pipe
Iron	2 to 4 inch, cut 1-7/16 inch hole in pipe
Strap-on	Over 4 inch, cut 2-1/8 inch hole in pipe
saddles

Type	Description
Iron, Carbon Steel,	0.5 to 2 in. versions
316 SS Threaded	Mounts on threaded pipe ends
tees
Carbon steel &	2 to 4 inch, cut 1-7/16 inch hole in pipe
stainless steel	Over 4 inch, cut 2-1/8 inch hole in pipe
Weld-on
Weldolets
Fiberglass	1.5 in. to 8 in. PVDF insert
tees &
	> 8 in. PVC insert
saddles:
FPT	FPS
Metric	For pipes DN 65 to 200 mm
Wafer Fitting	PP or PVDF

4. Selecting a Location

•The FMG-3000 requires a full pipe and a fully developed turbulent fl ow profi le for accurate measurement.

•If the piping system harbors air pockets or bubbles, take steps to locate the sensor so the air pockets will not contact the electrodes.

•In vertical installations, assemble the unit so the conduit ports are facing downward. This prevents condensation inside the conduit from being directed into the electronics housing.

Select a location with sufficient distance of straight pipe immediately upstream of the sensor.

Inlet	Outlet
Flange		Reducer			90° Elbow
10 x I.D.	5 x I.D.	15 x I.D.		5 x I.D.	20 x I.D.	5 x I.D.
		2 x 90° Elbow
2 x 90° Elbow		3 dimensions	GF		Valve/Pump	+ +
25 x I.D.	5 x I.D.	40 x I.D.		5 x I.D.	50 x I.D.	5 x I.D.

Locating the sensor in a trap or where the

flow is upward helps to protect the sensor from exposure to air bubbles when the system is in operation.

NOTE: The system must be designed to keep the sensor wet at all times.

O.K. O.K. O.K.

+ +

Vertical flow is OK IF the pipe remains full at all times.

These confi gurations are not recommended because it is difficult to keep the pipe full.

+GF+

In a gravity-fl ow system, the tank must be designed so the level does not drop below the outlet.

This causes the pipe to draw air in from the tank.

If air bubbles pass across the Magmeter electrodes, the output will become erratic.

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