Inlet And Outlet Measurement Path - E+E Elektronik EE741 User Manual

4.3

Inlet and Outlet Measurement Path

For measurement accuracy according to product specification, the EE741 flow sensor shall be located as far as
possible from flow disturbances caused for instance by pipe reductions or expansions, bends, T pieces, valves or
sliders. This can be accomplished by observing a minimum inlet and outlet path length, which depends on both
the nature of disturbance and the pipe diameter. This applies to mounting the EE741 in the gauge mounting block
as well as in the gauge mounting block with flanges.
▪
The flow sensor shall be located before valves or sliders.
▪
With lighter gases the inlet paths need to be extended.
Outlet path
Types of pipes
Fig. 8 Optimal conditions for achieving the specified measuring accuracy
Flow Direction
Flow direction
Extension
Reduction
90° - elbow
Two 90° - elbows,
in one level
Two 90° - elbows,
in two levels, T-piece
Valve, slider
User Manual EE741
Pipe diameter (DN)
Inlet path
DN = Nominal Pipe Size
Inlet path Outlet path
15 x DN 5 x DN
15 x DN 5 x DN
20 x DN 5 x DN
25 x DN 5 x DN
30 x DN 5 x DN
50 x DN 5 x DN
Inline Flow Sensor for Compressed Air and Gases | 14