Dwyer UXF3 - Manual (Page 92)

-84-
5.2. Selection of mounting position
Detector mounting location, i.e., the conditions of the pipe subjected to flow rate measurement exert a great influence on
measurement accuracy. So select a location meeting the conditions listed below.
(1) Straight piping greater than 10D must exist on the upstream side and greater than 5D on the downstream side.
(2) Elements (pump, valve, etc) on the upstream side must be greater than 30D away to prevent disturbances.
(3) The piping must be filled with fluid free from air bubbles and foreign objects.
(4) Make sure that a maintenance space is provided around the piping where the sensor is mounted. (See Fig. 5-1.)
Note) A space should be provided so that maintenance work can be made with workers standing on both sides
of the piping.
D+1200(47.25) or more D
Note)
>600(23.62) Note)
>600(23.62)
D : Pipe diameter
Unit : mm(inch)
Fig. 5-1 Necessary space for the detector mounting position
CAUTION
(1) Mount the detector within ± 45 q from the center plane in the case of horizontal pipe run.
For a vertical pipe, the detector can be mounted at any position on the outer circumference.
Horizontal
Pipe
45
45
(2) Avoid installing the sensor on a deformed portion of pipe or welded portion of pipe, or on flange.
Welded part Flange or welded part Welded part
Bulletin F-107-UXF3
>200
(7.88)
>200
(7.88)
>2000
(78.74)