Veris Industries SDI SERIES Install - Manual (Page 5)

44 5
Display Options-
All models except the standard frequency output version may also be equipped with a display. Integrated into the
NEMA 4 housing, the 8 digit LCD may be programmed to show rate of flow, flow total or toggle between the two. Bi-
directional models also show flow direction.
Mechanical Installation
The accuracy of flow measurement for all insert type flow measuring devices is highly dependent on proper location
of the sensor in the piping system. Irregular flow velocity profiles caused by valves, fittings, pipe bends, etc. can lead
to inaccurate overall flow rate indications even though local flow velocity measurement may be accurate. A sensor
located in the pipe that is partially full or where it can be affected by air bubbles, floating debris, or sediment may not
achieve full accuracy and could be damaged.
Data Industrial flow sensors are designed to operate reliably under adverse conditions, but the following
recommendations should be followed to ensure maximum system accuracy:
1) Choose a location along the pipe where there is straight pipe for a distance of 10 pipe diameters upstream and 5
pipe diameters downstream of the sensor. Pipe bends, valves, other fittings, pipe enlargements and reductions or
anything else that would cause a flow disturbance should not be present in this length of pipe.
2) The recommended tap location around the circumference of a horizontal pipe is on top. If trapped air or debris will
interfere, then the sensor should be located around the pipe from the top preferably not more than 45 degrees
from top dead center. The sensor should never be located at the bottom of the pipe, as sediment may collect
there. Locations off top dead center cause the impeller friction to increase, which may affect performance at low
flow rates. Any circumferential location is correct for installation in vertical pipes.
5 x Pipe Dia
DATA INDUSTRIAL
SDI Series Sensor
10 x Pipe Dia
FLOW