Badger Meter M-Series M2000 - Manual (Page 10)

Straight Pipe Requirements
Sufficient straight-pipe runs are required at the detector inlet and outlet for optimum meter accuracy and performance An
equivalent of three diameters of straight pipe is required on the inlet (upstream) side Two diameters are required on the outlet
(downstream) side
FORWARD FLOW
MINIMUM STRAIGHT PIPE MINIMUM STRAIGHT PIPE
ELBOW
TEE
GATE VALVE
(FULLY OPEN)
MINIMUM STRAIGHT PIPE
CHECK VALVE
GLOBE VALVE
BUTTERFLY VALVE
PUMP
ELBOW
TEE
ANY VALVE
FLOWMETER
3 x D
7 x D
2 x D
D (Pipe Size) D (Pipe Size)
MINIMUM PIPING REQUIREMENT
STANDARD CONCENTRIC
REDUCERS
(NO DISTANCE REQUIRED)
Figure 8: Straight Pipe Requirements
Pipe Reducer Requirements
With pipe reducers, a smaller meter can be mounted in larger pipelines This arrangement may increase low-flow accuracy
There are no special requirements for standard, concentric, pipe reducers
Custom fabricated pipe reducers must have an approximate slope angle of 15 degrees to minimize flow disturbances and
excessive loss of head If this is not possible, install the custom pipe reducers as if they were fittings and install the required
amount of straight pipe
Figure 9: Pipe Reducer Requirements
M-Series® M2000 Electromagnetic Flow Meter
Page 10 August 2012