Quick-start instructions – Dynasonics Fusion Water Flow Meter User Manual
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QUICK-START INSTRUCTIONS
This manual contains detailed operating instructions for the
FUSION flow meter. The following condensed instructions are 
provided to assist an experienced operator in basic operation of 
the instrument. If the operator is unfamiliar with this type of 
instrument, refer to the detailed explanations located on pages 9-
32.
1. MOUNTING LOCATION Determine the proper mounting
location for the flow meter by referring to Figure 1 below.
The pipe must be completely filled with liquid while 
measurements are being made—avoid installations where 
pipes can become partially filled. (It is acceptable to have the 
pipe drain out when the pump or valve is turned off, so long 
as the pipe refills completely when the pump turns on or the 
valve opens.)
2. PLUMBING FUSION is equipped with an IN directional
arrow pointing in the flow direction that will produce positive 
readings with the FLO DIR set to POS. Mount the meter for 
best viewing of the display regardless of the flow direction; 
the direction can be changed in CONFIGURATION. The flow 
meter is equipped with NPT female threads. Apply pipe 
sealant or tape to mating components and tighten securely. 
For best accuracy, install a straight pipe nipple that is a 
minimum of 10 times the pipe ID immediately before the 
FUSION flow meter. It is recommended that a pipe union be 
utilized near the flow meter to facilitate easy removal of the 
meter for service.  
Figure 1 - Flow Meter Location
