4-30
1010GCNFM-3C
Section 4
Using ReversaMatic
If site conditions do not permit stopping the flow rate at the mounting location, and Reflect Mount is not
possible, then use the ReversaMatic routine to establish the zero flow level.
To invoke ReversaMatic:
z To access the [Zero Flow Adjust] option list press
z Move the cursor to [ReversaMatic]. Press to invoke the routine.
z The meter begins to measure the positive flow rate. “Positive” flow refers to flow moving from up-
stream transducer location to the downstream transducer location. Note top prompt line shows:
Reversamatic Action
z Upon completion, the meter beeps and the display screen shows:
Reverse Xdcrs / Press ENT
z Now remove then remount the upstream and downstream transducers in their reversed positions.
Mount the Up transducer (without removing its cable) in the Down transducer/cable location. Mount
Down transducer with its cable in the Up transducer/cable location. When remounting the transduc-
ers, couple them to the pipe properly. Press <ENT> (after re-installing the transducers).
z The flow computer measures the negative flow rate briefly, then beeps and repeats the
Reverse Xdcrs / Press ENT prompt.
z Now remount the transducers for normal operation (in their original orientation). When remounting
transducers, couple them to the pipe properly. Press <ENT> (after re-installing the transducers).
This completes the ReversaMatic procedure. The system’s zero accuracy will be very close to that obtain-
able using the Actual Zero method, providing flow remained constant during this procedure.
ENT
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