VorTek U44 Series, Instruction Manual

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Series U44 Instruction Manual
M-000-00090
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2.4.3 V Method
The V method is considered as the standard method. It is convenient to use, but still requires proper
installation of the transducers, contact on the pipe at the pipe’s centerline, and equal spacing on either side of
the centerline.
2.4.4 Z Method
The signal transmitted in a Z method installation has less attenuation than a signal transmitted with the V
method.
When the pipes are too large, there are some suspended solids in the fluid or the scaling and liner are too
thick. The Z method utilizes a directly transmitted (rather than reflected) signaling which transverses the
liquid only once. The Z method is able to measure on pipe diameters ranging from 100mm to 1200mm (4
inch to 48 inch) approximately. Therefore, we recommend the Z method for pipe diameters over 300mm (12
inch).
2.5 Transducer Mounting Inspection
2.5.1 Signal Strength
Signal strength (displayed in the Diagnostics Menu) indicates a detected strength of the signal both from
upstream and downstream directions. The relevant signal strength is indicated by numbers from 00.0 ~ 99.9.
The 00.0 value represents no signal detected while 99.9 represent maximum signal strength. Normally, the
stronger the signal strength detected, the longer the operation of the instrument is reliable, as well as the
more stable the obtained measurement value.