Basic Operation - WEBTEC CT15 Bedienungsanleitung

Basic operation

Flow Transducer
Flow Straightener Flow Straightener
Turbine
All CT flow meters work on the same basic theory - the fluid flow is used to rotate a turbine, the speed at which the
turbine rotates is proportional to the flow rate. This rotational speed is measured by a magnetic transducer counting the
axial turbine blades as they pass. The turbine blade is designed to minimise the effects of variations in temperature and
viscosity and built-in flow straighteners eliminate flow swirl and allow flow measurement in both directions. The on-board
electronics condition the signal and output a one of the three signals - pulse, voltage or current.
All flow meters are calibrated at 21 cSt as standard. Special calibration is available over a custom flow range or at a
different viscosity, please contact sales to discuss your application.
The flow transducer must not be removed from the flow meter body, the whole device is calibrated as an assembly and
will not function if dis-assembled. If the transducer has been accidentally unscrewed and replaced, the calibration will have
been affected and it is recommended the flow meter is returned for re-calibration.
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