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promesstec GmbH
I Niedersachsenstraße 4 I D-48465 Schüttorf I Tel.:+49 (0)5923/ 90 229 0 I Fax:+49 (0)5923/ 90 229 29
E-Mail: [email protected] I Internet: www.promesstec.com
4.4.6 Installation in pipeline
The inductive flow sensor is installed in arbitrary position in vertical piping. In case
of horizontal piping, it is necessary to make sure that the sensor is installed with its
measuring electrodes in horizontal position. In case of the earthing electrode design,
possibly with testing for empty pipeline, then the installation is always performed
with the earthing reference electrode facing down (with the sensor terminal box,
eventually with the evaluation unit facing upwards). Then the earthing reference
electrode is in the bottom position and the empty tube sensing electrode is in the
top position of the flow sensor.
Every time when the empty tube testing electrode is not covered with a liquid for
5sec at least, the flow meter will display the "Empty tube" status, and if it is neces-
sary, it sends out an error message and stops taking measurement. The measure-
ment accuracy is maintained in this way. Once the electrode is covered with the
liquid again, the error message disappears and the flow meter starts taking meas-
urement again.
Installation in piping and placement of measuring electrodes in flow sensor.