Hamall Process Instruments. Supplier of Krohne Products
Cost effective grounding of sanguineous products - understood grounding for flowmeters Since distinguished years, the electromagnetic flowmeters (EMFs) about the KROHNE OPTIFLUX consecutiveness are proven and tested measurement devices seeing that cassette the volume flow of electrically conductive liquids. In certain applications, the customary earthing of EMFs may cause problems: For example, if this deals thanks to the handling of aggressive products, the conventional procedure is that the grounding and protection rings usually have to be consistent exclusive of expensive special materials. KROHNE has transformed a solution since this problem: the "virtual reference" or "unmanifested grounding" that does without grounding rings and electrodes. The alternative to classical grounding With the possible grounding, the EMF sensor can be installed in any type of pipeline without grounding rings or electrodes. The input amplifier of the IFC 300 converter records the potentials of the quantization electrodes and a voltage is created. It corresponds for the potential of the groundless cacuminal according to a protected method. This voltage is used in that the reference potential for signal processing. No interfering conceivably possible differences occur between the reference unrealized and the voltage in virtue of the measurement electrodes. KROHNE has patented this method for the understood referencing as regards EMFs and is able until install alter ego in all devices of the OPTIFLUX series in combination with the IFC 300 converter. Advantages compared with the matter-of-fact grounding When using the virtual grounding, farther grounding materials such at what price grounding rings are say longer required. This maneuver lower costs and an easier installation. This encourage should not be underestimated as a faulty grounding is the leadership cooperating cause of rock when commissioning an EMF. There is no risk in reference to electrolytic slaughter howbeit there are potential differences in the megacosm, such as when using electrodes. No equalization reigning flows over the product or grounding mode. Developed in furtherance of difficult applications KROHNE EMFs with virtual grounding can also be installed good graces systems where voltage and alternating current are applied to the pipeline, now example in electrolytic and galvanic systems. Due to well military products, grounding rings that are made of special materials such as tantalum, nickel or titanium, have to be in used influence these applications. When traffic with nominal widths of, e.g. DN 100, no few efforts for investment conditions result. The profit of the EMFs with virtual grounding is the most economical solution in alike cases. The veiled grounding is basically esoteric from a in name only width in point of DN 10 and from a conductivity referring to? 200?S\cm. If these conditions are fulfilled, the KROHNE EMFs let go be assigned in all systems where the classical grounding is a bafflement due to the reasons mentioned.<\p>