Interface Level Measurement ( اندازه گیری سطح دو فازی ) Suitable measuring principales for your individual interface application |

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Multiparameter The name of the innovation in interface measurement is FMP55 Multiparameter. This instrument combines the advantages of the capacitance and guided radar measuring principles. Emulsion layers may cause signal losses in interface detection in guided radar measurements. Only Levelflex FMP55 Multiparameter can guarantee safe measured values for both the interface and the overall level with this unique, redundant measuring system. Applications up to 200°C /40 bar. |
Capacitance Media with a small dielectric constant (dc) cause very small changes of the capacitance value. Media with a high dc produce large capacitance changes. In many interface applications, the medium with the smaller dc value is on top, e.g. in hydrocarbon on water. The upper medium merely provides a minimum contribution to the overall capacitance value – the issued level thus only refers to the water level (the interface). Applications up to 200°C /100 bar. |
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Radiometry The gamma source emits radiation which is attenuated as it penetrates the container wall and the medium. On the opposite side of the container, a detector converts the radiation received into an electric signal. Different interfaces absorb the radiation differently. If the transmitter has been calibrated to the media by went calibration once, a correlation to the measurement of the interface result automatically, unaffected by process temperature and pressure. DDDDDDDDDDDDDDDDDDDDDD |
Guided Radar As the pulese impact the medium surface, only part of the sending pulse is reflected. The other part penetrates the medium. As the signal enters the lower medium with a higher dielectric constant (dc) it is reflected once more. Talking the delayed Time-of-Flight of the pulse through the upper medium into consideration the distance to the interface is determined in addition. Application up to 450°C/400 bar. DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD |