| 摘要 |
A level transmitter (7) for use in a process application measures the height of a product level in a container, e.g. in a tank (8). The level transmitter includes an electromagnetic wave antenna (4) directed into the tank. An electromagnetic wave source sends an electromagnetic wave signal (9) through the electromagnetic wave antenna. An electromagnetic wave receiver receives the reflected electromagnetic wave signal (10). Measurement circuitry couple d to the source and receiver initiates transmitting of the electromagnetic wav e signal and determines product level height based upon the received, reflecte d signal. Output circuitry transmits information related to product height. Th e device is suitable for use with containers having very small orifices (11) f or antenna insertion.
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