Endress and Hauser’s ultrasonic level unit, the FMU90 can also be used to measure flow rates in open channels.
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| Flow rate measurement in open channels with flumes | |
| Features and Benefits • Up to 3 totalizers and 3 (resettable) counters; optionally resettable via digital inputs • Counting or time pulse output for control of external units • Simple, menu-guided operation with 6-line plain text display; 15 languages selectable • Envelope curves on the display for quick and simple diagnosis • Easy operation, diagnosis and measuring point documentation with the supplied Endress+Hauser operating program “FieldCare”. • Option: four digital inputs (e.g. for pump feedback) and one external temperature input • Time-of-flight correction via integrated or external temperature sensors • Linearisation (up to 32 points, freely configurable) • Linearisation tables for the most common flumes and weirs pre-programmed and selectable • Online calculation of the flume-/weir-flows via integrated flow curves • Pre-programmed pump control routines • System integration via HART or PROFIBUS DP • Automatic detection of the sensors FDU9x • The sensors of the series FDU8x can be connected (for certificates see note |
Application • Flow measurement in open channels and measuring weirs with 1 or 2 ultrasonic sensors • Simultaneous measurement of level and flow in a stormwater overflow basin with only 1 sensor • Flow measurement with back water detection (2 sensors) or sludge detection |
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