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The FDU90 ultrasonic sensor for continuous, non-contact and maintenance-free level measurement of fluids, pastes, sludges and powdery to coarse bulk materials. But also for flow measurement in open ch
The FDU90 ultrasonic sensor for continuous, non-contact and maintenance-free level measurement of fluids, pastes, sludges and powdery to coarse bulk materials. But also for flow measurement in open channels and measuring weirs. The measurement is unaffected by dielectric constant, density or humidity and also unaffected by build-up due to the self-cleaning effect of sensors. Suited for explosion hazardous areas. Maximum measuring range in liquids 3m (9.8ft), solids 1.2m (3.9ft).
| Measuring Principle | Ultrasonic |
| Product headline | Version with separate transmitter in field housing or top hat rail housing |
| Cost effective solution for open channel flow measurement in water / wastewater plants | |
| Max. measured error | accuracy: |
| distance measurement: +/- 2mm + 0.17% | |
| resolution: | |
| distance measurement: 1m | |
| Measuring range | max measuring distance up to 3 m / 9.8 ft |
| Max. process pressure | atm. |
| Medium temperature range | -40 °C ... 80 °C |
| (-40 °F ... 176 °F) | |
| Degree of protection | IP68 |
| Display/Operation | Transmitter |
| Outputs | Transmitter: |
| 4 ... 20 mA HART | |
| PROFIBUS DP | |
| Inputs | Transmitter |
| Digital communication | HART, PROFIBUS DP |
| Hazardous area approvals | ATEX, IECEx, FM, CSA |
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