Sertech001@gmail.com
The FDU91 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 FDU91 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 10m (33ft), solids 5m (16ft).
| Measuring Principle | Ultrasonic |
| Characteristic / Application | Separated version with field housing or top hat rail housing for control cabinet instrumentation, 300m in-between sensor and transmitter |
| Supply / Communication | 4-wire (HART, Profibus DP) |
| Accuracy | +/- 2mm + 0.17% of measured distance |
| Ambient temperature | -40 °C ... 80 °C |
| (-40 °F ... 176 °F) | |
| Process temperature | -40 °C ... 80 °C |
| (-40 °F ... 176 °F) | |
| Process pressure absolute | 0.7 bar ... 4 bar abs |
| (10 psi ... 58 psi) | |
| Main wetted parts | PVDF (fully welded IP68 / NEMA6P) |
| Process connection | G / NPT 1" |
| Blocking distance | 0.3 m (1 ft) |
| Max. measurement distance | 10 m (33 ft) |
| Communication | Transmitter: |
| 4 ... 20 mA HART | |
| Profibus DP | |
| Certificates / Approvals | ATEX, FM, CSA, IEC Ex, TIIS, INMETRO, NEPSI |
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