Endress+Hauser Ultrasonic measurementTime-of-FlightProsonic FDU91
Endress+Hauser FDU91 - Level - Ambient temperature: -40 °C ... 80 °C (-40 °F ... 176 °F); Degree of protection: IP68; Options: Second 4...20mA output.
The Endress+Hauser FDU91 is part of the Level range in our industrial catalog. The manufacturer's published data for this part number specifies Ambient temperature: -40 °C ... 80 °C (-40 °F ... 176 °F) and Degree of protection: IP68.
Version with separate transmitter in field housing or top hat rail housing Cost effective solution for open channel flow measurement in water / wastewater plants
Key manufacturer data on file for this item includes Options: Second 4...20mA output; Communication: Transmitter: 4 ... 20 mA HART PROFIBUS DP; Accuracy: +/- 2mm + 0.17% of measured distance; Measuring range: Up to 10m / 32ft; Measuring principle: Ultrasonic; Outputs: Transmitter: 4...20mA HART PROFIBUS DP; Process Connection: G / NPT 1"; Display/Operation: Transmitter FMU90; Hazardous area approvals: ATEX, FM, CSA, IEC Ex, INMETRO, NEPSI, UK Ex; Process temperature: -40 °C ... 80 °C (-40 °F ... 176 °F); Max. measurement error: Accuracy: distance measurement: +/- 2mm + 0.17%; Max. process pressure: 0.4 bar...4 bar (10 psi...58 psi). The complete technical table is shown in the Specifications tab on this page.
| Accuracy | +/- 2mm + 0.17% of measured distance |
|---|---|
| Ambient temperature | -40 °C ... 80 °C (-40 °F ... 176 °F) |
| Application limits | Foam / high turbulence possible: FDU92 Flange-flush assembly: FDU91F For tank farms scanner: FMU95 |
| Blocking distance | 0.3 m (1 ft) |
| Certificates / Approvals | ATEX, FM, CSA, IEC Ex, INMETRO, NEPSI, UK Ex |
| Characteristic / Application | Separated version with field housing or top hat rail housing for control cabinet instrumentation, 300m in-between sensor and transmitter |
| Communication | Transmitter: 4 ... 20 mA HART PROFIBUS DP |
| Components | Transmitter: FMU90 |
| Degree of protection | IP68 |
| Digital communication | HART, PROFIBUS DP |
| Display/Operation | Transmitter FMU90 |
| Hazardous area approvals | ATEX, FM, CSA, IEC Ex, INMETRO, NEPSI, UK Ex |
| Inputs | Transmitter FMU90 |
| Main wetted parts | PVDF (fully welded IP68 / NEMA 6P) |
| Max. measurement distance | Liquids: 10 m (33 ft), Solids: 5 m (16 ft) |
| Max. measurement error | Accuracy: distance measurement: +/- 2mm + 0.17% |
| Max. process pressure | 0.4 bar...4 bar (10 psi...58 psi) |
| Measuring principle | Ultrasonic |
| Measuring range | Up to 10m / 32ft |
| Medium temperature range | -40...80°C (-40...176°F) |
| Options | Second 4...20mA output |
| Outputs | Transmitter: 4...20mA HART PROFIBUS DP |
| Process Connection | G / NPT 1" |
| Process pressure / max. overpressure limit | 0.7 bar ... 4 bar abs (10 psi ... 58 psi) |
| Process temperature | -40 °C ... 80 °C (-40 °F ... 176 °F) |
| 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 |
| Supply / Communication | 4-wire (HART, PROFIBUS DP) |
Frequently Asked Questions
How do I get pricing for FDU91?
KKM Solutions is a quote-based industrial supplier, so prices are not listed online. Send the quote form on this page with your quantity, or email orderdesk@kkmsolutions.com, and our order desk will reply with pricing and availability within 1 business day.
Who manufactures the FDU91?
FDU91 is a Endress+Hauser part. KKM Solutions sources Endress+Hauser components to the exact manufacturer specification and cross-checks every order against manufacturer part data before it ships.
What are the key specifications of FDU91?
Key specifications include Accuracy: +/- 2mm + 0.17% of measured distance; Ambient temperature: -40 °C ... 80 °C (-40 °F ... 176 °F); Application limits: Foam / high turbulence possible: FDU92 Flange-flush assembly: FDU91F For tank farms scanner: FMU95; Blocking distance: 0.3 m (1 ft). The full specification table on this page lists every published attribute for this part.
How quickly can FDU91 ship?
In-stock items are dispatched the same business day for orders placed by 3 PM; sourced and quoted items ship per the quoted lead time. KKM Solutions ships worldwide — to your site, warehouse, or freight forwarder.
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