Applying Endress Hauser FDU91-RG3AA as a non-contact ultrasonic sensor with a compatible Prosonic transmitter

Industrial buyers searching for Endress Hauser FDU91-RG3AA usually need three things at the same time: correct product identity, usable technical parameters and a clear boundary around configuration-dependent options. This corrected page addresses those points without repeating administrative tables.

Sensor role in a separated Prosonic system

Endress Hauser FDU91-RG3AA is identified here as a Endress+Hauser Prosonic FDU91 ultrasonic sensor configuration. The FDU91 is the acoustic sensor in a separated Prosonic installation. It emits and receives ultrasonic pulses while a compatible FMU9x transmitter calculates distance, level or flow from the time-of-flight signal.

Sound path and blocking distance

Installation planning for Endress Hauser FDU91-RG3AA should protect the existing wiring, process and configuration evidence. Mount the sensor perpendicular to the target surface with a clear sound path. Avoid obstructions inside the blocking distance, protect the cable joint and verify the empty-distance and full-calibration values at the transmitter.

Liquids, solids and open-channel flow

Application review for Endress Hauser FDU91-RG3AA should start with the actual process or machine duty. It is used above liquids, sludges, pastes and bulk solids, and can support open-channel flow measurement. Vessel geometry, foam, vapor, dust, filling streams and the 0.3 m blocking distance must be considered before mounting.

FDU91 operating envelope

The following table gives the relevant technical profile for Endress Hauser FDU91-RG3AA. It appears once on this page and separates confirmed family data from configuration-dependent details.

Endress+Hauser product data provides the range, blocking distance, temperature, pressure and PVDF/IP68 construction values shown here. Suffix-specific connection and approval details require the exact order code.

Sensor and transmitter data for quotation

To obtain a technically comparable offer for Endress Hauser FDU91-RG3AA, the inquiry should go beyond price and availability. A quotation should include the complete sensor code, cable length, process connection, hazardous-area requirements, measured medium, maximum distance, temperature, pressure and the exact FMU transmitter model.

• Keep the complete Endress Hauser FDU91-RG3AA phrase on the quotation and purchase order.
• Ask the supplier to identify inclusions, exclusions and the supporting document revision.
• Resolve technical deviations before order release rather than during receiving inspection.

Ultrasonic sensor reference image

The image is used as a stock or family reference for Endress Hauser FDU91-RG3AA. Confirm the delivered label, connectors, housing and included accessories against the approved quotation.

Range depends on process reflection

Compatibility for Endress Hauser FDU91-RG3AA must be established by function and configuration, not enclosure appearance. The FDU91 family has maximum ranges of 10 m in liquids and 5 m in solids under suitable conditions. Real usable range may be lower in foam, dust or poor-reflection applications.

Other FDU9x sensor choices

When alternatives to Endress Hauser FDU91-RG3AA are discussed, use nearby families only as comparison points. Related sensors include FDU90 and longer-range FDU92/FDU93/FDU95 models. The sensor and FMU90/FM95 combination must be approved as a complete measuring system.

Final order review for Endress Hauser FDU91-RG3AA

Before release, compare Endress Hauser FDU91-RG3AA with the nameplate, current manufacturer data and the installed application. Keep Endress Hauser FDU91-RG3AA on the RFQ, supplier offer, purchase order and incoming-inspection record so engineering and procurement review the same item.