المنتج
E+H Prosonic FDU91 High-Precision Ultrasonic Level Sensor
FDU91-RG1AA
Engineered for reliable process automation, this high-precision non-contact ultrasonic level sensor delivers accurate continuous level measurement for liquids and bulk solids up to 10 meters, as well as precise open channel flow monitoring. Featuring a fully welded, hermetically sealed PVDF sensor body with an IP68 flood-proof rating, an integrated temperature sensor for automatic acoustic velocity compensation, and advanced self-cleaning technology that prevents medium buildup, this robust probe ensures maintenance-free operation and seamless integration with HART and Profibus networks across demanding water treatment and chemical applications.
The High-Precision Ultrasonic Level Sensor delivers reliable, non-contact level measurement for liquids, pastes, sludges, and bulk solids, while also providing high-accuracy open channel flow monitoring in water treatment and process industries. Operating on advanced Time-of-Flight ultrasonic technology, the sensor emits acoustic pulses toward the target surface and calculates distance based on echo transit time, ensuring continuous measurement completely free from mechanical wear, corrosion, and medium contamination. Constructed with a fully welded PVDF body and engineered to IP68 flood-proof standards, the probe thrives in corrosive, wet, and harsh outdoor environments without performance degradation.
An integrated internal temperature sensor continuously compensates for sound velocity variations caused by outdoor temperature fluctuations, maintaining steady accuracy across shifting weather conditions. Designed with an active self-cleaning transducer surface, the probe resists dust, condensation, and sticky residue accumulation, eliminating false echo signals and drastically reducing field maintenance requirements. Compatible with remote multi-channel transmitters up to 300 meters away, this flexible sensor easily interfaces with standard industrial fieldbus networks including HART and Profibus DP, making it an indispensable solution for municipal wastewater plants, chemical storage facilities, industrial effluent channels, and bulk material handling systems worldwide.
FAQ
Q1: Can this ultrasonic level sensor be used for open channel flow measurement?
A: Yes. When paired with an intelligent flow transmitter or calculator, the sensor acts as a primary sensing element to measure water head and height in flumes and weirs, automatically calculating real-time flow rate and cumulative flow volume.
Q2: How does the sensor handle temperature fluctuations outdoors?
A: Sound speed varies with air temperature. Our sensor features an integrated internal temperature sensor that continuously feeds temperature data into the system for automatic Time-of-Flight calibration, guaranteeing high accuracy year-round.
Q3: What is the maximum distance allowed between the sensor and the remote transmitter?
A: The sensor supports split installation with a remote distance of up to 300 meters (984 ft) using shielded instrumentation cable without signal loss or noise interference.
Q4: Do you offer OEM/ODM services, private labeling, and custom thread connections?
A: Absolutely. As an original instrumentation manufacturer, we provide complete OEM/ODM solutions, including custom process connection threads, custom cable lengths, housing branding, and private labeling for international distributors.
Q5: What is the typical lead time and shipping process for international orders?
A: Standard products are dispatched within 5 to 7 working days, while bulk custom OEM orders typically take 2 to 3 weeks. We support global express delivery, air freight, and sea freight with full export documentation and CE/ISO quality compliance.
المواصفات الفنية
| Measurement Principle | Ultrasonic |
|---|---|
| Features/Applications | Split-type instrument, available in field-mounted or top-mounted enclosures; suitable for rack-mounted instruments; sensor and transmitter spacing 300m. |
| Power/Communication | Four-wire (HART, Profibus DP) |
| Measurement Accuracy | +/- 2mm + 0.17% of measurement distance |
| Ambient Temperature | -40...80 °C (–40...176 °F) |
| Process Temperature | -40...80 °C (–40...176 °F) |
| Process Pressure (Absolute)/Maximum Overpressure Limit | 0.7...4 bar abs (10...58 psi) |
| Main Wetted Components | PVDF (integral welded type, IP68 / NEMA6P) |
| Process Connection | G / NPT 1" |
| Blind Zone Distance | 0.3 m (1 ft) |
| Maximum Measurement Distance | Liquids: 10 m (33 ft), Solids: 5 m (16 ft) |
| Communication Transmitter | 4...20 mA HART PROFIBUS DP |
| Certificates and Authentications | ATEX, FM, CSA, IEC Ex, TIIS, INMETRO, NEPSI |
| Options | Second 4...20mA output |
| Components Transmitter | FMU90, FMU95 |
| Application Limitations | Foam/high turbulence possible: FDU92Flange-flush assembly: FDU91F For tank farms scanner: FMU95 |
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