Produkt
E+H Prosonic FMU42 Non-Contact Ultrasonic Level Transmitter
FMU42-APB2A22A
The Prosonic FMU42 is a high-precision, non-contact ultrasonic level transmitter designed for continuous level measurement of liquids, pastes, and coarse solids, as well as accurate flow rate measurement in open channels and weir systems across demanding industrial environments.
The Prosonic FMU42 ultrasonic level sensor engineered for continuous, non-contact process level measurement and open channel flow monitoring. Utilizing advanced time-of-flight ultrasonic technology, this compact 2-wire or 4-wire transmitter delivers highly stable performance without touching the medium, significantly reducing wear and maintenance costs over long operating cycles.
Equipped with a chemically resistant PVDF transducer and an integrated temperature sensor, the device automatically compensates for sound velocity variations to maintain superior precision in challenging environments. The unit features menu-guided local operation with a 4-line plain text display and envelope curve diagnostics for effortless setup and troubleshooting.
Designed for versatile integration, it supports HART, PROFIBUS PA, and FOUNDATION Fieldbus communication protocols, making it an optimal solution for industrial storage tanks, process vessels, open channels, stockpiles, and automated liquid management systems.
FAQ
Q1: What is the maximum measurement distance for the Prosonic FMU42?
A1: The FMU42 offers a maximum measuring range of up to 10 meters (33 feet) for liquids and up to 5 meters (16 feet) for coarse bulk solids, with a minimum blocking distance of 0.4 meters (1.3 feet).
Q2: Can the Prosonic FMU42 be used for open channel flow measurement?
A2: Yes, the FMU42 features an integrated 32-point linearization function that allows direct conversion of measured distance into liquid level, volume, or open channel flow rate (weirs and flumes).
Q3: How does temperature change affect measurement accuracy?
A3: The sensor includes an integrated temperature sensor that automatically calculates temperature-dependent sound velocity compensation, ensuring accurate readings across fluctuating process temperatures from -40°C to +80°C.
Q4: Is this sensor suitable for corrosive liquid or hazardous outdoor applications?
A4: Yes, the wetted transducer is fully potted and constructed from high-grade PVDF for excellent chemical resistance. Additionally, explosion-proof certifications (ATEX, FM, CSA, NEPSI) are available for hazardous zone installations.
Technische Daten
| Measurement Principle | Ultrasonic |
|---|---|
| Features/Application | Compact Ultrasonic Transmitter |
| Power Supply/Communication | Two-wire/Four-wire (HART), PROFIBUS PA, FOUNDATION Fieldbus |
| Measurement Accuracy | +/- 4mm or +/- 0.2% of the set range |
| Ambient Temperature | -40...80 °C (–40...176 °F) |
| Process Temperature | -40...80 °C (–40...176 °F) |
| Process Pressure (Absolute)/Maximum Overpressure Limit | 0.7 bar ... 2.5 bar abs (10 psi ... 36 psi) |
| Main Wetted Components | PVDF |
| Process Connections | Flange: DN80, ASME 3", JIS 10K 80; DN100, ASME 4", JIS 10K 100 Mounting Bracket: |
| Blind Zone Distance | 0.4 m (1.3 ft) |
| Maximum Measurement Distance | Maximum Measurement Distance |
| Communication | 4 ... 20 mA HART PROFIBUS PA FOUNDATION Fieldbus |
| Certificates and Certifications | ATEX, FM, CSA, INMETRO, NEPSI |
| Application Limitations | Foam / high turbulence possible: FMU44/FDU92 Fast filling and discharging rate: FMU90 + FDU9x Level limit detection FMU90 + FDU9x |
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