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All >> Level measurement >> Ultrasonic measurement Time-of-Flight Prosonic
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Product name:
Ultrasonic measurement Time-of-Flight Prosonic
Product series:

FDU91

Product brand:
E+H/Endress+Hauser
Product feature:
• Integrated temperature sensor for Time-of-Flight correction. Accurate measurements are possible even when temperature changes occur. • Hermetically welded PVDF sensor for maximum chemical resistance. • Suitable for harsh ambient conditions thanks to separate installation from the transmitter, with a maximum installation distance of 300 m. • Reduced buildup formation thanks to the self-cleaning effect. • Integrated automatic sensor detection for FMU90/FMU95 transmitters for easy commissioning. • Weather-resistant and flood-proof, with IP68 protection. • Optional integrated sensor heating prevents ice buildup and ensures reliable measurement performance.
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Measuring principle:
The ultrasonic measurement principle is based on the time-of-flight (ToF) method, measuring the distance between the reference point and the medium surface. The sensor emits ultrasonic pulses toward the material surface. The pulses are reflected from the material surface and received by the sensor, while the transmitter measures the time difference (t) between pulse transmission and reception. Based on the time difference (t) and sound velocity (c), the distance is calculated as D = c × t / 2. Based on the distance (D), the level (L), volume (V), and flow rate (Q) in weirs or open channels can also be calculated.
Product positioning:
Standard
Using scenario:
The FDU91 ultrasonic sensor is suitable for continuous, non-contact level measurement of liquids, slurries, sludge, powders, and bulk solids. It is maintenance-free and can also be used for flow measurement in open channels and weirs. Measurement is unaffected by dielectric constant, density, or humidity, while the sensor’s self-cleaning function eliminates the impact of medium buildup on measurement performance. It is suitable for use in hazardous areas, with a maximum measuring range of 10 m (33 ft) for liquids and 5 m (16 ft) for solids.
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Jiangsu Pinyi instrument Co., Ltd.
Shanghai Ruiyingda measurement and control technology Co., Ltd.
We specialize in instruments and process control.
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