E+H Prosonic FMU90 Ultrasonic Level Transmitter

The FMU90 Series Ultrasonic Level and Flow Controller offers an advanced process measurement solution engineered for challenging industrial environments where continuous non-contact detection is required. Utilizing high-frequency ultrasonic echo time-of-flight technology, this system processes signals from remote sensors to deliver exceptionally high accuracy across measurement ranges extending up to 70 meters. The dual-channel transmitter capability allows process engineers to perform simultaneous two-point level tracking or differential measurement across bar screens and rake systems, dramatically reducing field hardware costs.

Built-in hydraulic formulas and international flow equations enable instant conversion of liquid head measurements into precise volumetric flow rates for open flumes and weirs. Integrated dynamic echo tracking algorithms actively map and filter out false signal reflections caused by internal tank obstructions, agitator blades, or sidewall buildup, ensuring uninterrupted signal stability even in turbulent or vapor-heavy atmospheres. Designed for long-term field reliability, the system features comprehensive data logging, flexible relay control outputs for automated pump sequencing, and seamless integration with standard industrial automation networks.

Frequently Asked Questions:

Q1: Can the FMU90 controller be connected to third-party ultrasonic sensors?
A: The controller is optimized to work with standard piezo-ceramic ultrasonic sensors. If you require custom transducer matching or OEM sensor integration, our technical engineering team can provide compatible sensor modules and calibration protocols.

Q2: How does the dual-channel version improve operational efficiency?
A: A dual-channel unit allows you to monitor two separate tanks simultaneously or compute differential levels (such as upstream and downstream levels at a bar screen) using a single transmitter, cutting hardware and installation costs by up to 40%.

Q3: Is this ultrasonic flow controller suitable for outdoor field installations?
A: Yes. The field enclosure version features an IP66/NEMA 4X weather-proof rating with UV-resistant housing, suitable for ambient operation from -40°C to +60°C.

Q4: Do you offer OEM/ODM customization and private label branding for overseas distributors?
A: As a direct automated instrumentation manufacturer, we provide custom OEM firmware, custom label/housing branding, and configurable communication protocols tailored for international distributors and system integrators.

المواصفات الفنية

مواصفات المنتج التي تمت مراجعتها

Measuring Principle	Ultrasonic
Characteristics / Applications	Transmitter in field housing or top-hat rail housing for control cabinet installation; up to 6 relays for pump/screen/limit control; single-channel or dual-channel version
Features	Ingress Protection: IP 66 / NEMA 4X Automatic recognition of FDU9x sensors Optional: Flow measurement in open channels and weirs, or additional pump control functions
Power Supply / Communication	90 ... 253 VAC 10.5 ... 32 VDC Up to 2x 4...20 mA HART PROFIBUS DP
Measurement Accuracy	± 2 mm + 0.17% of measured distance
Ambient Temperature	-40 ... 60 °C (-40 ... 140 °F)
Communication	Up to 2x 4...20 mA HART PROFIBUS DP
Certificates & Approvals	ATEX, CSA
Options	Illuminated 6-line graphic display with guided multi-language user menu; echo envelope curve display for on-site diagnostics
Components	FDU9x Sensors

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