Technical Data
CompareContinuous / Liquids
| Measuring Principle | Ultrasonic |
| Characteristic / Application | Compact ultrasonic transmitter |
| Supply / Communication | 2-wire |
| Accuracy | +/- 3 mm or +/- 0,2 % of set measuring range |
| Ambient temperature | -20 °C ... 60 °C (-4 °F ... 140 °F) |
| Process temperature | -20 °C ... 60 °C (- 4°F ... 140 °F) |
| Process pressure / max. overpressure limit | 0.7 bar ... 3 bar abs (10 psi ... 44 psi) |
| Main wetted parts | PP/EPDM |
| Process connection | G / NPT 1 1/2" G / NPT 2" |
| Blocking distance | 1 1/2": 0.25 m (0.8 ft) 2":0.35 m (1.15 ft) |
| Max. measurement distance | Sensor 1-1/5": 5 m (16 ft) Sensor 2": 8 m (26 ft) |
| Communication | 4...20 mA |
| Certificates / Approvals | ATEX, CSA C/US, IEC Ex, NEPSI |
| Options | Accessory Enclosed: UNI flange 2" ... 4" |
| Application limits | For higher resistance: FMU41/42/FDU9x Foam / high turbulence possible: FMU42/FDU91 Fast filling and discharging rate: FMU90 + FDU9x Level limit detection: FMU90 + FDU9x |
Continuous / Solids
| Measuring Principle | Ultrasonic |
| Characteristic / Application | Compact ultrasonic transmitter |
| Supply / Communication | 2-wire |
| Accuracy | +/- 3 mm or +/- 0.2 % of set measuring range |
| Ambient temperature | -20 °C ... 60 °C (-4 °F ... 140 °F) |
| Process temperature | -20 °C ... 60 °C (-4 °F ... 140 °F) |
| Process pressure / max. overpressure limit | 0.7 bar ... 3 bar abs (10 psi ... 44 psi) |
| Main wetted parts | PP/EPDM |
| Process connection | G / NPT 1 1/2" G / NPT 2" |
| Blocking distance | Sensor 1 1/2": 0.25 m Sensor 2": 0.35 m |
| Max. measurement distance | Sensor 1-1/2": 2 m (6.6 ft) Sensor 2": 3.5 m (11 ft) |
| Communication | 4...20 mA |
| Certificates / Approvals | ATEX, CSA C/US, IEC Ex, NEPSI |
| Options | Accessory Enclosed: UNI flange 2" ... 4" |
| Application limits | Take notice of range diagram |
The FMU30 is intended only for standard water treatment and has no HART output. If HART output and corrosion resistance are required, use the FMU40 for a 5 m range, the FMU41 for an 8 m range and the FMU42 for a 10 m range.
The FMU30 is used in wastewater treatment plants, for process water tank loading, and for level monitoring of storage and buffer tanks. The FMU30 provides proven software algorithms and a four-line plain text display of warning and alarm messages, ensuring fast fault response. The display also shows the envelope curve, presenting the analysis results directly on site for fast and accurate fault diagnosis.
Benefits
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Four-line plain text display with menu-guided on-site operation for fast, simple instrument commissioning, available in 7 languages
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On-site envelope curve display for simple instrument fault diagnosis
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Linearization function (up to 32 points) converts the measured value into length, volume or flow in any unit
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Non-contact measurement, minimizing maintenance
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Can be installed from thread G1½ or 1½ NPT upwards
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Built-in temperature sensor for automatic correction of the temperature-dependent speed of sound
Application areas
For continuous, non-contact level measurement of liquids, pastes, sludge and bulk solids; system integration: 4...20 mA; maximum measuring range: 1½ sensor: liquids: 5 m (16 ft); solids: 2 m (6.6 ft); 2" sensor: liquids 8 m, solids: 3.5 m (11 ft)
Commonly used models:FMU30-AAHEABGHF 8 m and FMU30-AAHEAAGGF 5 m
Spare Parts & Accessories 22
22 spare parts · click to collapse
| Order code | Description | |
|---|---|---|
| 52025605 | Transparent coverCover for display, polyester housing Gasket EPDM Liquicap T/Liquicap M | Details |
| 52025606 | plastic coverGasket EPDM Polyester housing | Details |
| 52004137 | O-ringCover seal set Polyester housing F16 | Details |
| 71107553 | electronic plug-in module2-wire, 4-20mA. Usage: FMU30. | Details |
| 71107558 | Display/Controller FMU30Alphanumeric display, 4-line. Usage: FMU30. | Details |
| 71007843 | ToF Adapter FXA291Usage: connection Micropilot M, Micropilot S, Levelflex M, Prosonic M, Tank Side Monitor, Deltabar S, Cerabar S, Gammapilot M, Micropilot I, to Commubox FXA291. | Details |
| 71107554 | FMU30 sensorThread ISO220 G1-1/2. Hexagon nut G1-1/2 6 + gasket EPDM. Usage: FMU30. | Details |
| 71107555 | FMU30 sensorThread ISO220 G2. Hexagon nut G2" + gasket EPDM. Usage: FMU30. | Details |
| 71107556 | FMU30 sensorThread ANSI MNPT1-1/2. Usage: FMU30. | Details |
| 71107557 | FMU30 sensorThread ANSI MNPT2. Usage: FMU30. | Details |
| 71107559 | flat washerProcess gasket. Usage: sensor G1-1/2, FMR10B, FMR20B, FMR30B, FMU30. | Details |
| 71107560 | flat washerProcess gasket. Usage: sensor G2, FMU30. | Details |
| 52000598 | Plastic ring | Hexagon nut (SW70) G2, bk, PCfor sensor 2" Prosonic T/Prosonic M | Details |
| 52014146 | mounting nut六角形，SW60 适合FTW31,FTW32,FMI21 | Details |
| 71127762 | SunshadeUsage: FMU30. | Details |
| 71452318 | Sensor bracket 500mm, 316L, 1.5" sensorMounting 1-1/2" sensor. Material: 316L. USage: FMR10, FMR20, FMU30, FMU40, FMR10B, FMR20B, FRM30B. | Details |
| 71452319 | Sensor bracket 1000mm, 316L, 1.5" sensorMounting 1-1/2" sensor. Material: 316L. Usage: FMR10, FMR20, FMU30, FMU40, FMR10B, FMR20B, FMR30B. | Details |
| 71452321 | Sensor bracket 500 mm, 316L, 2" sensorMounting 2" sensor. Material: 316L. Usage: FMR20, FMU30, FMU41. | Details |
| 71452322 | Sensor bracket 1000mm, 316L, 2" sensorMounting 2" sensor. Material: 316L. Usage: FMR20, FMU30, FMU41. | Details |
| 71452324 | Mounting bracket 250x400x120 G1-1/2Material: 316L. Usage: FMR10, FMR20, FMU30, FMU40, FMR10B, FMR20B, FMR30B. | Details |
Configurator / Comparison
Measuring principle video
Click to playSource: public information from the Endress+Hauser website
Manuals & Documents 10
All documents for this model10 documents · click to expand
操作手册 Prosonic T FMU30 Chinese
Prosonic T FMU30 English
Prosonic T FMU30 English
Prosonic T FMU30 Description of Instrument Functions English
Prosonic T FMU30 Operating Instructions English
超声波物位测量 技术资料 Chinese
超声波物位测量 技术资料 Chinese
超声波物位仪 Chinese
Ultrasonic Level Measurement English
Prosonic T FMU30 Technical Information English
Case Studies
Municipal Wastewater Treatment · ultrasound — Application Case
Application Context
the inlet, biological and outlet stages of a municipal plant is a typical Municipal Wastewater Treatment duty. The project started from ultrasound , focusing on ultrasonic liquid level measurement or interface detection.
Process Constraints
effluent parameters drift and probes foul with sludge and biofilm, and high solids and corrosive fractions, with large diurnal flow swings only amplify it. The ultrasound specification must therefore cover sizing range against dead zone, mounting height and medium temperature.
Delivery Approach
Delivery was handled as the level range — level solution matched to the actual tank and silo geometry. Execution centred on sizing range against dead zone, mounting height and medium temperature, together with stable compliance with Grade 1A discharge limits and online data reporting.
Field Results
Operation shows the benefit clearly — retrofit without touching the tank, with short installation time, with confidence in this measuring point improving markedly.
Food & Beverage · ultrasound — Application Case
Customer Profile
The typical setting in Food & Beverage is dosing, pasteurising, filling and CIP stages. The measuring point is ultrasound ; the focus is ultrasonic liquid level measurement or interface detection.
Key Difficulties
Conditions are syrups, dairy and beverages that scale easily, under strict hygienic requirements and, on top of that, frequent cleaning demands instruments that withstand hot CIP/SIP caustic cycles, which a standard configuration cannot handle for long. The design therefore starts with sizing range against dead zone, mounting height and medium temperature.
Implementation
The scope ran through the level range: level solution matched to the actual tank and silo geometry. Technically it hinges on sizing range against dead zone, mounting height and medium temperature, and on these requirements: food-safety and hygienic design per 3-A / EHEDG.
Customer Benefit
In practice this means retrofit without touching the tank, with short installation time, which cut the workload on the site maintenance team.
Chemical & Pharmaceutical · ultrasound — Application Case
Project Background
The project covers reactors, metering vessels and finished-product tanks. The work centres on ultrasound and the core task is ultrasonic liquid level measurement or interface detection.
Operating Challenges
The medium and duty are characterised by highly corrosive media with solvents and crystallisation, partly in explosive atmospheres, and corrosion plus Ex protection shortens instrument life and makes downtime costly. So ultrasound cannot be specified generically — it calls for sizing range against dead zone, mounting height and medium temperature.
Solution
The Ainstru engineering team worked through the level range: level solution matched to the actual tank and silo geometry. The configuration involves sizing range against dead zone, mounting height and medium temperature, with these requirements in view: Ex certification and GMP traceability of records.
Results
Since start-up the system has run steadily; the practical result is retrofit without touching the tank, with short installation time.
Power & Energy · ultrasound — Application Case
Project Overview
The site is boiler feedwater, turbine condensate and FGD/DeNOx systems. The customer wanted ultrasound properly configured on the existing plant, with the aim of ultrasonic liquid level measurement or interface detection.
Technical Challenges
What actually causes trouble is high temperature and pressure with both steam and saline water, and drift under high temperature and pressure, with very costly unplanned outages. All of this means the ultrasound configuration has to involve sizing range against dead zone, mounting height and medium temperature.
Configuration
Supply and installation were organised through the level range: level solution matched to the actual tank and silo geometry. On site this meant sizing range against dead zone, mounting height and medium temperature, checked line by line against: compliance with power-industry codes and unit availability targets.
Performance
After commissioning the outcome is retrofit without touching the tank, with short installation time, and the readings are now used for process tuning.
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Endress+Hauser