Prosonic M FMU41
Technical Data
CompareContinuous / Liquids
| Measuring Principle | Ultrasonic |
| Characteristic / Application | Compact ultrasonic transmitter |
| Supply / Communication | 2-wire HART |
| Accuracy | +/- 2 mm or +/- 0,2 % of set measuring range |
| Ambient temperature | -40 °C ... 80 °C (-40 °F ... 176 °F) |
| Process temperature | -40 °C ... 80 °C (-40 °F ... 176 °F) |
| Process pressure / max. overpressure limit | 0.7 bar ... 3 bar abs (10 psi ... 44 psi) |
| Main wetted parts | PVDF |
| Process connection | G / NPT 2" |
| Blocking distance | 0.35 m (1.15 ft) |
| Max. measurement distance | Liquids: 8 m (26 ft), Solids: 3.5 m (11 ft) |
| Communication | 4...20 mA HART |
| Certificates / Approvals | ATEX, FM, CSA, IEC, INMETRO, NEPSI |
| Application limits | For higher resistance: FMU42/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 HART |
| Accuracy | +/- 2 mm or +/- 0,2 % of set measuring range 1) |
| Ambient temperature | -40 °C ... 80 °C (-40 °F ... 176 °F) |
| Process temperature | -40 °C ... 80 °C (-40 °F ... 176 °F) |
| Process pressure / max. overpressure limit | 0.7 bar ... 3 bar abs (10 psi ... 44 psi) |
| Main wetted parts | PVDF |
| Process connection | G / NPT 2" |
| Blocking distance | 0.35 m (1.15 ft) |
| Max. measurement distance | Liquids: 8 m (26 ft), Solids: 3.5 m (11 ft) |
| Communication | 4...20 mA HART |
| Certificates / Approvals | ATEX, FM, CSA, IEC, INMETRO, NEPSI |
| Application limits | Take notice of range diagram |
Liquids
| Measuring Principle | Ultrasonic |
| Product headline | Compact ultrasonic measuring instrument Cost effective solution for open channels |
| Max. measurement error | > 2 mm depending on flow application |
| Measuring range | Measuring distance 0.4...8 m [1.3...26 ft] |
| Max. process pressure | 0.7 bar...3 bar (10 psi...44 psi) |
| Medium temperature range | -40°C...80°C (-40°F...176°F) |
| Degree of protection | IP68 |
| Outputs | 4...20mA HART |
| Inputs | 2-wire |
| Digital communication | HART |
| Hazardous area approvals | ATEX, IEC, FM, CSA, INMETRO, NEPSI |
The Prosonic FMU41 is used for non-contact level measurement of liquids, pastes and coarse bulk solids as well as for flow measurement in open channels or weirs. The two-wire or four-wire compact transmitter can be used for level measurement under demanding conditions such as storage tanks, agitators, silos and conveyor belts. On-site envelope curve display enables simple instrument fault diagnosis. The linearization function (up to 32 points) converts the measured value into length, volume or flow in any unit.
Benefits
Four-line plain text display with menu-guided on-site operation for fast, simple instrument commissioning, available in 7 languages
On-site envelope curve display for simple instrument fault diagnosis
The FieldCare operating software allows convenient remote operation, fault diagnosis and measuring point documentation
Suitable for hazardous areas (gas Ex, dust Ex)
Linearization function (up to 32 points) converts the measured value into length, volume or flow in any unit
Built-in temperature sensor for automatic correction of the temperature-dependent speed of sound
Optional remote display and operation (maximum installation distance from the transmitter of 20 m (66 ft))
Application areas
For continuous, non-contact level measurement of liquids, pastes, sludge and bulk solids; flow measurement in open channels and measuring weirs; system integration: HART (standard), 4…20 mA, PROFIBUS PA, FOUNDATION Fieldbus; maximum measuring range: liquids: 5 m, solids: 2 m. Other measuring ranges: FMU41: liquids 8 m, solids: 3.5 m; FMU42: liquids: 10 m, solids: 5 m; FMU43: liquids: 15 m, solids: 7 m; FMU44: liquids 20 m, solids: 10 m
Commonly available model:FMU41-ARB2A2
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Related Models
Case Studies
Municipal Wastewater Treatment — Wastewater Treatment Plant · Ultrasonic Application Case
Project Background
Municipal Wastewater Treatment customers at the Wastewater Treatment Plant stage have long faced the challenge of insufficient accuracy in effluent quality monitoring and instruments prone to contamination causing data drift, affecting compliance discharge, placing higher demands on the stability and measurement accuracy of Ultrasonic.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable Ultrasonic for the customer and delivered one-stop service covering selection, installation, commissioning and tuning.
Results
- Measurement accuracy and response speed significantly improved, with stable and reliable data;
- Instruments adapt to complex Municipal Wastewater Treatment conditions, greatly reducing maintenance;
- Helping customers achieve continuous online monitoring and cost reduction, highly recognized by customers.
Food & Beverage — Food Production Line · Ultrasonic Application Case
Project Background
Food & Beverage customers at the Food Production Line stage have long faced the challenge of high hygienic measurement requirements, with inline instruments needing to withstand CIP/SIP cleaning while maintaining stable accuracy, placing higher demands on the stability and measurement accuracy of Ultrasonic.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable Ultrasonic for the customer and delivered one-stop service covering selection, installation, commissioning and tuning.
Results
- Measurement accuracy and response speed significantly improved, with stable and reliable data;
- Instruments adapt to complex Food & Beverage conditions, greatly reducing maintenance;
- Helping customers achieve continuous online monitoring and cost reduction, highly recognized by customers.
Chemical & Pharmaceutical — Reactors and Storage Tanks · Ultrasonic Application Case
Project Background
Chemical & Pharmaceutical customers at the Reactors and Storage Tanks stage have long faced the challenge of highly corrosive media and complex conditions, requiring corrosion-resistant and explosion-proof instruments, placing higher demands on the stability and measurement accuracy of Ultrasonic.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable Ultrasonic for the customer and delivered one-stop service covering selection, installation, commissioning and tuning.
Results
- Measurement accuracy and response speed significantly improved, with stable and reliable data;
- Instruments adapt to complex Chemical & Pharmaceutical conditions, greatly reducing maintenance;
- Helping customers achieve continuous online monitoring and cost reduction, highly recognized by customers.
Power & Energy — Power Plant Boiler and Turbine · Ultrasonic Application Case
Project Background
Power & Energy customers at the Power Plant Boiler and Turbine stage have long faced the challenge of unstable measurement under high temperature and pressure, with high maintenance and downtime costs, placing higher demands on the stability and measurement accuracy of Ultrasonic.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable Ultrasonic for the customer and delivered one-stop service covering selection, installation, commissioning and tuning.
Results
- Measurement accuracy and response speed significantly improved, with stable and reliable data;
- Instruments adapt to complex Power & Energy conditions, greatly reducing maintenance;
- Helping customers achieve continuous online monitoring and cost reduction, highly recognized by customers.
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