Flow Meter

NivuFlow 7550New

Part No. N75-5KR1

Hybrid Flow Measurement with Surface Radar and Ultrasonic Profile Scanner

Flow measurement for open channels as well as part filled pipes. Optimum results through combination of ultrasonic cross correlation and radar technology.

  • Redundant flow measurement 
  • Contactless Radar surface velocity measurement
  • Ultrasonic sidewards velocity profile sensor
  • Two independent flow measurement technologies increase the accuracy and reliabbility
  • All sensors are above the area of sedimentation,
  • No maintenance
  • Reliable measurement  independently of wave formations, storm conditions as well as in low flow level circumstances

 

Hybrid Flow Measurement

NivuFlow 7550 is a hybrid measurement system which was particularly developed for flow metering in part filled pipes, channels and surface waters. Mainly in difficult applications the flow meter stands out for reliable results thanks to its advantages by using two measurement technologies.

Contactless Radar Flow Measurement

The contactless low-maintenance radar sensor provides reliable operation even at very high discharge velocities with low flow levels. Dynamic hydraulic models for various channel shapes based on varying filling levels enable accurate detection of the real flow rate.

Ultrasonic Flow Measurement as Overflow Sensor

The ultrasonic cross correlation sensor can be used as overflow sensor. In such cases the sensor provides reliable and accurate results in overflow situations where radar sensors cannot be used for measuring. Thanks to the flow profile detection and the detection of sedimentation on the bottom the flow rate is determined very accurately. Information on sedimentation is also considered for further measurements using the radar system.

Ultrasonic Flow Measurement as Redundant Measurement

The ultrasonic sensor can be used as permanent redundant measurement too. Installing the sensor on the side walls above the sedimentation helps to avoid soiling. The detection of local flow velocities covers the entire channel width and guarantees the determination of very accurate flow profiles. Pre-programmed hydraulic models increase the accuracy of the measurement system.

Easy Installation and Handling

Due to DIN rail mounting options the compact transmitter saves space and can be installed easily in control cabinets. Moreover the NivuFlow 7550 is available with a special protected field enclosure for use under harsh ambient conditions. The large graphic display permits quick and easy commissioning of the flow meter system.

NivuFlow 550 provides extended diagnostic options and facilitates in-depth analysis of running processes on site. The transmitter software is in line with current requirements. Future-proof protocols and versatile communication and integration options open many ways for operators to integrate the devices into higher systems such as SCADA or process control systems.

 

Typical NivuFlow 7550 Applications

  • Continuous and reliable flow metering in overflow situations
  • Sedimentation detection with ultrasonic level measurement in case of overflow
  • Measurement places featuring high dirt loads and sedimentation
  • Measurement places featuring bed load / debris
  • Measurement places with limited installation options within the channel
  • Reliable flow metering in shooting discharge and low flow levels
Common
Power supply100 to 240 V AC, +10 % /-15 %,
47 to 63 Hz or 9-36 V DC
Power consumption14 VA typical
Enclosure Aluminium, plastic (transmitter enclosure)
Plastic (field enclosure)
ProtectionIP 20,
IP 68 with optional field enclosure
Operating temperature-20°C to +70°C
Max. humidity80%, non-condensing
Display240 x 320 pixel, 65536 colours
Operationrotary pushbutton, 2 function keys, menus in English, French and other languages
Connectionplug with cage clamp terminals
Inputsup to 7 x 4 - 20 mA, up to 4 x RS 485
Outputsup to 4 x 0/4 – 20 mA, up to 5 x relays (SPDT)
Data memory2.0 GB internal memory, flexibly expandable, readout on faceplate via USB stick
Communication (optional)Modbus, HART®
Measurement uncertainty flow (Q): ± 5% typical;
± 2% under reference conditions
Measurement principleradar in combination with ultrasonic crosscorrelation

Specifications subject to change.

Data Sheet NivuFlow 550/NivuFlow 7550

Brochures / Data Sheets English

Instruction Manual "Flow Measurement Transmitter NivuFlow 7550"

Instruction Manuals / Technical Information English

Technical Instructions "NIVUS Modbus TCP/RTU"

Instruction Manuals / Technical Information English

EU Declaration of Conformity permanent flow measurement transmitter

Certificates German English Polish
 

Tender Specification "NivuFlow 7550"

Texts for Tender Specification English

EU-Type Examination Certificate "Permanent Flow Measurement Transmitter NivuFlow 7xx /Energy Saver"

Certificates English
  • Berührungslose Durchflussmessung OFR Radar Kompaktgehäuse

    OFR Radar sensor

    Suitable for applications featuring high velocities and low levels.
    Suitable for applications featuring high velocities and low levels.
  • POA Correlation Wedge Sensor

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    Ultrasonic sensors for flow measurement with very high accuracy in slight to heavily polluted media. For installation on channel wall or channel bottom
  • CS2 Correlation Wedge Sensor

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    Ultrasonic sensors for flow measurement with very high accuracy in slight to heavily polluted media. For installation on channel wall or channel bottom
  • CSM Correlation Sensor

    Ultrasonic sensors for flow measurement with very high accuracy in slight to heavily polluted media....
    Ultrasonic sensors for flow measurement with very high accuracy in slight to heavily polluted media. For installation on channel wall or channel bottom
  • iXT Ex-Trennmodul

    Ex Separator Module iXT

    Intelligent Ex separation interface for Ex-safe connection of correlation sensors
    Intelligent Ex separation interface for Ex-safe connection of correlation sensors
  • i-Serie intelligente Sensoren zur Füllstandsmessung

    i-Series Sensors

    Ultrasonic sensors with integrated transmitter for measurement of distance, level, empty space or...
    Ultrasonic sensors with integrated transmitter for measurement of distance, level, empty space or volumes. Suitable for harsh ambient conditions.

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