Flow Meter

NivuFlow 750

Part No. NF7

Flow measurement with cross correlation technology

For ultrasonic flow measurement of slight to heavily polluted media in part filled and full pipes and channels. Best possible results even under difficult conditions.

[Translate to English:] IoT ready NivuFlow 750

Schnelle und einfache Durchflussmessung - NivuFlow 750

Very high accuracy flow meter by means of ultrasonic cross correlation method
Certified according to MCERTS - Sira MC160303/00
Up to 3 measurement spots as well as up to 9 flow sensors (Version M9)
Real-time indication of real flow velocity profiles
Intuitive, modern operating concept for quick and easy commissioning
Integrated numeric flow models
Ex approval Zone 1
IoT-ready with global 4G connectivity for highest availability and digital services
Energy-saving cycle operation for self-sufficient systems

Innovation, reliability and maximum accuracy

Together with the sensors, the NivuFlow 750 forms a stationary measuring system for continuous flow measurement and flow control for low to heavily contaminated media of various compositions. It is used in part filled and full flumes, canals and pipes of various geometries and dimensions. The measurement transducer is able to record the current flow rate at a maximum of 3 different measuring points with up to 81 flow velocity sensors.

Typical applications

WWTPs
Channel networks
Discharge structures
Industrial wastewater networks
measurement places for billing
intakes
drainage lines
return sludge lines
recirculation lines
and many more

The right sensor for each application

A wide selection of sensor designs is available for measuring flow velocity and flow level in flumes, pipes and canals ranging from very small to several metres in size: Flow velocity sensors with and without integrated flow level measurement as well as air-ultrasonic flow level sensors.
Highly resistant sensors in PEEK design with Hastelloy mounting plates or in titanium design and FEP-protected cables withstand even highly aggressive and corrosive environments.

Nivu Flow 750 - Universal transmitter

The intuitive one-hand operation and the bright high-resolution colour display allow quick, easy and cost-efficient commissioning on site. Additional input devices or software are not required.

The latest integrated numeric discharge models enable more accurate, more stable and more reliable determination of flow rates even under very difficult measurement conditions. The 3D flow profile is calculated in real time and is reproducibly and verifiably indicated on the transmitter display. Factors influencing the calculation results such as channel shapes, discharge behaviour and wall roughness are considered during flow calculation.

Delayed discharge behaviour and variable backwater effects are reliably recorded and taken into account in the calculation. In addition to the compact DIN rail version there is a weatherproof field unit available featuring appropriate connection space for outdoor installation

Common
Power supply	100...240 V AC, -15 % / +10 %, 47...63 Hz or 10...35 V DC
Power supply connection	AC: Plugged and screwed on spring-cage terminal block DC/DL: Plugged spring-cage terminal block
Maximum power consumption	AC: 30 VA DC: 20 W
Typ. power consumption	1x POA-VxU1 + 1x i-Sensor + 1 Relay energised + 1x iXT 230 V AC: 14 VA / 6.8 W 24 V DC: 6.2 W
Enclosure	DIN Rail Material: Aluminium and Plastic Weight: approx. 1300 g Field Enclosure Material: Polyamide PA / Polycarbonate PC Weight: approx. 4000 g (incl. NF750 and iXT0 211)
Protection	DIN Rail IP20 Field Enclosure IP67 (option IP68)
Operation conditions	Protection Class I Overvoltage Category II Pollution Degree 2
Operation altitude	AC unit for use at altitudes up to 3000 m above MSL. For relay voltages >150 V, use is restricted to altitudes up to max. 2000 m above MSL (AC and DC units)
Operating temperature	DC: -20...+70 °C AC: -20...+65 °C
Storage temperature	-30°C ... +80°C
Max. ambient temperature for installation and operation	+50 °C
Max. humidity	80%, non-condensing
Display	Daylight-readable TFT colour graphic display 240x320 pixel 65536 colours
Parameterisation / Programming	Menu-driven using rotary pushbutton an two function keys, in English, German, French, Italian, Spanish, Portuguese, Swedish, Danish, Finnish, Polish, Hungarian, Romanian, Czech, Russian, Korean and Chinese language
Connection	General: Plugged spring-cage terminal block AC Power Supply: Plugged and screwed on spring-cage terminal block
Inputs	1x 4...20 mA for external level (2-wire probe) 1x 4...20 mA for external level (2-wire probe; HART) 1x RxTx-Bus for NIVUS air-ultrasonic active sensor (OCL) 1x (only for Type S1/G1), 4x (only for Type SR/GR) or 7x (only for Type M3/G3/M9/G9) 0/4...20 mA with 12-bit resolution for external level, external control setpoint and data storage of external devices, accuracy±0.4 % of the measured value range (20 mA), load 91 Ohm 2x (only for Type S1/G1), 7x (only for Type SR/GR) or 10x (only for Type M3/G3/M9/G9) digital input 1x (only for Type S1/G1/SR/GR), 1...3x (only for Type M3/G3) or 3x (only for Type M9/G9) velocity sensors (POA, CS2 or EBM + CSM) or iXT or MPX connectable
Outputs	2x (only for Type S1/G1) or 4x (only for Type SR/GR/M3/G3/M9/G9) 0/4...20 mA, load 500 Ohm, 12 bit resolution, accuracy better than ±0.1 % at 20 °C (better than ±0.4 % at -20…+70 °C) 1x bistable relay (SPDT) (only for type S1/G1/SR/GR), loadable up to 230 V AC / 2 A (cos j 0.9), minimum switching current 100 mA 1x (only for Type S1/G1), 4x (only for Type SR/GR) or 6x (only for Type M3/G3/M9/G9) relay (SPDT), loadable up to 230 V AC / 2 A (cos j 0.9), minimum switching current 10 mA
Controller	1x 3-step controller, quick close control, adjustable slide valve position in the event of an error (controller only available for Types SR/GR/M3/G3/M9/G9)
Data memory	Internal 1.0 GB, for parameterisation/programming and measurement backup for approx. 570,000 data sets (time stamps); can be read via front-side USB stick
Storage cycle	30 seconds to 15 minutes
Communication	Modbus TCP via networks (LAN/WAN) Modbus RTU via RS485 or RS232 SMTP/FTP/HTTP 2G/3G/4G via built-in radio communications modem (only with Type G1/GR/G3/G9)

Specifications subject to change.

NivuFlow 750 DIN rail enclosure dimensions in mm

NivuFlow 750 field enclosure dimensions in mm

Brochure | NivuFlow 750

High accurate flow measurement for slightly polluted and dirty media in part filled and full pipes, channels and more.

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PDF 3 MB

Instruction Manual | NivuFlow 750 / NivuFlow 700 (Rev. 02)

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PDF 8 MB

Declaration of conformity "Permanent flow measurement transmitter with internal modem for remote data transmission "NF7..../ NR7..."with

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PDF 191 KB

Declaration of Conformity NivuFlow 7xx

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PDF 138 KB

Technical Instructions | "NIVUS Modbus TCP/RTU" (Rev. 05)

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PDF 513 KB

MCERT | NivuFlow 750 (incorporating POA-K sensor) Echo Profile Flowmeter

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PDF 156 KB

MCERT | NivuFlow 750 Echo Profile Flowmeter with POA-R sensor and i-Sensor

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PDF 153 KB

MCERT | NivuFlow 750 Echo Profile Flowmeter and POA-R sensor

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PDF 146 KB

Tender Specification "NivuFlow 750"

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DOC 84 KB

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