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The NivuFlow 600 system was developed particularly for flow measurement in full pipes. To meet the highest accuracy requirements it is possible to equip the transmitters with up to 4 measurement paths, with up to 32 velocity paths. There are pipe sensors as well as contactless clamp-on sensors available for the measurement system. It is not necessary to interrupt running processes to install both sensor types. The system is suitable for the detection of flow rates in various liquid media covering a wide range of applications.
The NivuFlow 600 measurement principle utilizes the advantages of transit time. With this technolgoy ultrasonic signals between two sensors are measured. The transit time in flow direction is shorter than it is against the flow direction. The difference between both transit times is proportional to the average flow velocity along the measurement path. With the number of the measured paths the accuracy rises accordingly.
|Power supply||100 - 240 V AC, -15 % / +10 %, 47 to 63 Hz or 10 - 35 V DC|
|Power consumption||1 relay energised, 230 V AC: (rounded) 14 W up to 8 sensors transit time 1 MHz|
|Housing Material||aluminium, plastic|
|Weight||approx. 1150 g|
|Protection||IP 20 (installation in switching cabinet), IP 68 (field enclosure)|
|Operating temperature||DC: -20°C to +70°C AC: -20°C to +65°C|
|Storage temperature||-30°C to +80°C|
|Max. humidity||80%, non-condensing|
|Display||240 x 320 pixel, 65536 colours|
|Operation||rotary pushbutton, 2 function keys, menus in English, German, French, Swedish ...|
|Connection||plug with cage clamp terminals|
|Inputs||2x (Type T2) 4-20 mA, with 12 Bit resolution for storage of data from external units, load 91 Ohm, 2 x (Type T2) digital input|
|Output||2 x ( Type T2) 0/4-20 mA, load 500 Ohm, 12 Bit resolution 1x (Type T2) bistable relay SPDT, load up to 230 V AC/2 A (cos 0.9), minimum switching current 100 mA 1x (Type T2) relay SPDT, load up to 230 V AC/2 A (cos 0.9), min. switching current 100 mA|
|Data memory||1.0 GB internal memory, readout on faceplate via USB stick|
|Communication/data transmission||Modbus TCP via network (LAN/WAN, Internet) Modbus RTU via RS485 or RS232 Internet via Ethernet (in preparation)|
|Measurement uncertainty||velocity (v): ± 0.1 % depending on measurement uncertainty and margin conditions offset velocity < ± 5mm/s|
|Number of paths||up to 4 measurement paths up to 32 measurement paths with extention modules|
Specifications subject to change.
NivuFlow 600 allows high accurate flow measurements using the transit time method in full pipes