NivuFlow 650 Flow Meter

100 - 240 V AC, -15 % / +10 %, 47 to 63 Hz or 10 - 35 V DC

• AC: Plug-in and screw-on spring-loaded terminal block
• DC/DL: Plug-in spring-loaded terminal block

AC: 30 VA/ DC: 20 W

• 1x relay energised, up to four paths with time-of-flight difference
• 1 MHz
• 230 V AC: 14 VA/ 6,8 W
• 24 V DC: 6,2 W

DIN rail 

• Material: Aluminium and Plastic 
• Weight: approx. 1300 g

Field Enclosure 

• Material: Polyamide (PA) / Polycarbonate PC
• Weight: approx. 3.900 g (incl. NF650)

DIN rail

• IP20 / IK08

Field enclosure

• IP67 (optional: IP68) / IK08

• Protection Class I
• Overvoltage Category II
• Pollution Degree 2

AC device for use at an altitude of up to 3000 m above sea level.  For relay voltages >150 V, use is restricted to altitudes up to max. 2000 m above sea level (AC and DC devices)

DC: −20°C to +70°C

AC: −20°C to +65°C

−30°C to +80°C

+50 °C

80%, non-condensing

Daylight-compatible TFT colour graphic display, 240x320 pixels, 65,536 colours

Menu-guided via rotary pushbutton and two function keys, in English, German, French, Italian, Spanish, Portuguese, Swedish, Danish, Finnish, Polish, Hungarian, Romanian, Czech, Russian, Korean and Chinese

• General: Plug-in spring-loaded terminal block
• AC power supply: Plug-in and screw-on spring-loaded terminal block

Digital Input:

• Galvanically isolated, 5… 24 V nominal; input current typically less than 5 mA at max. input voltage Uin = 30 V; input current typically greater than 1.5 mA at min. input voltage Uin = 3 V

Analog Input:

• 4 mA… 20 mA with 12-bit resolution for analog input values, accuracy ±0.4% of the measurement range (20 mA), load resistance 91 ohms

Digital Output:

• Relay (changeover), rated up to 230 VAC/2 A (cos 0.9 phi), recommended minimum switching current 10 mA @ 5 V
• Bistable relay (changeover), rated for up to 230 VAC/2 A (cos 0.9 phi), recommended minimum switching current 10 mA @ 12 V

Analog output:

• 0/4 mA… 20 mA, 500-ohm load, 12-bit resolution, accuracy better than ±0.1% at 20°C

1x 3-point flow controller, quick shot control, adjustable slide position in case of a malfunction (flow controller available only on TR/GR/TZ/GZ models)

1.0 GB internal memory, for parameterization/programming and data logging: approx. 570,000 data records (timestamped);

readout on faceplate via USB stick

Starting at 30 seconds (depending on the operating mode)

• HART (Slave) via AA1
• Modbus TCP via network (LAN/WAN, Internet)
• Modbus RTU via RS485 or RS232
• SMTP/FTP/HTTP
• 2G/3G/4G via built-in wireless modem (G2/GR/G4/GM/GZ models only)