NivuFlow 550

100 to 240 V AC, +10 % /-15 %,

47 to 63 Hz or. 9-36 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 OFR + 1x i-Sensor + 1 Relay energised
• 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. 4.000 g (incl. NF550 and iXT0 211) 
• Dimensions see Chap. "16.1 Enclosure Dimensions"

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...+70 °C
• AC: -20...+65 °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
• DC power supply: Plug-in and screw-on spring-loaded terminal block

• 1x 4...20 mA for external level (2-wire probe)
• 1x RxTx-Bus for NIVUS air-ultrasonic active sensors (OCL) (not for Type R1/G1/R3/G3)
• 1...8x 0/4...20 mA with 12-Bit resolution for external level, external controller setpoint and data storage of external devices, accuracy ±0.4 % of measurement range (20 mA), load 91 Ohm
• 2...10x digital input
• 1...9x Radar sensor (OFR) connectable (where applicable via iXT/MPX)

• 2...4x 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 bi-stable Relay (SPDT), loadable up to 230 V AC / 2 A (cos j 0.9), Minimum switching current  100 mA
• 5x Relays (SPDT), loadable up to 230 V AC / 2 A (cos j 0.9), Minimum switching current 10 mA

Internal 1.0 GB, for parameterisation/programming and measured value backup for approx. 570,000 data sets (time stamp);
can be read via front-side USB stick

From 30 seconds (depending on the operation 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 (only for Type G1/GR/G3/G9)