Q-Eye Radar MT

Pulse-Wave FFT Technology 

In some applications it is an advantage to have a non contact flow measurement. When combining both Radar and Water level transmitter into a hybrid flowmeter, they provide a revolutionary approach to open channel and sewer flow monitoring. Combined are pulse wave radar velocity sensing technology with ultrasonic pulse echo level sensing to measure open channel flows.

modular flow transmitter  


  Sensor   1 x velocity 1 x water level (optional)
  Frequency   24 GHz
  V-Sensor   (bi-directional)
  Resolution   1 mm/s; min. wave height 3mm
  Accuracy   < 2,5 % of the reading ( under normal flow conditions )
  Display   4 lines, 20 characters
  Keyboard   4 keys
  Datalogger   16 GB Micro SD card
  Communication   RS485, MODBUS (RS232 or RS485), WLAN, GPRS, Ethernet, 10/100 Mbps
  Inputs   max. 4 x 4-20 mA, 2 x digital
  Outputs   max. 4 x 4-20 mA 4 x Relay, 2 x Pulse
  Power Supply   85-260 VAC (48/60 Hz) or 9-36 VDC
  Approval   ATEX (option)
  Enclosure   ABS, wall mounted



 PDF-Logo English:    Brochure for Non-Contact Measurements (PDF)          




Non Contact Velocity Sensor



  Measuring Principle Radar, 24 GHz
  Velocity Range ± 0,05 m/s to ± 15,0 m/s typical
  Resolution 1 mm/s, min. wave height 3mm
  Min. Distance to water surface 0,2 m
  Max. Distance to water surface 10 m
  Operating Temp. -20°C … +70°C
  Housing 100x100x42 mm (HxWxD)
  Ingress Protection IP68


Non Contact Velocity Sensor

Q-Eye S30a  


  Measuring Principle Radar, 24 GHz
  Velocity Range ± 0,3 m/s to ± 15,0 m/s
under optimum conditions  ± 0,15 m/s  to ± 15,0 m/s
  Resolution 1 mm/s, min. wave height 3mm
  Min. Distance to water surface: 0,5 m
  Max. Distance to water surface: 30 m
  Operating Temp. -35°C … +60°C
  Housing 120x122x55 mm (HxWxD)
  Ingress Protection IP68

Water Level

Compact Ultrasonic Level Transmitter

Water level transmitter ultrasonic flowmeter  


  Frequency   60 kHz for WLU3702 or
80 kHz for WLU3802, WLU3902
  Range   0,20 – 4 m for WLU3902
0,25 – 6 m for WLU3802
0,35 – 8 m for WLU3702
  Accuracy   ± (0,2% of measured value + 0,05% of range)
  Cable   Ø 6-12mm
  Display   1 line (option)
  Datalogger   10.000 sets of data (option)
  Power Supply   24 VDC
  Approval   ATEX (option)
  Mounting   1,5″ BSP/NPT for WLU3902 or
2″ BSP/NPT for WLU3802, WLU 3902
  Enclosure   Flame retardant plastic or powder coated aluminium


 PDF-Logo English:    Ultrasonic Water Level sensors (PDF)      

Versatile contact-free flow measurement

Q-Eye Radar MT is an extremely versatile flow measurement system designed for continuous operation and suitable for measurements of flows not only in rivers and open channels, but also in municipal wastewater and storm water sewers. Compact construction combined with the contact-free measurement principle enables an easy installation and use.


flowmeter waste water sewage manhole radar contact free non contact HydroVision Q-Eye

The ultrasonic depth sensor operates by energizing a piezoelectric transducer with an electronic pulse. This pulse creates a pressure wave that travels to the flow surface where a portion returns to the transducer. Our transmitter offers the best in liquid measurement. It is easy to install, eliminates maintenance caused by sensor fouling and your personnel do not get in contact with the fluid during installation.