K. R. Instruments
Bengaluru, Karnataka
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Flow Monitoring Device

Providing you the best range of Flow Monitoring Device such as Ultrasonic Flow Meter, Stationary & Mobile Discharge Instruments and Ultrasonic Flow Sensor with effective & timely delivery.


Ultrasonic Flow Meter

Aqua Profiler makes monitoring flow in natural streams, concrete lined channels and partially filled pipes very easy. It is able to measure flow in harsh and difficult hydraulic conditions. This lightweight and compact system uses HydroVision’s proven acoustic profiling technology to measure the flow, velocity and water level. The system is designed to measure both the vector and magnitude (using twin velocity beams) of individual cells (up to 128) to account for velocity variations within the flow, and obtain the flow profile. A third vertical beam is used to measure water level and combined with the velocity profile, calculates flow most accurately. The robust HDA-Pro in combination with the software “AquaProfiler mobile” provide all necessary information to the user at any time.

The Aqua Profiler measures the position and velocity of the particle, and hence establishes the fluid flow component in the given space point. The basic feature of the Acoustic Flow Profile is the ability to establish the velocity in many separate space points along the measurement axis and develop the flow profile. Alternatively to the complete flow profile, a single spot velocity in a specific cell can also be determined.

Velocity Sensor : 2-D Velocity Meter
Acoustic Frequency: 0,5 MHz Max.
Profiling range : 0 to 3 m Minimum
Cell Size : 0,01 m
Minimum Blanking:0,02 m
Maximum number of cells:128

Velocity range: +/- 5 m/s
Accuracy: 1% of measured value +/- 0,25 cm/s

Water Level Sensor Submerged capacitive ceramic pressure sensor

Range:  0 to 4 m
Accuracy: 0,1% of measuring range
Resolution: 0,005 m

Temperature sensor

Range:   -5°C to +40°C Accuracy:+/- 0,1°C

Technical data for type Aqua Profile-M-CW for use with sinker weights upon request.

Operating system: Microsoft Windows 7 Professional

  • 1.6 GHz Processor
  • 2 GB DDR2 RAM
  • 32 GB SSD Hard Disk

Display: -

  • 7” widescreen 1024x600 WSVGA
  • Readable under sunlight conditions
  • Touchscreen
  • Rugged waterproof design
  • Integrated speaker and microphone
  • Integrated GPS (WAAS/EGNOS)
  • Integrated digital Camera 2 Megapixel
  • Integrated Bluetooth Interface 2.0

Dimensions:140 x 230 x 40 (LxWxH)

Weight: 1,100 g incl. rechargeable battery

Protection Class: IP65

  • Backpack for safe storage and transport of measuring equipment
  • Fixing Element for rod Ø 20mm
  • Description Direct measurement of 2-D velocity profile in up to 128 cells
  • Integrated water level sensors
  • Discharge calculation according to EN ISO 748
  • ASCII and XML data export to Software-Q
  • Graphical menu on robust and mobile on rod


Stationary & Mobile Discharge Instruments

Stationary & Mobile Discharge Instruments
Stationary & Mobile Discharge Instruments

Ideal for applications in small streams and canals, Mobile and stationary solutions with Acoustic.

  • Q-Eye MII
  • Measurement
  • Pulse-Spectral-Correlation Technology
  • Q-Eye PSC
  • Application in sewage
  • Q-Eye MDS-5 measuring site
  • Installation (mounting cabinet)
  • Installation of sensor in tube
  • C21_Q-Eye MII, MDS-5, PSC_d_02.11.2010

Measuring principle:
Are you looking for a way to measure continuous or temporary discharge in small streams or canals reliably? – No problem with the new sensor for registration of mean velocity and level.

The sensor, which works based on the Acoustic Pulse-Spectral-Correlation Technology measures flow as well as water level with ultrasound and calculates the discharge with internal algorithms and deposited cross-section profile. Defined cross-section profiles are ideal (e.g. partially filled tubes, trapezoid canals or rectangular flow channels etc.). Standardized mounting plates ease the fast and uncomplicated installation with typical applications. Of course, mounting solutions on the sole or on the river bank of natural water is possible

Measuring range v:  -5.3 m/s up to +5.3 m/s (bi-directional) integrated ultrasonic level sensor, expandable with external pressure sensor up to 0-3.5 m

Data storage: 2 MB   (Q-Eye MII, Q-Eye MDS-5), 2 GB (Q-Eye PSC)
Data transmission: integrated GSM/GPRS modem as option for Q-Eye MII
Q-Eye MII (mobile measurement)

The strength of Q-Eye MII lies in mobile applications. The long lifetime of approx. 90 days with a measuring interval of 5 minutes, as well as the small and robust housing make it perfect for temporary measurements. In addition to water level and flow, the quality of signal, battery voltage and calculated velocity are also stored in the data logger.

An impulse output provides the necessary signal to a sampler. With the optional connectable pressure sensor, the water level can be collected redundantly. The measuring range can be upgraded up to 3.5m.
All connection cables are provided with water tight plugs, which makes mounting or changing of battery in field easy. With laptop and Software Q-Vision Setup, Q-Eye MDS5 (stationary measurement)

Our discharge measuring system type Q-Eye MDS5 is composed of two individual hardware components:
the ultrasonic Doppler sensor with measuring signal converter “Q-Eye”, as well as the reliable SEBA data logger type “MDS-5” for continuous data storage of for example flow, level and battery voltage. Flow measurements in small streams or canals up to approximately 4-5 m width are the ideal application for our Q-Eye MDS5.

Due to its very low energy consumption this instrument does not need an external power supply! With a measuring interval of 15 minutes in combination with a 100 Ah battery, a durability of 3 months can be achieved without problems! With an output of 4 to 20mA external sensors can be supplied with voltage, read and stored. Not only level and flow, but also parameter for water quality like O2, conductivity or turbidity can be measured and stored on a Compact Flash Card.

Programming of the system is possible with 5 keys, without further implementation. The simple menu navigation permits fast and safe operation. Up to 4 analogue and freely programmable outputs transmit the measuring results to a process control system.                         

Ultrasonic Flow Sensor

Ultrasonic Flow Sensor
Ultrasonic Flow Sensor

Measuring range v:  -5.3 m/s up to +5.3 m/s (bi-directional)
Measuring range h:  0.04 up to 1.3 m with integrated ultrasonic level sensor, expandable with external pressure sensor up to 0-3.5 m
Data storage: 2 MB   (Q-Eye MII, Q-Eye MDS-5), 2 GB (Q-Eye PSC)
Data transmission:  integrated GSM/GPRS modem as option for Q-Eye MII external GSM/GPRS modem as option for Q-Eye MDS-5 Q-Eye MII   (mobile measurement)

The strength of Q-Eye MII lies in mobile applications. The long lifetime of approx. 90 days with a measuring interval of 5 minutes, as well as the small and robust housing make it perfect for temporary measurements. In addition to water level and flow, the quality of signal, battery voltage and calculated velocity are also stored in the data logger. An impulse output provides the necessary signal to a sampler. With the optional connectable pressure sensor, the water level can be collected redundantly. The measuring range can be upgraded up to 3.5m. All connection cables are provided with water tight plugs, which makes mounting or changing of battery in field easy.

The display, which is activated with a magnetic switch, shows the active measuring values and informs about the status of the measuring device. With laptop and Software Q-Vision Setup, all parameters are entered and the measured values are read out. Q-Eye MDS5 (stationary measurement). Our discharge measuring system type Q-Eye MDS5 is composed of two individual hardware components the ultrasonic Doppler sensor with measuring signal converter “Q-Eye”, as well as the reliable SEBA data logger type “MDS-5” for continuous data storage of for example flow, level and battery voltage.

If requested, further digital or analogue sensors (e.g. multi- parameter probe MPS-D3) can be connected. Flow measure- ments in small streams or canals up to approximately 4-5 m width are the ideal application for our Q-Eye MDS5.

Due to its very low energy consumption this instrument does not need an external power supply With a measuring interval of 15 minutes in combination with a 100 Ah battery, a durability of 3 months can be achieved without problems!

Good news also for users who are already working with SEBA MDS data loggers: existing operating and evaluation software WEbdien, DEMASvis, DEMASdb or the SEBA HDA can be used continuously without further investments.


K. R. Instruments

Mr. J. M. Achutha (Proprietor)
No. 270, 21st Main, 2nd Cross, 2nd Stage, B. T. M. Layout
Bengaluru - 560076
Karnataka, India
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