Flow Sensors

KDA Doppler Wedge Sensor

Part No. KDA-K/KDS-K

Wedge-shaped flow velocity sensor for channels

Ultrasonic sensors for flow measurement in slight to heavily polluted media. Wedge shape for installation on channel wall or channel bottom

  • Latest fourth-generation intelligent Doppler technology
  • Cost-effective pricing
  • Suitable for all channel cross sections
  • Easy to install without the need for additional constructions
  • Cables can be extended without any problems
  • Measurement in heavily polluted and abrasive media
  • Built-in pressure cell mechanically protected

 

KDA flow velocity sensors are suitable for continuous measurement of slight to heavily polluted media. The wedge-shaped sensors are designed for installation on either the channel wall or the channel bottom.

Combined with transmitter types such as PCM F and OCM F the result is a complete flow measurement system.

Typical applications for KDA wedge sensors

  • Wastewater treatment plants: intake, discharge, activated sludge tank intakes, return sludge, recirculation, surplus sludge, digester discharge and flocculant dosage
  • Permanent measurements on stormwater treatment facilities such as stormwater overflow tanks, rainwater sedimentation and retention tanks
  • Direct discharge control, infiltration (extraneous water) or leakage detection
  • Industrial wastewater networks
  • Measurement campaigns in channel networks
  • and many more

 

 

 

 

 

Common
Measurement principleDoppler (flow velocity) Piezo-resistive pressure measurement (level measurement)
Sensor typesv-sensor with T-compensation v-sensor with T-compensation and h measurement (hydrostatic)
ProtectionIP 68
Ex-ApprovalII 2 G Ex ib IIB T4 gb (ATEX) Ex ib IIB T4 Gb (IECEX)
Operating temperature-20 °C to +50 °C -20 °C to +40 °C if using the sensors in Ex Zone 1
Storage temperature-30 °C to +70 °C
Operating pressuremax. 4 bar (combi sensor with pressure cell max. 1 bar)
Cable lengths10/15/20/30/50/100 m pre-configured, can be extended upon request; a pressure compensation element is required if cables longer than 30 m are used with sensors featuring an integrated pressure measurement cell. The compensation element can be used also to connect the extension.
Cable typesCombi sensor with pressure measurement:: LiYC11Y 2x1.5 + 1 x 2 x 0.34 + PA 1.5/2.5 Sensors without pressure measurement: LiYC11Y 2 x 1.5 + 1 x 2 x 0.34
Outside cable diameterCombi sensor with pressure measurement: 9.75 mm ±0.25 mm Sensors without pressure measurement: 8.4 mm ±0.25 mm
Sensor connectionCable end pre-configured for connection to OCM F / FR, cable types "K" or "L"
Medium-contacting materialsPVDF (wedge sensor body); stainless steel 1.4571 (ground plate); Polyurethane (cable sheath, screw joint and pipe sensor head) Additionally for sensors with pressure measurement cell: Hastelloy© C276 (pressure cell); Viton; PA/PR (pressure cell gasket) Optional: cable with FEP coating (sensors without pressure measurement only)
Flow velocity measurement
Measurement range-600 cm/s to +600 cm/s
Measurement uncertainty ±1 % of measurement range end value
Zero point driftabsolutely stable zero point
Beam angle±5 degrees
Level measurement – Pressure
Measurement range0 to 500 cm
Zero point driftmax. 0.75 % of final value (0 – 50 °C)
Measurement uncertainty standing medium: +/- 0.5 of final value
Temperature measurement
Measurement range-20 °C to +60 °C
Measurement uncertainty ±0.5 K

Specifications subject to change.

Datasheet KDA Sensors

Brochures / Data Sheets English

Datasheet for KDA pipe and wedge sensors

Technical Instruction for Doppler Sensors

Instruction Manuals / Technical Information English

Technical Instruction for KDA Doppler sensors (pipe and wedge style)

EC Type Examination Certificate EX KDO

Certificates English

EU-Declaration of Conformity “Ex“ Compact Doppler Active Sensors

Certificates German English

“Ex“ Kompaktdoppler-Aktivsensoren

EU-Declaration of Conformity Compact Doppler Active Sensors

Certificates German English

Kompaktdoppler-AktivsensorenKDA-K.../ KDA-R.../ KDS-K…/ KDS-R…

  • OCM F Messumformer für Durchflussmessung bei teil- und Vollfüllung in Rohren, Kanälen sowie Gerinnen

    OCM F Flow Meter

    For ultrasonic flow measurement of slight to heavily polluted media in part filled an full pipes and...
    For ultrasonic flow measurement of slight to heavily polluted media in part filled an full pipes and channels. Complete measurement system in connection with KDA sensors
  • OCM FR Messumformer für Durchflussmessung bei teil- und Vollfüllung in Rohren und U-Profilen bis DN 400

    OCM FR Messumformer

    Zur Ultraschall-Durchflussmessungen von leicht bis stark verschmutzten Medien in teil- und voll...
    Zur Ultraschall-Durchflussmessungen von leicht bis stark verschmutzten Medien in teil- und voll gefüllten Rohren und U-Profilen bis DN 400. Komplettes Messsystem in Verbindung mit KDA-Sensor
  • NivuLog SunFlow Durchflussmessstation für leicht bis stark verschmutze Medien

    NivuLog SunFlow Flow Meter

    Self-sufficient measurement station with integrated data transmission via GPRS. For discontinuous...
    Self-sufficient measurement station with integrated data transmission via GPRS. For discontinuous flow measurement in slight to heavily polluted media
Open Channel Flow Measurement

Flow Measurement Part Filling

Common Level and Flow velocity measurement with a sensor in a partly filled...
Common Level and Flow velocity measurement with a sensor in a partly filled inflow channel.
Flow Measurement via GPRS-Transmission

Autarchic flow measurement

Detection of the discharge volumes from pit water purification system with...
Detection of the discharge volumes from pit water purification system with automated regular remote data transmission without external power supply.
  • Rohrmontageset für eine schnelle und einfache Montage für Keilsensoren

    Wedge Sensor Accessories

    The mounting accessories allow the quick and easy installation of wedge sensors. The solid...
    The mounting accessories allow the quick and easy installation of wedge sensors. The solid high-quality accessories are made of stainless steel 1.4571 and plastic and are suitable for installation in abrasive media.
  • Überspannungsschutz für Messgeräte und Sensoren

    Overvoltage Protection Unit

    DataPro, SonicPro and EnerPro surge arrestors – highly stressable and particularly adjusted to...
    DataPro, SonicPro and EnerPro surge arrestors – highly stressable and particularly adjusted to sensors and transmitters. Maximum operational safety at small dimensions.
  • Overvoltage protection enclosure

    BSG 12, 32, 42 and BSG 20 Ex - for DataPro, SonicPro, EnerPro and IsoPro surge arrestors
    BSG 12, 32, 42 and BSG 20 Ex - for DataPro, SonicPro, EnerPro and IsoPro surge arrestors
  • CS2 Correlation Wedge Sensor

    Ultrasonic sensors for flow measurement with very high accuracy in slight to heavily polluted media....
    Ultrasonic sensors for flow measurement with very high accuracy in slight to heavily polluted media. For installation on channel wall or channel bottom
  • POA Correlation Wedge Sensor

    Ultrasonic sensors for flow measurement with very high accuracy in slight to heavily polluted media....
    Ultrasonic sensors for flow measurement with very high accuracy in slight to heavily polluted media. For installation on channel wall or channel bottom
  • Mini Correlation Sensor

    Ultrasonic sensors for flow measurement with very high accuracy in slight to heavily polluted media....
    Ultrasonic sensors for flow measurement with very high accuracy in slight to heavily polluted media. For installation on channel wall or channel bottom

Haven't found the appropriate product?

You haven’t found the right product? Then use our application configurator – it will get you to the right product step by step.

Product Consultation

You want to have best information about our products? Our experts will gladly develop together with you the best system solution for your application.

Service

You have questions about your NIVUS products in use? Our service hotline will readily support you.

We will keep you informed.

Find out all you need to know about NIVUS - product news, special promotions, practical examples and much more