Flow Sensors

POA Correlation Pipe Sensor

Part No. POA-V2XXR

Medium measurement range for levels up to ca. 1m

Cross correlation sensors for flow velocity and level detection in part filled and full pipes and channels. For installation in pipes

  • For high-accurate flow measurement of ultrasonic cross correlation method
  • Interference-free connection over long distances through digital signal transmission
  • Cables can be extended without any problems using standard cables
  • Absolutely stable zero point and drift-free
  • Measurement in heavily polluted and abrasive media
  • Easy installation without additional constructions and perfectly matched mounting accessories
  • Installation under process conditions possible
  • Suitable for all channel cross sections

 

POA flow velocity sensors are suitable for continuous measurement of slight to heavily polluted media.
The pipe-shaped sensors are designed for installation in pipes from the outside using a nozzle. Combined with transmitter types such as NivuFlow 750 and an external level measurement the result is a complete flow measurement system.

Typical applications for POA pipe sensors

  • Stormwater treatment plants: flow measurements and control of the discharge to the WWTP
  • Wastewater treatment plants: intake, discharge, activated sludge tank intakes, return sludge, recirculation, surplus sludge, digester discharge and flocculant dosage
  • Direct discharge control, infiltration (extraneous water) or leakage detection
  • Industrial wastewater networks
  • and many more

 

 

Common
Measurement principleUltrasonic Cross Correlation with digital pattern detection (flow velocity) Ultrasonic transit time (level measurement)
Sensor typesv-sensor with T-compensation v-sensor with T-compensation and h measurement (water-ultrasound)
Ex-ApprovalII 2 G Ex ib 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
Cable lengths10/15/20/30/50/100 m pre-configured, can be extended upon request
Cable typesLiYC11Y 2 x 1.5 + 1 x 2 x 0.34
Outside cable diameter8,4 mm ±0,25 mm
Sensor connectionCable end pre-configured for connection to NFP and OCM CF Cable end with plug for connection to PCM 4 and PCM Pro
Medium-contacting materialsPolyurethane, stainless steel 1.4571, PPO GF30, PTFE Optional: sensor resistant to chemicals made of PEEK, sleeve made of Hastelloy C-276; cable with FEP coating
Flow velocity measurement
Measurement range-100 cm/s to +600 cm/s
Number of scan layersmax. 16
Measurement uncertainty for 0.05≤|V|≤0.5 m/s: E_v=0.5/|V| [%]
Zero point driftabsolutely stable zero point
Beam angle±5 degrees
Level measurement water-ultrasonic sensor
Measurement range0.05 to 200 cm
Zero point driftAbsolutely stable zero point
Measurement uncertainty +/- 2.0 mm or 0.2% of the measured range (whichever is greater)
Temperature measurement
Measurement range-20 °C to +60 °C
Measurement uncertainty ±0.5 K

Specifications subject to change.

Technical Instructions Correlation Sensors

Instruction Manuals / Technical Information English

Technical instructions for correlation sensors and external electronic box

Installation Instruction for Correlation and Doppler Sensors

Instruction Manuals / Technical Information English

Installation instruction for save installation 

EC type examination certificate sensor type POA

Certificates English

EC type examination certificate sensor type POA incl. supplement

IECEx Certificate of Conformity

Certificates English

EU Declaration of Conformity Ultrasonic Active Sensors POA / OCL / CS2

Certificates German English

Ultraschall-Aktivsensoren POA / OCL / CS2

EU Declaration of Conformity "Ex" - Ultrasonic Active Sensors POA / OCL / CS2

Certificates German English

"Ex" - Ultraschall-Aktivsensoren POA / OCL / CS2

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Flow measurement for pump efficiency

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Quick and cost-efficient upgrade of a wastewater pump station with a flow...
Quick and cost-efficient upgrade of a wastewater pump station with a flow measurement.
Flow Measurement Pressure Vessel Pump Station

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Quick and cost-efficient upgrade of a wastewater pump station with a flow...
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Durchflussmessung bei schwierigen Bedingungen

Durchflussmessung bei schwierigen hydraulischen Bedingungen

Ex-geschützte Durchflussmessung einer Abwasserleitung mit hoher Messdynamik und...
Ex-geschützte Durchflussmessung einer Abwasserleitung mit hoher Messdynamik und turbulenten Abfluss in einer maroden Betonleitung.
Investigation of Infiltration Water in smaller Diameters

Infiltration Water

Continuous flow rate measurement to detect the extraneous water volumes. ...
Continuous flow rate measurement to detect the extraneous water volumes.
Flow Measurement – Replacement of defective EMF

Replacement of Defective EMF

Replacement of a EMF DN 700 without removal.
Replacement of a EMF DN 700 without removal.
Flow Measurement behind Grit Chamber

Retrofitting Flow Measurement

Retrofitting flow measurements in two previously installed stainless stee pipes...
Retrofitting flow measurements in two previously installed stainless stee pipes DN 600 behind grit chamber.
Durchflussmessung Umgehung Vorklärung

Durchflussmessung Umgehung Vorklärung

Einfache Nachrüstung anstelle kostenintensiver Neubau
Einfache Nachrüstung anstelle kostenintensiver Neubau
Recirculation Flow Measurement

Sludge Measurement

Replacement for 2 non-functional measurements in full filled pipe conduction...
Replacement for 2 non-functional measurements in full filled pipe conduction with high air-, pollution and grease load.
Return Sludge Flow Measurement

Return Sludge

Flow Mesaurement and flow volume in telescopic pipes.
Flow Mesaurement and flow volume in telescopic pipes.
Hot Sludge Flow Measurement

Hot Sludge

Continuous measurement of sludge coming from a digestion tower and being pumped...
Continuous measurement of sludge coming from a digestion tower and being pumped through a heat exchanger. Required to detect possible blockage or reduced pump performance and to ensure permanent heat supply for the WWTP social areas.
Flow Measurement at Overflow Sill

Bypass Flow Measurement

Cost-efficient and accurate measurement even at low flow rates in the 200 mm...
Cost-efficient and accurate measurement even at low flow rates in the 200 mm bypass line and eliminiation of EMF due to frequently flooded facility.
Flow and Analysis Measurement

Flow and Analysis Measurement

Installation of a measurement place for billing purposes including flow rate and...
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  • Anbohrsattel zur Installation von 1 ½“ Rohrsensoren ohne schweißen

    Pipe Sensor Accessories

    The mounting accessories allow the quick and easy installation of pipe sensors on various pipes. All...
    The mounting accessories allow the quick and easy installation of pipe sensors on various pipes. All components are made of high-quality stainless steel 1.4571.
  • Überspannungsschutz für Messgeräte und Sensoren

    Overvoltage Protection Unit

    DataPro, SonicPro and EnerPro surge arrestors – highly stressable and particularly adjusted to...
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  • 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
  • Die Rohrmesstrecken zur sicheren Erfassung von Fließgeschwindigkeit und Füllhöhe bei teil- und vollgefüllten, druckbehafteten Rohrleitungen

    Pipe measurement sections

    Available with various diameters and lengths. For sensor installation for reliable flow detection in...
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