Flow Sensors

CS2 Correlation Pipe Sensor

Part No. CS2-V3

Large measurement range for big pipes

Ultrasonic sensors for flow measurement with very high accuracy in slight to heavily polluted media. For installation in pipes up to 5000 mm diameter

[Translate to English:] Durchflussmessung - Installationsvergleich

[Translate to English:] Durchflussmessung Ultraschall Kreuzkorrelation

NIVUS NFP Produktfilm - Schnelle und einfache Montage

Very high accuracy by means of ultrasonic cross correlation method
Interference-free connection over long distances through digital signal transmission
Cable extensions over several 100 metres with standard cables possible without any problems
Absolutely stable zero point and drift-free
Measurement in slightly to heavily contaminated media
Suitable for media with high solids loads
Easy installation without additional constructions thanks to optimised mounting accessories
Installation under process conditions possible
Particularly suitable for pipe sections starting at 1000 mm diameter

The pipe sensors are designed for mounting from the outside into the pipelines using nozzles. In combination with transmitters such as NivuFlow 750 or NivuFlow 7550 and an additional external level measurement, they form a complete flow measurement system for part filled applications. They can also be used for permanently full pipes or Channels. The additional height measurement can be omitted here.

Typical applications for CS2 pipe sensor

Channel networks: billing measurement places, flow measurement in large pipe sections
Wastewater treatment plants: intake, discharge, activated sludge tank intakes, return sludge, recirculation, surplus sludge, digester discharge and flocculant dosage
Pump stations: pumped quantities
Industrial wastewater networks
and many more

General
Measurement principle	Ultrasonic Cross Correlation with digital pattern detection (flow velocity) Ultrasonic transit time (level measurement) Piezo-resistive pressure measurement (level measurement)
Measurement frequency	1 MHz
Protection	IP68
Ex-Approval	II 2G 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 pressure	max. 4 bar (for combi sensors with pressure measuring cell max.1 bar)
Cable lengths	For sensors without plugs (sensor connection type "K" and "L") extendable to max. 250 m cable length. For sensors pressure measurement cell (level measurement Type VxD0/VxU1), a pressure compensation element is required for cable lengths over 30 m, which can also be used to connect the extension.
Cable types	Combi 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 diameter	Combi sensor with pressure measurement: 9.75 mm ±0.25 mm Sensors without pressure measurement: 8.4 mm ±0.25 mm
Sensor types	Flow velocity sensor with v-measurement by cross-correlation and temperature measurement to compensate for the influence of the latter on the speed of sound Combi sensor with velocity sensor by cross-correlation, level measurement using waterultrasound and temperature measurement to compensate for the influence of the latter on the speed of sound Combi sensor with velocity sensor by cross-correlation, level measurement using pressure and temperature measurement to compensate for the influence of the latter on the speed of sound Combi sensor with velocity sensor by cross-correlation, level measurement using waterultrasound and redundantly using pressure, incl. temperature measurement to compensate for the influence of the latter on the speed of sound
Construction	Wedge sensor for installation on the channel bottom or the channel wall Pipe sensor for installation using nozzle, sensor screw connection and fastening element in pipes
Medium-contacting materials	Polyurethane, stainless steel 1.4571, PPO GF30, PEEK, PA6
Flow velocity measurement
Measurement range	−350 cm/s to +600 cm/s Maximum measurement span: ∆ 700 cm/s/s
Quantity of scan layers recorded and computed	Max. 32
Zero point drift	absolutely stable zero point
Error limits (per scan layer)	< 1 % of measurement value (v > 1 m/s) < 0,5 % of measurement value +5 mm/s (v < 1 m/s)
Minimum filling level	8 cm
Beam angle	±5 degrees
	50°
Level measurement - water-ultrasonic
Measurement range	0 to 500 cm; minimum absolute measurable height 10 cm (only for wedge sensors)
Measurement uncertainty	≤ ±2 mm
Level measurement – Pressure
Measurement range	0 to 500 cm
Zero point drift	max. 0.75 % of final value (0 - 50 °C)
Measurement uncertainty	≤ 0.5% of the final value
Temperature measurement
Measurement range	−20 °C to +50 °C
Measurement uncertainty	±0,5 K

Specifications subject to change.

Technical Instructions | Correlation Sensors and external Electronic Box (Rev. 13)

download file
PDF 7 MB

Mounting Instruction | Correlation and Doppler Sensors (Rev. 09)

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PDF 4 MB

EC type examination certificate sensor type POA, OCL and CS2

EC type examination certificate sensor type POA incl. supplement

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PDF 516 KB

IECEx Certificate of Conformity "Sensors type POA, OCL and CS2"

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PDF 761 KB

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

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PDF 37 KB

EU Declaration of Conformity | “Ex” Ultrasonic active sensors POA / OCL / CS2

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PDF 193 KB

Tender Specification CS2 Sensor

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DOC 46 KB

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