Flow Sensors

CS2 Correlation Wedge Sensor

Part No. CS2-V3

Large measurement range for high flow levels

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

For high-accurate flow measurement 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
Suitable for all channel cross sections
The tailored selection of sensor constructions ensures the best possible solution for each application

CS2 flow velocity sensors are suitable for continuous measurement of slight to heavily polluted media in channels mainly featuring high levels.The wedge sensors are designed for mounting on channel walls, on the channel floor and on the inner walls of large pipes. In combination with transmitters such as NivuFlow 750 or NivuFlow 7550 and with level measurements integrated in the sensor or external level measurements, they form a complete flow measurement system.

Typical applications for CS2 wedge sensors

Wastewater treatment plants: intake, discharge, activated sludge tank intakes, return sludge, recirculation, surplus sludge, digester discharge and flocculant dosage
Industrial wastewater networks
Large Collectors
Particularly suitable for large channels featuring levels starting at 500 mm

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	IP 68
Ex-Approval	II 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 pressure	max. 4 bar (combi sensor with pressure 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-correla-tion 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 water-ultrasound and tempera-ture 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 meas-urement to compensate for the influence of the latter on the speed of sound Combi sensor with velocity sensor by cross-correlation, level measurement using water-ultrasound and redun-dantly using pressure, incl. temperature measurement to compensate for the influence of the latter on the speed of sound
Construction	Wedge sensor for mounting on the channel floor or the channel wall
Medium-contacting materials	Polyurethane, stainless steel 1.4571, PPO GF30, PEEK, PA6
Flow velocity measurement
Measurement range	−350 cm/s to +600 cm/s
Max. Measuring span	Δ 700 cm/s
Quantity of scan layers recorded and computed	max. 32
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
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. 12)

download file
PDF 7 MB

Mounting Instruction | Correlation and Doppler Sensors (Rev. 08)

download file
PDF 4 MB

EC type examination certificate sensor type POA, OCL and CS2

EC type examination certificate sensor type POA incl. supplement

download file
PDF 516 KB

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

download file
PDF 761 KB

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

download file
PDF 37 KB

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

download file
PDF 193 KB

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.

Go to configurator

Individual Offer / Questionnaire

Also for your individual measurement spot we support you gladly. Please fill in our questionnaire.

Download questionnaire

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 hotline

+49 7262 9191-794

Send message

Service

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

Service hotline

+49 7262 9191-955

Send message