Flow Sensors

KDA Doppler Pipe Sensor

Part No. KDA-R/KDS-R

Flow velocity sensor for installation in pipes

Ultrasonic sensors for flow measurement in slight to heavily polluted media. Designed for fastening in pipes using a nozzle

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

KDA flow velocity sensors are suitable for continuous measurement of slight to heavily polluted media. The pipe sensors are designed for installation in pipes from the outside using a nozzle. Combined with transmitter types such as PCM F and without OCM F the result is a complete flow measurement system.

Typical applications for KDA pipe 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
and many more

Common
Measurement principle	Doppler (flow velocity) Piezo-resistive pressure measurement (level measurement)
Measurement frequency	750 kHz
Measurement range	0.005… 5 m
Zero point drift	max. 0.75 % of final value (0 – 50 °C)
Measurement uncertainty	(standing medium) ±0.5 % of final value (in range 0.005…3.5 m)
Protection	IP 68
Ex Approvals (option) / other Approvals (option)	ATEX: IBExU 07 ATEX 1082 Edition 1 Ex II 2G Ex ib IIB T4 Gb
Operating temperature	-40 °C… +50 °C (also for use in Ex zone 1)
Storage temperature	−40 °C… +70 °C
Operating pressure	max. 4 bar (combi sensor with pressure cell max. 1 bar)
Cable lengths	10 / 15 / 20 / 30 / 40 / 50 / 60 / 70 / 80 / 90 / 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 types	Sensors without pressure measurement: LiYC11Y 2 x 1.5 + 1 x 2 x 0.34 Combi sensor with pressure measurement:: LiYC11Y 2x1.5 + 1 x 2 x 0.34 + PA 1.5/2.5
Outside cable diameter	Sensors without pressure measurement: 8.4 mm ±0.25 mm Combi sensor with pressure measurement: 9.75 mm ±0.25 mm
Sensor connection	“K” or “L” connector: for connection to the OCM F / OCM FR (OCM FR only in German-speaking countries)
Sensor types	(Pipe/wedge) flow velocity sensor with v-measurement using the Doppler measurement principle and temperature measurement (to compensate for the effect of temperature on the speed of sound) Wedge combi sensor with v-measurement using the Doppler measurement principle; level measurement via pressure and temperature measurement (to compensate for the effect of temperature on the speed of sound)
Construction	for installation using nozzle, sensor screw connection and fastening element in pipes
Medium-contacting materials	PVDF (wedge sensor body) Stainless steel 1.4571/AISI 316 Ti; V4A (ground plate or pipe sensor jacket) Polyurethane (cable sheath, cable gland and pipe sensor head) Additionally with sensors with pressure measurement cell: Stainless steel 1.4404 (AISI 316L); V4A (pressure measurement cell) Viton® Shore A (round sealing ring / gasket)
Flow velocity measurement
Measurement range	−600 cm/s… +600 cm/s
Measurement uncertainty	±1 % of measurement range end value
Zero point drift	absolutely stable zero point
Beam angle	±5 degrees
Temperature Measurement/Sound Velocity Measurement
Measurement range	−20 °C… +50 °C
Measurement Error	±0.5 K
Level measurement – Pressure

Specifications subject to change.

Datasheet KDA Sensors

Datasheet for KDA pipe and wedge sensors

download file
PDF 224 KB

Technical Instruction for Doppler Sensors

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

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PDF 2 MB

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

download file
PDF 4 MB

EC-Type Examination Certificate Compact Doppler

for KDA-K.. / KDA-R.. / incl. supplements

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PDF 563 KB

Declaration of Conformity Compact Doppler Active Sensors

Compact Doppler Active Sensors KDA-K.. / KDA-R.. / KDS-K.. / KDS-R..

download file
PDF 181 KB

Declaration of Conformity "Ex" Compact Doppler Active Sensors

download file
JPG 770 KB

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