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Ultrasonic sensors for flow measurement in slight to heavily polluted media. Wedge shape for installation on channel wall or channel bottom
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.
|Measurement principle||Doppler (flow velocity) Piezo-resistive pressure measurement (level measurement)|
|Sensor types||v-sensor with T-compensation v-sensor with T-compensation and h measurement (hydrostatic)|
|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||10/15/20/30/50/100 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 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 connection||Cable end pre-configured for connection to OCM F / FR, cable types "K" or "L"|
|Medium-contacting materials||PVDF (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 drift||absolutely stable zero point|
|Beam angle||±5 degrees|
|Level measurement – Pressure|
|Measurement range||0 to 500 cm|
|Zero point drift||max. 0.75 % of final value (0 – 50 °C)|
|Measurement uncertainty||standing medium: +/- 0.5 of final value|
|Measurement range||-20 °C to +60 °C|
|Measurement uncertainty||±0.5 K|
Specifications subject to change.
Technical Instruction for KDA Doppler sensors (pipe and wedge style)