Application

• Rectangular channel 0.5 x 0.6 m (w x h), made of concrete
• Partially filled
• Upgrading an existing Venturi flume with a measurement system

Definition of tasks

• Detection of wastewater treatment plant discharge using existing Venturi flume
• Output of flow volume to control system
• Output of volume-proportional m³-impulses for on-site counter

Solution

• A Q/h related ultrasonic volume measurement Type NivuMaster has been installed.
• In order to maintain the measuring uncertainty as low as possible, an ultrasonic sensor with a very low dead zone (Type P-M3, dead zone 0.07m) has been selected to detect impoundage level.
• All signals requested by the customer are transmitted from the transmitter to the control system and the on-site counter.
• The sensor has been installed above the Venturi flume by using a standard wall installation angle.