Application

• Concrete pipe DN 1200
• Partially filled
• Levels temporarily tending to zero
• No power supply available
• Ex Zone 1

Definition of tasks

• Temporary installation of a flow measurement system to investigate precipitation discharge and channel capacity utilisation
• Reliable detection of lowest levels during the night
• Automatic data transmission and error messages/remote maintenance via GPRS

Solution

• The portable flow measurement system PCM Pro with an Ex-proof GPRS data logger Type NivuLog Ex have been used.
• The built-in pressure measurement cell of the flow velocity sensor allows to detect the channel overflow.
• Using an additional air-ultrasonic sensor (LUS) ensures reliable measuring of even lowest discharge during the night.
• Highly efficient data compression as well as the particular transmission behaviour guarantee reliable data transmission despite mas­sive channel walls and metal manhole covers.
• The NIVUS "Device to Web" data portal allows direct access to the measurement system as well as to the connected sensors.