ELSY Ltd. distributes level measuring sensors manufactured by NIVELCO www.nivelco.hu.
NIVELCO’s product range covers sensors and detectors for liquid level and bulk materials. Sensors are produced using different physical principles:
- Ultrasound and radar
- With a rotating vane
FLOW MEASUREMENT IN OPEN CHANNELS
Method of volume / flow measurement in an open channel is often used to measure the quantity of water or waste water in the industry. Flow is determined by measuring the level and calculating of the base amount of liquid flowing through a channel with a known shape and size. There is a strict mathematical relationship between the height of the water layer in flow through the opening and amount of fluid occurring in a unit of time. A level sensor is used to measure the height of the water layer and then it calculates the flow rate through the opening. Volume is calculated by integrating. All this is done by an intelligent sensor for level measurement.
Measurement of the level is carried out through the ultrasonic sensor. It is connected to a controller which is configured to obtain the measured and calculated data from the intelligent sensor. Measurement data is accumulated in two counters - "infinite", which can not be reset and the second, which allows to be reset. Data can be collected manually by reading the values from the display on the controller and / or via a serial RS485 interface with the controller or "HART-USB" modem connected to a computer. Communication distance is up to 1000 meters.
To perform the method in the channel or drain a screen (diaphragm) with a rectangular, triangular, trapezoidal or other shape of opening or Parshal channel is installed. This method attains the flow rate ranged from 0.002 to 5 cubic meters per second with an error not greater than ± 1%.
To implement the measurement system requires the following products from NIVELCO:
- Ultrasound transmitter
- Universal controller type MULTICONT http://www.nivelco.hu/site.php?upar=LIST_ALL_REF&lang=en&alk_ter=1
More on the method or more detailed information about the products and NIVELCO can be found on their website: http://www.nivelco.hu/site.php?upar=PRODUCT&pro_id=186347&lang=en.
Such systems are built in plants producing ceramic, cement, petrochemical products, water treatment plants and others.