Open Channel Ultrasonic Flowmeter

Open channel flowmeters measure the parameters of surface, discharge and total volume of water flowing from spillways, flumes and open channels. These flowmeters are devices that measure instantaneous and total discharge with high accuracy without contact with the fluid. These devices are classified into two categories according to the type of structure available: Parshal Flume or Weir. These devices are used in places to measure wastewater flows, infiltration studies, finding the discharge of water from dams and canals in the irrigation and agricultural industries and similar cases. In this system, by using standard formulas used for open channels, instantaneous discharge can be calculated. FLT94 series ultrasonic flowmeters receive information from UCS3 series ultrasonic level meter via RS485 port of sensor and calculate the instantaneous flow rate of fluid passing through the channel by using the coefficients defined for it (depending on the type and dimensions of the channel). Instantaneous information related to fluid level, flow rate, flow volume, ambient temperature and total daily flow rates can be viewed on the device's graphic display and the flow rate and fluid level can be controlled using its standard outputs such as 4-20mA, Relay, NPN switch, Digital and RS485. Applications and Features Continuous and non-contact measurement of the level and flow of fluid and paste materials inside open channels, partial, venturi, weirs and rectangular and trapezoidal open channels Control of the flow rate of open channels by using standard outputs of the device Hygienicly suitable for edible fluids Measuring range up to 15 meters depending on the ultrasonic sensor and the measured materials Detection of level limits Control of level and flow by commanding the pump or solenoid valve (using an internal relay or continuously with 4-20mA outputs) Minimal need for maintenance due to the non-contact nature of the method Internal temperature sensor for automatic correction of sound speed and accurate distance measurement Ability to assign each of the information of full and empty level, flow rate, volume, temperature, etc. to each of the transmitter outputs such as 4-20mA and relays Ability to store daily total flow rate information up to 30 days Ease of setting up menus, inputs and outputs for the user Calculation, conversion and display of different units such as meters, kilograms, meters Cubes, liters per second, cubic meters per hour and percentage of material inside the channel. Setting sensor parameters such as sampling distance, number of pulses sent, transmitting power and also setting coefficients related to the channel.