Clamp On /Portable Ultrasonic Doppler Flow Meter transmit an acoustic signal into the flow stream at a specific frequency and hence find an application in treated waste water, raw water, slurries, sewage, viscous liquids, acid, pulp stock, food products, aerated water, cooling water etc. Chandak Instruments Pvt. Ltd manufactures Clamp On /Portable Ultrasonic Doppler Flow Meter. Chandak Instruments Pvt. Ltd also Manufactures various types of flow meters. The Clamp On /Portable Ultrasonic Doppler Flow Meter compares transmit and receive frequencies and computes the frequency shift. This Flow Meter is only used for liquids containing gas bubbles or particulates.