Doppler - Small Channels
Doppler flowmeters for the accurate measurement of flows in small channels and streams.
The ISCO 2150 Area velocity module is ideal for portable flow surveys and permanent installations.
It uses continuous wave Doppler technology to measure mean velocity. The sensor transmits a continuous ultrasonic wave, then measures the frequency shift of returned echoes reflected by air bub...
The 2150EX Area velocity flow meter is intrinsically safe and is specifically designed for use in Zone 0 and Zone 1 potentially explosive atmospheres under ATEX Directive 94/9/EC.
The 4120 Flow Logger uses a differential pressure transducer to measure level, and uses built in level-to-flow conversions to calculate flow. The pressure transducer technology can measure flow accurately at sites where wind, turbulence, steam, foam or air temperature fluctuations exist, and the ...
The 4150 flow logger allows area velocity to be measured without the need for a flume or weir. The 4150 sensor uses patented Doppler technology to directly measure average velocity in the flow stream. The integral pressure transducer measures liquid depth to determine flow area. The flow rate is ...
The 4210 Ultrasonic Flow Meter is designed to provide flow measurement in a flume or over a weir, with automatic compensation for changes in atmospheric pressure to ensure accuracy.
The Isco 4220 Flow Logger measures depth using a differential pressure transducer. The venting system compensates for atmospheric pressure changes automatically and can measure pressure acurately even when covered with sand or silt
The 4230 Bubbler Flow Meter uses a bubble line submerged in the flow channel through which an internal air compressor forces a metered amount of air. By measuring the pressure required to force air bubbles out of the line (which is proportional to flow) flow rates can be determined accurately.
The 4250 Flow Meter's sensor directly measures average velocity in a flow stream with patented doppler technology. This system eliminates the profiling and calibration required by electromagnetic systems by continuously profiling the flow stream.
The ADFM Pro 20 is the ideal meter for measurement in large pipes and open channels. The meter offers flow rate data within 2% of actual value, in flow depths of up 20 feet (6 m).
The ISCO 4110 Flow Logger measures flow over weirs or in flumes via a non-contact ultrasonic sensor mounted above the flow. The sensor transmits a pulse of sound which is reflected by the surface of the liquid.
Low Flow Conditions - Low Profile Area Velocity Monitoring