Discharge - Ott ADC

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Parameter to be measured:

Flow velocity (, discharge)

Method:

ultrasonic reflectogram cross-correlation

Equipment:

probe
display unit
wading rod

Advantages:

on-site discharge computation
powerful quality checking, configuration and data storage options
integrated depth measurement and sensor positioning indicator
convenient software with visualisation capabilities
USB (no serial port required)
rechargable via USB

Disadvantages:

heavy rods with coarse scale
test device showed signs of rainwater entering the display
built-in batteries, cannot be changed by user

What to watch out for:

turbulent flow can cause the device to reject the measurements. Newer versions of the firmware provide (apart form additional quality check features) options to control that - look for new versions on the OTT-website
back pain (when adjusting depth of the probe free-hanging) - use sliding rod or makeshift additional support for holding the rod
the wall charger seems to use more than 12 V put on a standard mini-USB plug - rather don't try to charge standard devices with that power supply!

Links

Discharge - comparison of measurements (C2, Flowtracker, Flowsens, ADC, tracer, dipping rod)

Other related web sites:

Projects that used the above equipment: -

References

http://www.ott-hydrometry.de/web/ott_de.nsf/id/pa_adc_e.html