lolachampcar
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Has anyone interfaced to a high pressure/high flow rate sine wave output flow transducer like those typically found on larger turbines? If so, howdidyadoit?
"Sine Wave" output fuel flow sensor integration
- Thread starter lolachampcar
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lolachampcar
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Update
Apparently there is a type of flow meter which uses a RF coil to detect blade passings. This type allows for more accuracy and greater flow range as there is no magnetic drag from the "clocking" that occurs when you use a hall effect sensor (and a magnet to generate the field).
These RF sensors are excited by a circuit (at 50 KHz for the ones I am looking at) and the outputs range from 0-20 ma through open collector and logic level pulses.
Still working on this one. Anyone with experience please chime in.
Bill
Apparently there is a type of flow meter which uses a RF coil to detect blade passings. This type allows for more accuracy and greater flow range as there is no magnetic drag from the "clocking" that occurs when you use a hall effect sensor (and a magnet to generate the field).
These RF sensors are excited by a circuit (at 50 KHz for the ones I am looking at) and the outputs range from 0-20 ma through open collector and logic level pulses.
Still working on this one. Anyone with experience please chime in.
Bill
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- Mar 23, 2005
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As an FYI, the fuel flow senders we sell use optical detection, so the magnetic drag/clocking he describes is not an issue. Bill is integrating with a turbine engine.
Bill, the EI FT-180 handles over 250GPH, and easily integrates with SkyView. Any reason you can't use that?
Bill, the EI FT-180 handles over 250GPH, and easily integrates with SkyView. Any reason you can't use that?
lolachampcar
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Likely Rockwell of operator's head 
I'll likely go that way but really want to educate myself on these sensors first.
I'll likely go that way but really want to educate myself on these sensors first.
Bill, as this is an experimental application, there are many non-aircraft related mass flow meter options you also might be interested in. There are at least a dozen or more different sensing methodologies used in liquid handling industries. Ones I have used in the past are electromagnetic flow sensors and coriolis flow meters. There are no moving parts and are generally made of 316L stainless (very corrosion resistant). They generally use a 4-20 ma output (allows long signal wire length), but this can be converted to voltage (to interface with Dynon) with a conversion resistor. Very accurate and millisecond response. Downside is a $1500 - $2000 price tag for the flow range seen with aircraft. But, if you like to tinker, there are lots of options.