Hi,
I need to detect changes in air flow in a tubing. The actual magnitude of the air flow is not important, only changes from high to low air flow matters.
A hot wire anemometer would fits best, as it is small and can easily be inserted in the circuit, as a differential pressure sensor cannot.
I try to connect this flow sensor (https://www.bb-sensors.download/en/_files/ugd/bacb25_d15e12a2b57b4b7cad575eb9d26a3e08.pdf). Can you help me with the hardware setup? Thank you.
What sort of help do you need?
You just need to wire it up like the example circuit at the end of that link.
Hi, @fvmeul0
Can you please tell us your electronics, programming, arduino, hardware experience?
Example Circuit;
You need to setup a circuit around the sensor to provide the heater current and the response signal.
Tom.. 
Measure the voltage output in-situ with your real setup.
Then you’ll know the actual voltage range for your installed project.
Use a simple voltage divider to scale the actual output for your analog input (use the actual wire lengths), then you’re well on the way.
I’d allow 5% margin at the high and low ends for any exceptional excursions.
This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.
