Reddit reviews Diymore Breakout Board MPXV7002DP Transducer APM2.5 APM2.52 Differential Pressure Sensor
We found 2 Reddit comments about Diymore Breakout Board MPXV7002DP Transducer APM2.5 APM2.52 Differential Pressure Sensor. Here are the top ones, ranked by their Reddit score.
The MPXV7002 is designed to measure positive and negative pressure.The MPXV7002 series piezoresistive transducer in the small outline package (SOP) is a state-of-the-art monolithic silicon pressure sensor designed for a wide range of applications.And particularly those employing a microcontroller or microprocessor with A/D inputs.This patented, single element transducer combines advanced micromachining techniques, thin-film metallization and bipolar processing which provide an accurate, high level analog output signal that is proportional to the applied pressure.In addition, with an offset specifically at 2.5V instead of the conventional 0V, this new series allows to measure pressure up to 7kPa through each port for pressure sensing but also for vacuum sensing (refer to the transfer function in the data sheet for more detailed information).
Have you looked at something like this?
https://smile.amazon.com/gp/product/B01MCVOZJO/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
I'm experimenting with one to detect the differential pressure on my septic air pump to have an alert if it stops
For flow, I'm using these two products:https://www.amazon.com/gp/product/B009PANQ8E/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1https://www.amazon.com/gp/product/B01MCVOZJO/ref=ppx_yo_dt_b_asin_title_o06_s01?ie=UTF8&psc=1And then working out velocity from the pressure differential using Bernoulli's equation. The sensor is a real pain to work with because it drifts and I have to filter a very weak analog signal. Like seriously, when the speed is at low, the pressure differential is so low the difference doesn't even register as a 1 on an arduino ADC pin. I have to multi-sample values between 1 and 0 to get a fractional value. I'll probably need a new sensor or to make my own pre-amp.
For filter restriction, I'm using the differential pressure sensor from above, and then just have it compare pre-filter pressure to post-filter pressure. I get my pre-filter pressure from the low-side of the pitot tube. And then I get my post-filter pressure from a hole drilled in the ductwork right after the filter. Luckily the pressure difference is much higher, so the values are more consistent. I then take the pascal values and convert them to water-column since that's what the unit's specs are based on. My filter does 0.4"wc when new, so I have it send me a notification if it reaches 0.75"wc. That's definitely high, but flow rate hasn't been affected too much.
<a href="https://imgur.com/WDchzDK"><img src="https://i.imgur.com/WDchzDK.png" title="source:imgur.com" /></a>(Wow. Reddit really does not like attempts at adding an image.)