Airspeed/Pressure Differential Sensing
Posted: Wed Feb 13, 2019 1:36 pm
I am considering adding an integrated pressure sensor suite to my data collection. I say suite, as I will want to take differential pressure readings at several locations at once. The sensors I am considering are of the MPXV5004G series piezoresistive transducer family.
download/file.php?id=98
1. Power supply - The DL-1 Club has 2 @ 5v outputs. Should I use these - or best to add an external step down regulator to supply these devices?
download/file.php?id=99
2. The analog versions are susceptible to a lot of noise. But they are simple 3 wire connections, +5v, GND, Sig. The digital are much cleaner but are 4 pins; +5v, GND, SCL, SLA. My question regarding a 4 pin connection - can I just not connect the SCL (serial clock - timing) and let the DL-1 sort it out - or is there some recommended means to connect a 4 pin sensor? I find 1, 2, and 3 in the Knowledge Base, but not 4 pins. Is this possible?
Thanks.
Cheers - Jim
As an aside, I also have 2 brake pressure sensors similar to these
download/file.php?id=100
They are 3 wire so no problems there - but the same power supply question.
Working Voltage: 5VDC
Output Voltage: 0.5-4.5 VDC
Sensor material: Carbon steel alloy
Working Current: <=10 mA
download/file.php?id=98
1. Power supply - The DL-1 Club has 2 @ 5v outputs. Should I use these - or best to add an external step down regulator to supply these devices?
download/file.php?id=99
2. The analog versions are susceptible to a lot of noise. But they are simple 3 wire connections, +5v, GND, Sig. The digital are much cleaner but are 4 pins; +5v, GND, SCL, SLA. My question regarding a 4 pin connection - can I just not connect the SCL (serial clock - timing) and let the DL-1 sort it out - or is there some recommended means to connect a 4 pin sensor? I find 1, 2, and 3 in the Knowledge Base, but not 4 pins. Is this possible?
Thanks.
Cheers - Jim
As an aside, I also have 2 brake pressure sensors similar to these
download/file.php?id=100
They are 3 wire so no problems there - but the same power supply question.
Working Voltage: 5VDC
Output Voltage: 0.5-4.5 VDC
Sensor material: Carbon steel alloy
Working Current: <=10 mA