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Fluid pressure sensor
Posted: 05 Dec 2023 09:49
by markchang
Hello,
I want to manage a fluid circuit controlling its pressure.
After some searches, I don’t find pressure sensors with z wave capabilities.
Anyone knows if they exist or is possible to build one easily?
Regards,
J
Re: Fluid pressure sensor
Posted: 07 Dec 2023 23:42
by lanbrown
Z-Uno 2 board with the appropriate sensor(s) and controls?
Re: Fluid pressure sensor
Posted: 08 Dec 2023 23:01
by markchang
I don’t find pressure sensor for fluids, this is the problem.
I know that it is possible to use a regular pressure sensor, know its calibration and then use resistance to use it as a pressure signal but… I want something made, plug and play in fluid line
Re: Fluid pressure sensor
Posted: 09 Dec 2023 10:17
by michap
You think about something like this?
https://www.aliexpress.com/i/33028576390.html
You can find it also in local stores...
The analog output you can connect to Z-Uno.
Michael
Re: Fluid pressure sensor
Posted: 19 Dec 2023 08:44
by markchang
Yes, something like that but made, I mean, sensor + plate plug and play
Re: Fluid pressure sensor
Posted: 19 Dec 2023 20:32
by lanbrown
That is a very limited use case. If a company did decide to make something like that, you wouldn't like the price because of the low volume means high price to sell at to recover their costs.
Re: Fluid pressure sensor
Posted: 20 Dec 2023 19:49
by michap
lanbrown wrote: ↑19 Dec 2023 20:32
That is a very limited use case.
Right.
I would take a Z-UnoG2 and this sensor and make it myself. It is really not hard to do.
The "hardest" work is to find/make/print a case for the sensor
Michael
Re: Fluid pressure sensor
Posted: 21 Dec 2023 23:24
by markchang
In ma case, The box designed and printed will not be The problem
I understand your arguments. Bad news for me
Re: Fluid pressure sensor
Posted: 22 Dec 2023 02:36
by lanbrown
The other advantage of the Z-Uno G2 is that it will support the latest Z-Wave specifications and down the road, if a new Z-Wave specification is released, you can port the sensor and most if not all of the code over to say a Z-Uno G3.
I would also think the limited use case for what you're looking for, support and firmware updates might be non-existent.
Re: Fluid pressure sensor
Posted: 03 Mar 2024 09:30
by Steve_Elves
Depending on the pressure range you wish to measure, there are a number of devices available that provide a 0.5V - 4.5 VDC analog signal for water pressure. I found a couple from DigiKey: a) Seeed Technology part number 1597-1515-ND for about $20 CDN that will measure 0-1200 kPa, and b) Honeywell Sensor part number MIPAN2XX100PSAAX for about $110 that will measure 0-2400 kPa. I'm using a similar one to monitor the pressure from my well water system; it's totally reliable. I was able to write a small sketch that reports the pressure every couple of minutes - dead easy. The Z-Uno can measure an analog input in that voltage range with no difficulty. Took a bit of fiddling to calibrate properly against a verified gauge, but has been rock steady since.
I first tried a cheapo sensor from Aliexpress in China. Was advertised that it would measure water pressure, but the sensing element wasn't waterproof and it corroded and failed within a couple of weeks. Would be useful for petrol or oil, I guess, but not for water. Buy a better one from a reputable dealer.