Hi All,
I'm looking for an accurate pression sensor which will be able to mesure up to 100m depth ( 11 bars ) .
Would anyone have a reliable reference to share with me ? I found some but they do not really looks "reliable".
Thanks for any ref or any insights on this !
You are starting a steady stream of responses to your request because you will reject most of what people suggest. Please list those pressure sensors you have already eliminated as not being "reliable".
HI Paul,
Sure, for example, I mean reliable by this one : https://bluerobotics.com/store/sensors-sonars-cameras/sensors/bar30-sensor-r1/ ( which sounds very good but over qualified and ..so .. over priced )
Non reliable are the ones on Ali-express & co, around 10 euros or less.
This sensor will provide life security related information, so I need something "solid"
What I'm looking for is for sensor some of forumers have tested and validated
So no 10eur AE sensor, neither 80eur bluerobotics. So what exactly?
Plan on spending USD 100+.
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In fact the way I presented it was not so good, as I qualify "the quality" by the price.
but I wanted to avoid the usual " I want something top as cheapest as possible". At the end ,this is of course my search, looking for some potential "challengers" on the market who do not benefit of their names and apply high prices
But, yet you are asking on an Arduino forum that is for hobby, people wanting to learn and experimenting. Nothing relating to an Arduino is associated with "life security".
It works this way. There are cheap pressure sensors but there are no quality, reliable, cheap sensors. You want an eleven bar (about 160 psi) sensor which for a quality, name brand, pressure you can expect to pay, as mentioned, at least $100 USD for. There are good sensors and there are cheap hobby sensors but there are no good cheap sensors. You make no mention of what output your sensor should have? Look to names like Omega, Honeywell and other quality names. Good luck.
Ron
Most of the sensors I looked at on AE were as expensive as the American parts. Very few 10EU.
Some people don;t know how AliExpress works. The one factory that makes widget #4 sell most to the Americas, then EU. At night people line up at the back door to get a case or two for factory direct prices and sell them on AE. Identical finction, identical quality since there is only one factory. I have bought many products from AE and have never encountered fake or even DOA products. Shipping can be long, and occasionally the small parcels go missing, but I use the reporting link on AE and get a refund very quickly. Most of the devices I looked at were NOT cheap even on AE.
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Hello dear, we are a pressure sensor manufacturer from China with 20 years of experience and can provide high quality pressure sensors.
Can you provide some other information such as sensor output signal,
Mod edit, personal contact information removed, please reply in the forum.
I've allowed the reply by @pressure_sensor because it's directly relevant to the OP's question.
OTAY, just seemed awkward but yes, I guess it does and thank you. 
Ron
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Thanks !
Hi Will send you an MP
HI, for now, the output signal is not defined yet. We would like to use most likely I2c , which seems the best option identified.
This sensor will be connected through a USB/I2C and signal handled directly.
[
81MA手册压缩Jack文件.pdf
](81MA手册压缩Jack文件.pdf - Google Drive)
Hello, please check the detailed product information
Lmo92 via Arduino Forum <notifications@arduino.discoursemail.com>于2024年12月21日 周六00:42写道：
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I hope you don't think to have 100m USB/I2C wiring...
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Hi , no, it will be inside a box, less than 5cm 
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Thank you!