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| We need to build or buy economical submersible pressure transducers |
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| Gregg:
If you are going to have wires exiting the pressure vessel, why not use a thin tube with some sort of bladder or bellows on the end? It shouldn’t be too hard to attach an external pressure sensor, fill the system with a compatible liquid and have atmospheric pressure as the reference pressure. |
| DC1MC:
--- Quote from: Gregg on January 05, 2022, 11:32:16 pm ---If you are going to have wires exiting the pressure vessel, why not use a thin tube with some sort of bladder or bellows on the end? It shouldn’t be too hard to attach an external pressure sensor, fill the system with a compatible liquid and have atmospheric pressure as the reference pressure. --- End quote --- This may also work, but all in all it will put the price way over the target of 100USD. |
| Wallace Gasiewicz:
There are commercially available pressure and temp transducers used for fishing. Some of these are meant to goon the "cannonball" on an outrigger and are quite sturdy. Here is one: https://www.ebay.com/itm/353180164887?chn=ps&norover=1&mkevt=1&mkrid=711-213727-13078-0&mkcid=2&itemid=353180164887&targetid=4580702890871448&device=c&mktype=&googleloc=&poi=&campaignid=418640321&mkgroupid=1233652283797640&rlsatarget=pla-4580702890871448&abcId=9300602&merchantid=51291&msclkid=29e7f78baa4f1cfe8750965d8027da67 |
| DC1MC:
--- Quote from: Wallace Gasiewicz on January 05, 2022, 11:39:03 pm ---There are commercially available pressure and temp transducers used for fishing. Some of these are meant to goon the "cannonball" on an outrigger and are quite sturdy. Here is one: https://www.ebay.com/itm/353180164887?chn=ps&norover=1&mkevt=1&mkrid=711-213727-13078-0&mkcid=2&itemid=353180164887&targetid=4580702890871448&device=c&mktype=&googleloc=&poi=&campaignid=418640321&mkgroupid=1233652283797640&rlsatarget=pla-4580702890871448&abcId=9300602&merchantid=51291&msclkid=29e7f78baa4f1cfe8750965d8027da67 --- End quote --- "Range: 0 ~ 30 bar" A bit different from 0-200bar, don't you say ;D? |
| viper:
I will comb back through the responses. Thanks guys! I just wanted to update that I 'did' find what I would consider to be about what we are looking for, but to be right honest, the complete Ahole at Amphenol done killed that one! If he was hired to lose business, he is good at it! Zero help, doesn't know the product, won't find out, no sh*ts to give.... But if someone has seen something similar by another OEM, I'd like to take a look. But I do think that we might give these other off the shelf sensors another look at how to seal them. We did not want to mess with worthless plug terminations that we will have to pot anyway, but we might find another way. We torn down the sensors to solder them, but that is not practical for anything but R&D. |
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